®

QRD NFPA Series

PA

Instruction Manual

This manual contains important safety information and must be

carefully read in its entirety and understood prior to installation by
all personnel who install, operate and/or maintain this product.

Manual No. 50328-100

November 2007 Edition

 Contents
SECTION 1 SAFETY
Safety First .......................................................................................................................................................... 3

SECTION 2 SYSTEM DYNAMICS

Description & Application .................................................................................................................................. 6
Compression Cycle .............................................................................................................................................. 6
Lubrication Systems ........................................................................................................................................... 6
Cooling Systems .................................................................................................................................................. 6
System Components ........................................................................................................................................... 6
Control Components ......................................................................................................................................... 10
Control Description ........................................................................................................................................... 10
Specifications .................................................................................................................................................... 12

SECTION 3 INSTALLATION
Receiving Delivery ............................................................................................................................................ 14
Freight Damage ................................................................................................................................................ 14
Location ............................................................................................................................................................. 15
Mounting ........................................................................................................................................................... 16
Pipe Installation ................................................................................................................................................ 16
Induction System .............................................................................................................................................. 16
Compressed Air Discharge System .................................................................................................................. 17
Electrical Supply Requirements ....................................................................................................................... 18

SECTION 4 START-UP & OPERATION

Pre-Starting Checklist ...................................................................................................................................... 20
Initial Starting & Operating ............................................................................................................................ 21
Important Operating Instructions ................................................................................................................... 21
Daily Checklist .................................................................................................................................................. 22

SECTION 5 MAINTENANCE
Stopping for Maintenance ................................................................................................................................ 23
Maintenance Schedule ...................................................................................................................................... 23
Pulley / Sheave Alignment & Belt Tension ...................................................................................................... 24
Pressure Switch Adjustment ............................................................................................................................ 25
Torquing Head To Cylinder Bolts .................................................................................................................... 26

SECTION 6 TROUBLESHOOTING
Troubleshooting ................................................................................................................................................ 27

SECTION 7 REFERENCE INFORMATION

Approximate Capacity Correction for Altitude ................................................................................................ 30
Decal Locations ................................................................................................................................................. 31

QRD (NFPA) Series Quincy Compressor

50328-100, November 2007 1 3501 Wismann Lane, Quincy IL - 62305-3116
 WARRANTY
QUINCY COMPRESSOR DIVISION RECIPROCATING PRODUCTS
QRD (NFPA) SERIES AIR COMPRESSORS

GENERAL PROVISIONS
Quincy Compressor (“The Seller”) warrants to each original retail purchaser (“Purchaser”) products of the Seller’s own manufacture
against defects in material and workmanship.
With respect to products not manufactured by Seller, Seller will, if practical, pass along the warranty of the original manufacturer.
Seller warrants repaired or replaced parts of its own manufacture against defects in material and workmanship under normal use
and service for ninety (90) days, or for the remainder of the warranty on the basic compressor being repaired, whichever is longer.
All warranty travel expense will be paid to the nearest authorized repair center.
The Seller’s sole obligation under this warranty shall be at its option, to repair or replace any product or part thereof which is deemed
to be defective, provided the Purchaser meets the requirements of this warranty and none of the limitations apply.

WARRANTY PERIODS
The seller warrants the basic compressor of a factory built compressor package for a period of (36) thirty-six months or 10,000 hours,
whichever comes first, from start-up, or (42) forty-two months from factory shipment, whichever comes first. The remainder of the
compressor package is warranted for (1) one year from start-up or (18) eighteen months from factory ship date, whichever comes
first. Stand alone basic compressors sold by Seller have a 1 year or 3,000 hour warranty.

Limitations
The (36) thirty-six month or 10,000 hour warranty on the basic compressor applies only to Quincy factory packages. The (36) thirty-
six month or 10,000 hour warranty is limited to 100 p.s.i. maximum. Operation at 125 p.s.i. is limited to (36) months, or 8,000 hours.
High temperature probes in each head must be functional on all models.
The hour meter supplied with factory units must be operational at initial start-up.
Specified maintenance must be adhered to or the warranty may be null and void.
Normal maintenance items and procedures are not warranted unless found to be defective in material or workmanship i.e. but not
limited to, filters, gaskets, rings, and valves.
Notice of the alleged defect must be given to Seller in writing with all identifying details, including: serial number, model number,
type of equipment and date of purchase within thirty (30) days of discovery of same.
If requested by Seller, such product or product thereof must be promptly returned to Seller, freight collect for inspection.
The Seller must have the warranty registration card on file at Quincy, Il. within ten (10) days of start-up or the warranty may be
declared null and void.
The above warranties shall not apply and Seller shall not be responsible nor liable for:
(a) Consequential, collateral or special losses or damages.
(b) Equipment conditions caused by fair wear and tear, abnormal conditions, accident, neglect or misuse of equipment,
improper storage or damages resulting during shipment.
(c) Deviation from operating instructions, specifications or other terms of sales.
(d) Labor charges, loss or damage resulting from improper operation, maintenance or repairs made by person(s) other than
Seller or Seller’s authorized service station.
(e) Improper application or installation of product.

In no event shall Seller be liable for any claims, whether arising from breach of contract or warranty of claims of negligence or
negligent manufacture, in excess of the purchase price.
This warranty is the sole warranty of Seller and any other warranties, express, implied in law or implied in fact, including any
warranties of merchantability and fitness for particular use, are hereby specifically excluded.

QRD (NFPA) Series Quincy Compressor

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SECTION 1 SAFETY
Safety First
At Quincy Compressor safety is not only a primary concern, but a faithfully
performed practice. Beginning with the design stage, safety is built into “The
World’s Finest Compressor”. It is the intention of this manual to pass along the
“safety first” concept to you by providing safety precautions throughout its
pages.

“DANGER !”, “WARNING !”, and “CAUTION !” are displayed in large

bold capital letters in the left hand column to call attention to areas of vital
concern. They represent different degrees of hazard seriousness, as stated
below. The safety precaution is spelled out in bold upper and lower case letters
in the right hand column.

Immediate hazards which will result in severe personal injury or

DANGER ! death.

Hazards or unsafe practices that could result in personal injury or

WARNING ! death.

Hazards or unsafe practices which could result in minor personal

CAUTION ! injury, product or property damage.

Each section of this instruction manual, as well as any instructions supplied

by manufacturers of supporting equipment, should be read and understood
prior to starting the compressor. If there are any questions regarding any part
of the instructions, please call your local Quincy Compressor Distributor, or the
Quincy Compressor factory before creating a potentially hazardous situation.
Life, limb, or equipment could be saved with a simple phone call.

Compressors are precision high speed mechanical equipment requiring

caution in operation to minimize hazard to property and personnel. There are
many obvious safety rules that must be observed in the operation of this type
of equipment. Listed below are some additional safety precautions that must
be observed.

•Transfer of toxic, dangerous, flammable or explosive substances using Quincy

Compressor products is at the user’s risk.

•Turn off and lockout/tagout (per OSHA regulation 1910.147) the main power
disconnect switch before attempting to perform maintenance on any part of the
unit.

•Do not attempt to service any part of the unit while it is operating.

•Per OSHA regulation 1910.147, relieve the system of all pressure before
attempting to service any part of the unit.

•Do not operate the unit with any of its safety guards, shields, or screens
removed.

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 •Relieve pressure from any isolated component being serviced.

•Allow ample time for the compressor to cool before performing service
procedures. Some surface temperatures exceed 350°F when the compressor is
operating.

•Do not remove or paint over any DANGER!, WARNING!, CAUTION!, or

instructional materials attached to the compressor. Lack of information
regarding hazardous conditions can cause property damage or personal injury.

•Periodically check all pressure relief valves for proper operation.

•Do not change the pressure setting of the pressure relief valve, restrict the
function of the pressure relief valve, or replace the pressure relief valve with
a plug.

•Do not install a shutoff valve in the compressor discharge line without first
installing a pressure relief valve of proper size and design between the shutoff
valve and the compressor.

•Do not use plastic pipe, rubber hose, or lead-tin soldered joints in any part of
the compressed air system.

•Alterations must not be made to this compressor without Quincy Compressor’s

approval.

•Be sure that all tools, shipping and installation debris have been removed
from the compressor and installation site prior to starting the compressor.

•Do not operate the compressor in excess of the ASME pressure vessel rating
for the receiver or the service rating of the compressor, whichever is lower.

•Make a general overall inspection of the unit daily and correct any unsafe
situations. All fasteners and fittings must be kept tight.

•Reckless behavior of any kind involving compressed air is dangerous and can
cause very serious injury to the participants.

•Provisions should be made to have the instruction manual readily available

to the operator and maintenance personnel. If for any reason any part of the
manual becomes illegible or the manual is lost, have it replaced immediately.
The instruction manual should be read periodically to refresh one’s memory.
It may prevent a serious or fatal accident.

•Never use a flammable or toxic solvent for cleaning the air filter or any parts.

Air used for breathing or food processing must meet OSHA 29 CFR
DANGER ! 1910.134 or FDA 21 CFR 178.3570 or NFPA 99 regulations. Failure to
do so may cause severe injury or death.

The owner, lessor or operator of any compressor unit manufactured by

Quincy Compressor is hereby warned that failure to observe the safety
precautions and procedures outlined in this manual may result in serious

QRD (NFPA) Series Quincy Compressor

50328-100, November 2007 4 3501 Wismann Lane, Quincy IL - 62305-3116
 personal injury, damage to property, and may void your warranty. Quincy
Compressor must authorize all warranty service. Before contacting your
distributor or the factory, check the maintenance requirements and the
troubleshooting guide for your compressor. Most warranty issues can be
resolved by following proper maintenance procedures.

Quincy Compressor neither states as fact, nor in any way implies that the
above list of safety precautions is an all inclusive list, the observance of which
will prevent all damage to property or injury to personnel.

Every effort has been taken to ensure that complete and correct instructions
have been included in this manual. However, possible product updates and
changes may have occurred since this printing. Quincy Compressor reserves
the right to change specifications without incurring any obligation for equip-
ment previously or subsequently sold.

QRD (NFPA) Series Quincy Compressor

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SECTION 2 SYSTEM DYNAMICS
Description & Application
The Quincy QMS Compressed Air Medical System consists of an MQRDS
compressor module and an MATC Medical Air Treatment and Control Module.
MQRDS compressor modules are available in duplex, triplex and quadraplex
configurations The complete system is designed and tested to comply with
NFPA 99 requirements.

The QRDS compressor consists of a heavy duty, belt driven, single stage air
cooled compressor designed to provide clean air for hospitals and medical
institutes. It is capable of delivering up to 100 PSIG continuously.

The MATC Medical Air Treatment and Control Module consists of a NEMA
12 control panel, UL and CUL approved control devices, dryers, a coded air
receiver suitable for NFPA 99 applications, and a dew point and CO monitor.

Compression Cycle
Single Stage Compressors
During the downstroke of a single stage compressor, air is drawn through an
intake valve in the head of the compressor and into the cylinder. At the bottom
of the stroke, the intake valve closes and air is trapped in the cylinder. The air
is then compressed in the cylinder during the upstroke of the piston. Total
compression, from atmospheric pressure to the final discharge pressure, is
accomplished in one stroke of the piston.

Lubrication Systems
No lubrication is required for the pistons and cylinders. PTFE® composite
compression rings provide sealing and PTFE® composite rider rings carry the
thrust loads. The wrist pin needle bearings are grease lubricated and require
maintenance (Refer to SECTION 5, Maintenance Schedule). All bearings
on the crankshaft are sealed and lubricated for the life of the bearing.

Cooling Systems
Fan blades of the compressor sheave force ambient air across fins of a discharge
manifold and the cylinder heads to cool the compressor. QRDS series compres-
sors are normally set up at the factory with a sheave that turns in a counter-
clockwise rotation (refer to directional arrow on sheave). The compressor
should be operated in temperatures under 104°F.

System Components
Efficiency and safety are the primary concerns when selecting components for
compressed air systems. Products of inferior quality can not only hinder
performance of the unit, but could cause system failures that result in bodily
harm or even death. Select only top quality components for your system. Call
your local Quincy Distributor for quality parts and professional advice.

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 Drive Pulleys / Sheaves
Drive pulleys & compressor sheaves must be properly aligned and drive belt
tension set to specifications (refer to SECTION 5, Pulley / Sheave Align-
ment & Belt Tension). Improper pulley/sheave alignment and belt tension
can cause motor overloading, excessive vibration, and premature belt and/or
bearing failure.

Excessive compressor RPM’s (speed) could cause a pulley or sheave

to shatter. In an instant, the pulley or sheave could separate into
WARNING ! fragments capable of penetrating the belt guard and causing bodily
harm or death. Do not operate the compressor above the recom-
mended RPM (refer to SECTION 2, Specifications).

Pressure Vessels
Air receiver tanks must be in accordance with ASME Boiler and Pressure
Vessel Code Section VIII and ANSI B19.3 safety standards. They must be
equipped with a pressure relief valve, pressure gauge, condensate drain valve,
& manual shutoff valve.

ASME coded pressure vessels must not be modified, welded, re-

paired, reworked or subjected to operating conditions outside the
DANGER ! nameplate ratings. Such actions will negate code status, affect
insurance status and may cause property damage, severe injury or
even death.

A condensate drain valve should be located in the bottom of the air receiver
to allow for moisture drainage. Extend piping away from the unit to provide
safe and convenient removal of excess moisture. An automatic condensate
drain valve is recommended.

If the air receiver is going to be subject to temperatures of 32°F or below,

provisions must be made to guard against freezing of the pressure relief valves,
pressure gauge, check valve, and condensate drain valve.

Guards
The QRDS basic compressor is equipped with a high air flow fan built into the
compressor sheave capable of creating air flow of 5400 CFM at maximum
speed. This and all mechanical action or motion is hazardous in varying
degrees and needs to be guarded. Guards must be designed to achieve the
required degree of protection and still allow full air flow from the compressor
sheave across the unit. Any restriction of the fan air flow will cause higher
operating temperatures and reduce the service life of the compressor. Guards
must be in compliance with OSHA safety and health standards 29 CFR
1910.219 in OSHA manual 2206 and any state or local codes.

Guards must be fastened in place before starting the compressor

WARNING ! and never removed before shutting off and locking out the main
power supply.

QRD (NFPA) Series Quincy Compressor

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 Dryers & Filters
Moisture occurs naturally in air lines as a result of compression. Moisture
vapor in ambient air is concentrated when pressurized and condenses when
cooled in downstream air piping. Compressed air dryers reduce the moisture
vapor concentration and prevent water formation in compressed air lines.
Dryers are a recommended companion to filters, aftercoolers, and automatic
drains for improving the productivity of compressed air systems.

Water and moisture vapor removal increases the efficiency of air operated
equipment, reduces contamination and rusting, increases the service life of
pneumatic equipment and tools, and prevents air line freeze-ups.

Refrigerated compressed air dryers and regenerative desiccant dryers are

available, and meet NFPA 99 requirements. Each system is connected with
bypass capability.

Refrigerated compressed air dryers are noncycling, direct expansion type,

using R134a refrigerant, CFC free. The dryer is self-regulating for large load
swings. Heat exchangers are of copper tube construction and insulated.

Regenerative desiccant dryers consist of dual towers filled with desiccant

material and work on the adsorption principle. Water vapor is attracted from
the compressed air by the desiccant material and trapped, changing the
relative humidity of the compressed air. While the desiccant in one tower is
adsorbing water vapor, the desiccant in the other tower is being dried.

Check Valves
Check valves are designed to prevent back-flow of air pressure in the com-
pressed air system (air flows freely in one direction only). The check valve must
be properly sized for air flow and temperature. Do not rely upon a check
valve to isolate a compressor from a pressurized tank or compressed
air delivery system during maintenance procedures!

Manual Shutoff Valves

Manual shutoff valves block the flow of air pressure in either direction. This
type of valve can be used to isolate a compressor from a pressurized system,
provided the system is equipped with a pressure relief valve capable of being
manually released. The pressure relief valve should be installed between the
manual shutoff valve and the compressor (refer to Fig. 3-2, Typical Drop Leg
& Component Location).

Pressure Relief Valves

Pressure relief valves aid in preventing system failures by relieving system
pressure when compressed air reaches a determined level. They are available
in various pressure settings to accommodate a range of applications. Pressure
relief valves are preset by the manufacturer and under no circumstances
should the setting be changed by anyone other than the manufacturer.

Pressure relief valves are designed to protect compressed air

systems in accordance with ASME B19 safety standards. Failure to
DANGER ! provide properly sized pressure relief valves may cause property
damage, severe personal injury or even death.

QRD (NFPA) Series Quincy Compressor

50328-100, November 2007 8 3501 Wismann Lane, Quincy IL - 62305-3116
 Do not use plastic pipe, rubber hose, or lead-tin soldered joints in
WARNING ! any part of the compressed air system.

Control Panel
The NEMA 12 (UL & CUL approved) control panel is provided in duplex,
triplex or quadraplex configurations and meets NFPA 99 requirements for
medical air. Primary voltage is protected by fusing or circuit breaker. Control
transformer power is 115 volts and protected by secondary fusing. Pressure
control switches signal the compressors on/off cycle and signal lag compressor(s)
to come on if air demand increases. A lag pressure switch signals with a light
and audible alarm warning if the compressor is required to maintain system
pressure. An acknowledge button is provided for start condition and mainte-
nance. The alternator cycles each compressor to maintain equal run time. The
interior of the control panel is accessible through the door. The panel discon-
nect switches must be in the off position to access the panel interior.

CO / Dew Point Monitor

The CO / dew point monitor is a carbon monoxide (CO) and dew point detection
instrument that monitors compressed air from medical air supply systems. It
operates from a 115 VAC power supply and is microprocessor controlled.

The power cord of the CO / dew point monitor is wired at the factory directly
to the control panel when the monitor is mounted on the same skid as the
control panel. When the monitor is mounted on a separate skid from the control
panel, a single 115 VAC outlet is provided for the monitor to plug into. The
customer is responsible for providing properly sized wire and conduit to
connect the 115 VAC outlet to a Quincy Compressor NFPA control panel, or to
a separate 115 VAC power supply. Recommended minimum wire size is 14
AWG copper in 1/2” conduit.

CO / Dew Point Monitor Alarm

The CO / dew point monitor is equipped with an alarm that warns users of a
presence of carbon monoxide and / or high dew point. Alarm points are factory
set at 10 PPM of CO and 39°F of dew point (@ 55 PSIG).

Air Cooled Aftercooler

Aftercoolers are sized to provide an approach of 20°F to the dryers available.
They are constructed of copper tubing and headers for rugged construction.

Medical Filter System

The medical filter system consists of a duplex series of filters and pressure
regulators. Air enters the system and is directed to either bank of filters
(controlled by ball valve). The particulate stage filter (if required) removes
solids and liquid particles. The next filter removes submicronic particles and
aerosols. The third and final filter is carbon activated to remove unpleasant
odors. Maximum operating temperature is 125°F and maximum pressure is
125 PSIG.

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 Control Components
Head Unloader
Pneumatic control device designed to allow the compressor to run continuously
without compressing air until there is a demand for more compressed air.

Solenoid Valve
Used in conjunction with head unloaders when the compressor is to run
continuously and an operating pressure range is to be maintained.

Pressure Switch
The pressure switch detects the demand for compressed air and allows the unit
to start or load. When the demand is satisfied, the unit stops or unloads.

Control Description
Continuous run or load/unload operation, (see Fig. 2-1, Typical Control
Schematic) allows the compressor to run continuously, with the unit loading
and unloading in response to the pressure system. This control version
provides for selection of the desired mode of operation.

Electrical Control Operation

A wiring diagram is provided with all QRDS units and can be found inside the
control panel.

WP1768G
Fig. 2-1 Typical Control Schematic
(continuous operation; duplex models only)

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 Switches
“ON/START” : This push button starts the compressor. It must be depressed
after high air temperature (HAT) shutdown.

“OFF/STOP” : Stops the motor but does not unload the receiver. Do not
service the unit unless the control is off and the power is disconnected
and locked out!

“CONTINUOUS/HAND” : Will operate the motor continuously. The unit will

load and unload in response to system pressure.

“AUTO/START-STOP” : Provides unattended start/stop operation. The unit

will start automatically, load, and stop in response to the automatic controls.

Indicators
“POWER” : Indicates AC power is present inside the control panel. Do not
open the panel door or service the unit until power is disconnected
and locked out!

“ALARMS” : Indicates high air temperature, power outage, or other shutdown

has occurred. Allow the unit to cool and correct the problem before restarting
the unit.

“HOURMETER” : Hourmeters are supplied as standard equipment on every

MATC module and provides a method of recording the number of hours elapsed
since the last service interval.

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 Specifications
QRDS Single Stage Single Cylinder Basic Compressors

Model HP No. of Bore & Stroke RPM *Piston Displacement

Cylinders (inches) Range Cubic Ft. per Rev.

QRDS-2 2 1 4.000 x 2.000 400-1060 .01454

QRDS-3 3 1 4.750 x 2.000 400-1060 .02051
QRDS-5 5 1 5.250 x 2.000 400-1060 .02506

·Allowable Ambient Temperature Range +32° F to 104° F

·Inlet Connections 1 npt (female)
·Discharge Manifold Connections 1 npt (female)
·Bare Compressor Weight 120 lbs.
·Compressor with Flywheel 155 lbs.

QRDS Single Stage Two Cylinder Basic Compressors

Model HP No. of Bore & Stroke RPM *Piston Displacement

Cylinders (inches) Range Cubic Ft. per Rev.

QRDS-7.5 7.5 2 4.750 x 2.375 500-1000 .04871

QRDS-10 10 2 5.250 x 2.375 400-1011 .05951

·Allowable Ambient Temperature Range +32° F to 104° F

·Inlet Connections 1 npt (female)
·Discharge Manifold Connections 1 1/4 npt (female)
·Bare Compressor Weight 201 lbs.
·Compressor with Flywheel 270 lbs.

QRDS Single Stage Three Cylinder Basic Compressors

Model HP No. of Bore & Stroke RPM *Piston Displacement

Cylinders (inches) Range Cubic Ft. per Rev.

QRDS-15 15 3 4.750 x 2.375 500-1040 .07307

QRDS-20 20 3 5.250 x 2.375 500-1040 .08926

·Allowable Ambient Temperature Range +32° F to 104° F

·Inlet Connections 1 npt (female)
·Discharge Manifold Connections 1 1/4 npt (female)
·Bare Compressor Weight 15 h.p. = 280 lbs.
20 h.p. = 315 lbs.
·Compressor with Flywheel 15 h.p. = 415 lbs.
20 h.p. = 450 lbs.

* Cubic Feet per Revolution x RPM = CFM

QRD (NFPA) Series Quincy Compressor

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 QRDS Single Stage Four Cylinder Basic Compressors **

Model HP No. of Bore & Stroke RPM *Piston Displacement

Cylinders (inches) Range Cubic Ft. per Rev.

QRDS-25 25 4 5.25 x 3.00 600-1040 .15033

QRDS-30 30 4 5.25 x 3.00 600-1040 .15033

·Allowable Ambient Temperature Range +32° F to 104° F

·Inlet Connections 1 1/4 npt (female)
·Discharge Manifold Connections 1 1/4 npt (female)
·Bare Compressor Weight 488 lbs.
·Compressor with Flywheel 640 lbs.

* Cubic Feet per Revolution x RPM = CFM

** Not available as a stacked module

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SECTION 3 INSTALLATION
Receiving Delivery
Immediately upon receipt of compressor equipment and prior to completely
uncrating, the following steps should be taken:

Step 1) Inspect compressor equipment for damage that may have occurred
during shipment. If any damage is found, demand an inspection
from the carrier. Ask the carrier how to file a claim for shipping
damages. (Refer to SECTION 3, Freight Damage for complete
details.) Shipping damage is not covered by Quincy Com-
pressor warranty.

Step 2) Insure that adequate lifting equipment is available for moving the
compressor equipment.

Improper lifting can result in component or system damage, or

personal injury. Follow good shop practices and safety procedures
when moving the unit.

Step 3) Read the compressor nameplate to verify the model and size
ordered.

Step 4) Read the motor nameplate to be sure the motor is compatible with
your electrical conditions (volts, phase, hertz). NOTE: If voltage
drops below 207 volts, use a 200 volt motor. Do not substi-
tute with a triple voltage (208/230-460) 3 phase motor.

Step 5) Read the pressure relief valve nameplate to be sure it does not
exceed the working pressure shown on the compressor or any other
component in the system.

Step 6) Read and understand the safety precautions contained

within this manual. The successful and efficient operation of
compressor equipment depends largely upon the amount of care
taken to install and maintain the equipment. Quincy Compressor
strongly recommends that any or all person(s) in charge of install-
ing, maintaining, or servicing a Quincy compressor, read and
understand the entire contents of this manual in order to perform
such duties safely and efficiently.

Freight Damage
It is extremely important that you examine every carton and crate as soon as
you receive it. If there is any obvious damage to the shipping container, have
the delivering carrier sign the freight bill, noting the apparent damage, and
request a damage report.

If concealed damage is discovered at a later date, the carrier must

be notified within 15 days of initial receipt of freight. Concealed
shipping damage is not covered by Quincy Compressor Warranty.
Contact the carrier as soon as possible, giving them an opportunity to inspect

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 the shipment at the premises where the delivery was made. Do not move the
damaged freight from the premises where the original delivery was made.
Retain all containers and packing for inspection by the carrier.

A claim form can be requested from the carrier: Standard Form for
Presentation of Loss and Damage Claims (form # 3208). Your claim will need
to be substantiated with the following documents:

a.) form #3208

b.) original bill of lading
c.) original paid freight bill
d.) original invoice or certified copy
e.) other particulars obtainable in proof of loss or damage (photos,
damage inspection, etc.)
The proper description and classification of our product in the National
Motor Freight Classification 100-H, contained in item 118100, reads as follows:
Compressors, air, or air ends: with or without air tanks, hose or nozzles,
mounted or not mounted.”

We suggest that these instructions be circulated to your shipping and

receiving personnel.

Location
Quincy air compressors should be installed in an area that is clean, dry, well
lighted, adequately ventilated and not closer than 24 inches to a wall or another
compressor. Ample circulation of air across the compressor cylinders, heads
and cooler must be provided. Do not allow hot air from additional equipment
to blow towards the compressor.

QRDS basic compressors are equipped with ventilated crankcases to pro-

mote cooling of internal parts. Excessive crankcase moisture could result in
undue wear, unnecessary maintenance and reduced performance. Indoor
installation of QRDS Series compressors is recommended. If it is
necessary to install the compressor outside, it must be protected from rain and
other sources of moisture.

Protect compressor from rain and other water spray.

Inspection and maintenance checks are required daily. Therefore, sufficient

space needs to be provided around the compressor for safe and proper
inspection, cleaning, and maintenance. If at all possible, the pulley drive
system (i.e. motor pulley, compressor sheave, belts and guard) should be
located next to a wall to minimize any danger created by the drive system while
the compressor is operating.

The compressor should be operated in temperatures under 104°F. In cold

climates, the compressor should be installed in a heated building.

QRD (NFPA) Series Quincy Compressor

50328-100, November 2007 15 3501 Wismann Lane, Quincy IL - 62305-3116
 Do not operate this compressor in ambient temperatures lower
CAUTION ! than 32° F.

If the air receiver is going to be subject to temperatures of 32°F or below,

provisions must be made to guard against freezing of the pressure relief valves,
pressure gauge, check valve, and moisture drain.

Under no circumstances should a compressor be used in an area

WARNING ! that may be exposed to toxic, volatile, or corrosive atmosphere. Do
not store toxic, volatile, or corrosive agents near the compressor.

Noise
Noise is a potential health hazard that must be considered. There are federal
and local laws governing acceptable noise levels. Check with local officials for
specifications.

Excessive noise can be effectively reduced through various methods. Total

enclosures, intake silencers, baffle walls, relocating or isolating the compressor
can reduce noise levels. Care must be taken when constructing total enclosures
or baffle walls. If not properly constructed or positioned, they could contribute
to unacceptable noise levels or overheating. Consult your local Quincy dis-
tributor if assistance is required.

Unusual noise or vibration indicates a problem. Do not operate the

CAUTION ! compressor until the source has been identified and corrected.

Mounting
Proper mounting of Quincy compressors is crucial to the safe operation and
longevity of the equipment. The installation requires a flat and level concrete
floor or pad. Satisfactory results can usually be obtained by mounting the
compressor on vibration isolating pads available from your local Quincy
Distributor.

State or local codes may mandate that the compressor be anchored to the
floor. In this case the unit must be leveled and anchored. An uneven concrete
pad will cause severe vibrations resulting in cracked welds or fatigue failure.
The customer is responsible for providing a suitable foundation and isolator
mounting where necessary.

Pipe Installation
All air piping must be NFPA 99 compliant.

Induction System
Air Intake
A clean, cool and dry air supply is essential to the satisfactory operation of your
Quincy air compressor. The standard air filter that the compressor is equipped
with when leaving the factory is of sufficient size and design to meet normal
conditions, when properly serviced, in accordance with the maintenance
section of this manual. A condensate trap must be installed as close as possible

QRD (NFPA) Series Quincy Compressor

50328-100, November 2007 16 3501 Wismann Lane, Quincy IL - 62305-3116
 to the inlet filter if, as a result of installation or environmental conditions, there
is any risk of moisture forming in the inlet piping.

Remote Inlet
All inlet piping should be at least the same size (or larger) in diameter as the
inlet connection to the compressor. For every 10 feet of inlet piping or every 90°
bend, increase the inlet piping diameter by one pipe size. The inlet piping must
be thoroughly clean inside and in accordance with NFPA-99. Warranty may be
voided if a failure results from incorrectly sized or improperly installed piping.
Consult your local Quincy distributor for expert advice about installing Quincy
QRD series compressors.

If an inlet manifold is required, the pipe diameter of the manifold must be

large enough to limit the pressure drop in the inlet piping to less than 3 inches
of water. Excessive pressure drop in the inlet will significantly affect the
compressor’s performance and life. Refer to Figs. 3-1 and 3-2 for typical intake
manifold configurations.

Flex Hose

2 First Stage
4 First Stage
Cylinders
Cylinders
Fig. 3-1
Typical Intake Manifolds

Fig. 3-2
Typical Intake Manifold for Multiple Compressors

Never locate the compressor air inlet system where toxic, volatile
or corrosive vapors, air temperatures exceeding 100°F, water, or
CAUTION ! extremely dirty air could be ingested. These types of atmospheres
could adversely affect the performance of the compressor system.

Compressed Air Discharge System

Consult NFPA-99 for discharge system requirements. As with any piping,
all parts of the discharge piping should fit so as not to create any stress between
the piping and components. Use flexible hose to connect the outlet of the

QRD (NFPA) Series Quincy Compressor

50328-100, November 2007 17 3501 Wismann Lane, Quincy IL - 62305-3116
 compressor module and the MATC air treatment to the system piping so that
the vibration of the compressor does not transfer to the piping. Refer to Fig. 3-
3 for a typical discharge manifold configuration.

Fig. 3-3
Typical Discharge Manifold for Multiple Compressors

Electrical Supply Requirements

The electrical installation of this unit should be performed by a qualified
electrician with knowledge of the National Electrical Code (NEC), OSHA code
and/or any local or state codes having precedence. Note: This unit must be
grounded.

Before installation, the electrical supply should be checked for adequate

wire size and transformer capacity. A suitable circuit breaker or fused discon-
nect switch should be provided. When a 3 phase motor is used to drive a
compressor, any unreasonable voltage imbalance between the legs must be
eliminated and any low voltage corrected to prevent excessive current draw.
NOTE: If voltage drops below 207 volts, use a 200 volt motor. Do not
substitute with a triple voltage (208/230-460) 3 phase motor.

The installation, electric motor, wiring, and all electrical controls must be
in accordance with NFPA 70 National Electric Code, National Electric Safety
Code, state and local codes. Failure to abide by the national, state and local
codes may result in physical harm and/or property damage.

High voltage may cause personal injury or death. Disconnect and

DANGER ! lockout/tagout per OSHA regulation 1910.147 all electrical power
supplies before opening the electrical enclosure or servicing.

Never assume a compressor is safe to work on just because it is not

WARNING ! operating. It could restart at any time. Follow all safety precau-
tions outlined in SECTION 5, Stopping For Maintenance.

NEMA electrical enclosures and components must be appropriate

CAUTION ! to the area in which they are installed.

Overload Relay
An overload relay monitors the compressor motor electrical current and turns
the compressor motor off when an overload is sensed. It is mounted on the
bottom of the motor starter. The overload relay is designed for motors with a
1.15 service factor. The overload relay setting should be adjusted to the motor
nameplate amp rating. If the motor has a service factor rating other than 1.15,
the overload relay setting must be adjusted to compensate. Contact your
Quincy distributor for assistance.
QRD (NFPA) Series Quincy Compressor
50328-100, November 2007 18 3501 Wismann Lane, Quincy IL - 62305-3116
 Overload relays are designed to protect the motor from damage
CAUTION ! due to motor overload. If the overload relay trips persistently, DO
NOT CONTINUE TO PUSH THE RESET BUTTON! Contact your
local Quincy distributor for assistance.

Wiring the QRD (NFPA) to a Power Source

Step 1) Connect wiring and flex conduit provided from each motor junction
box to correct hole in bottom of control panel and starter.

Step 2) Connect each temperature switch from the compressors to con-

tacts located in control panel as marked for each temperature
switch. Temperature switches shutdown the compressor when
temperature is above 500°F.

Step 3) Connect wiring of unload solenoids to terminal blocks located on

control panel. The unload solenoid provides loadless starting of the
compressor on / off cycle.

Step 4) Connect wiring from CO/dew point monitor. Separate wire sets are
required for power and the alarm.

Step 5) Dryers need separate properly protected power supplies for each
dryer. Standard voltage is 110 volts. Other voltages are available.
Check for voltage of dryer supplied and current rating provided on
data plate of dryer.

Verify all wires are secure and fasteners are torqued before con-
CAUTION ! necting power to the unit.

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SECTION 4 START-UP & OPERATION
Pre-starting Checklist
Never assume a compressor is safe to work on just because it is not
WARNING ! operating. It could restart at any time. Follow all safety precau-
tions outlined in SECTION 5, Stopping For Maintenance.

Failure to perform the pre-starting checklist may result in me-

WARNING ! chanical failure, property damage, serious injury or even death.

Steps 1 through 12 should be performed prior to connecting the

unit to a power source. If any condition of the checklist is not satisfied, make
the necessary adjustments or corrections before starting the compressor.

Step 1) Remove all installation tools from the compressor and check for
installation debris.

Step 2) Check motor pulley and compressor sheaves for alignment and
tightness on shaft. (Refer to SECTION 5, Pulley / Sheave
Alignment & Belt Tension.)

Step 3) Manually rotate the compressor sheave several rotations to be sure

there are no mechanical interferences.

Step 4) Check inlet piping installation (Refer to SECTION 3, Induction

System.)

Step 5) Check belt tension. (Refer to SECTION 5, Pulley / Sheave

Alignment & Belt Tension.)

Step 6) Check all pressure connections for tightness.

Step 7) Make sure all pressure relief valves are correctly installed. (Refer
to SECTION 2, System Components.)

Step 8) Be sure all guards are in place and securely mounted. (Refer to
SECTION 2, System Components.)

Step 9) Check fuses, circuit breakers, and overload relays for proper size.
(Refer to SECTION 3, Electrical Supply Requirements.)

Step 10) Open all manual shutoff / isolation valves.

Step 11) After all the above conditions have been satisfied, the unit can be
connected to the proper power source.

Step 12) Plug in both dryers to the power source and set to the “on” position.

Step 13) Turn on the CO/dewpoint monitor and open the sampling valves.
Calibrate the dewpoint and CO per enclosed manufacturer’s in-
structions.

QRD (NFPA) Series Quincy Compressor

50328-100, November 2007 20 3501 Wismann Lane, Quincy IL - 62305-3116
 Step 14) Close the tank by-pass (must remain closed for normal operation).

Step 15) Close isolation valves to one dryer and one filter bank.

Step 16) Turn both fusible/breaker disconnects to the “on” position. Low
pressure alarm will sound. Silence the alarm by pushing the
acknowledge button.

Step 17) Jog the starter switch to check the rotational direction of the
cylinder cooling fan (fins inside sheave). It should agree with the
rotation arrow embossed on the compressor sheave. The fan should
blow cooling air across the cylinder.

Initial Starting & Operating

This instruction manual, as well as any instructions supplied by manufactur-
ers of supporting equipment, should be read and understood prior to starting
the compressor. If there are any questions regarding any part of the instruc-
tions, please call your local Quincy distributor, or the Quincy Compressor
factory.

With the pre-starting checklist completed and satisfied:

Step 1) Set both selector switches to the “auto” position and start the
compressors. Both compressors will run until the lead pressure
switch opens.

Step 2) Watch and listen for excessive vibration and strange noises. If
either exist, stop the compressor. Refer to SECTION 6, Trouble-
shooting for help in determining the cause of such problems.

Step 3) Check the air receiver pressure gauge or system pressure gauges
for proper readings. If inadequate or excessive air pressure condi-
tions exist, refer to Section 6 Troubleshooting.

Step 4) Check the operation of the pressure switch by venting system air
to the stop valve and confirming that the compressor starts or
reloads as pressure drops.

Observe compressor operation closely for the first hour of operation and
then frequently for the next seven hours. After the first eight hours, monitor
the compressor at least once every eight hours. If any abnormal conditions
exist, stop the compressor and correct the problem. After two days of operation
check belt tension, and inspect the system for leaks.

Important Operating Instructions

It is important that your QRD (NFPA) air compressor reaches proper
operating temperatures while it is running. Failure to do so will result in
unwanted moisture in the internal components. To reach these operating
temperatures a minimum run time cycle should be established. This cycle
should be reviewed with your local Quincy Compressor distributor, or contact
the Quincy Compressor factory in Quincy, Illinois at 217-222-7700 and ask for
the Service Department.

QRD (NFPA) Series Quincy Compressor

50328-100, November 2007 21 3501 Wismann Lane, Quincy IL - 62305-3116
 Daily Checklist
Do not proceed until the Pre-starting Checklist and Initial Starting &
Operating subsections have been read and are thoroughly understood.

Step 1) Check receiver sight glass to verify that liquid in the air receiver
is draining properly.

Step 2) Check system pressure.

Step 3) Check cooling fan.

Step 4) Check all pressure relief valves for proper operation.

Step 5) Check control system for proper operation.

QRD (NFPA) Series Quincy Compressor

50328-100, November 2007 22 3501 Wismann Lane, Quincy IL - 62305-3116
SECTION 5 MAINTENANCE
Stopping for Maintenance
The following procedures should be followed when stopping the compressor for
maintenance or service:

Step 1) Per OSHA regulation 1910.147: The Control of Hazardous Energy

Source (Lockout/Tagout), disconnect and lockout the main power
source. Display a sign in clear view at the main power switch
stating that the compressor is being serviced.

Never assume a compressor is safe to work on just because it is not

operating. It could restart at any time.

Step 2) Isolate the compressor from the compressed air supply by closing
a manual shutoff valve upstream and downstream from the com-
pressor. Display a sign in clear view at the shutoff valve stating
that the compressor is being serviced.

Step 3) Open a pressure relief valve within the pressurized system to allow
the system to be completely depressurized. NEVER remove a plug
to relieve the pressure!

Step 4) Open all manual drain valves within the area to be serviced.

Step 5) Wait for the unit to cool before starting to service. (Temperatures
of 125°F can burn skin. Some surface temperatures exceed 350°F
when the compressor is operating.)

Maintenance Schedule
To assure maximum performance and service life of your compressor, a routine
maintenance schedule should be developed. A sample schedule has been
included here showing suggested maintenance intervals, to help you to develop
a maintenance schedule designed for your particular application. Time frames
may need to be shortened in harsher environments.

At the back of this instruction manual you will find a Maintenance

Schedule Checklist. Make copies of this checklist and retain the master to
make more copies as needed. On a copy of the checklist, enter dates and initials
in the appropriate spaces. Keep the checklist and this instruction manual
readily available near the compressor.

Scheduled maintenance intervals are rated for continuous duty operation

at maximum pressure capability of the compressor. The service interval can
vary with duty cycle, speed and operating pressure.

QRD (NFPA) Series Quincy Compressor

50328-100, November 2007 23 3501 Wismann Lane, Quincy IL - 62305-3116
 Whichever occurs first
160 hrs. 5,000 10,000
Recom m ended Maintenance 8 hrs. or 40 hrs.or or hrs. or hrs. or
daily weekly m onthly yearly 36 m o.s
overall visual inspection
X
be sure safety guards are in place
check for unusual noise or vibrations X
m anually operate pressure relief valves X
clean cooling surfaces of intercooler, aftercooler and
X
com pressor
check for air leaks X
clean or replace air filter
X
(m ore often in hum id conditions)
check belt tension X
inspect pressure switch diaphragm and contacts X
inspect motor / starter contacts X
re-grease wrist pin needle bearing(s)
X
(see parts book for proper m aintenance kit)
inspect compressor valve assem blies, piston rings
(replace* if necessary) all bearings, gaskets, floating pin X
bushing and buttons

* Consult your local authorized Quincy distributor for specifications and repairs.

Table 5-1 Sample Maintenance Schedule

Pulley / Sheave Alignment & Belt Tension

Improper pulley/sheave alignment and belt tension are causes for motor
overloading, excessive vibration, and premature belt and/or bearing failure. To
prevent this from happening, check the pulley/sheave alignment and belt
tension on a regular basis (refer to Table 5-1, Sample Maintenance Sched-
ule).

Periodically inspect the motor pulley(s)

and compressor sheave(s) for oil, grease,
nicks or burrs. Clean or replace if neces-
sary. Make sure they are securely fas-
tened. Align the compressor sheave with
the motor or engine pulley. Drive belt
grooves of the pulley(s) and sheave(s)
should be in line with each other. The
compressor crankshaft must be parallel
to the motor or engine drive shaft.

Belt tension should be measured and

adjusted to provide smooth operation.
Fig. 5-1 Pix 1152 Step-by-step procedures are provided here
Setting Belt Tension
to correctly measure and set the drive
belt tension:

QRD (NFPA) Series Quincy Compressor

50328-100, November 2007 24 3501 Wismann Lane, Quincy IL - 62305-3116
 Step 1) Measure the span length of the drive. (Refer to Fig. 5-1, Setting
Belt Tension.)

Belt Motor Pulley Recommended

Cross Dia. Range Deflection Force (lbs.)
Section (inches) Initial Install. Minimum Maximum

4.6 7.3 4.9 6.4

B 4.7 - 5.6 8.7 5.8 7.5
5.7 - 7.0 9.3 6.2 8.1
7.1 10.0 6.8 8.8

Step 2) Determine the amount of deflection

(in inches) required to measure deflection force (in
pounds) by multiplying the span length x 1/64 (.016)
POCKET CLIP (i.e. 32” span length x 1/64 [.016] = 1/2”[.50] of deflec-
tion required to measure deflection force).

Step 3) Lay a straightedge across the top outer

surface of a drive belt from pulley to sheave.

SLIDING Step 4) At the center of the span, perpendicu-

RUBBER O-RINGS
lar to the belt, apply pressure to the outer surface
DEFLECTION
of the belt with a belt tension gauge (refer to Fig.
FORCE SCALE 5-2, Belt Tension Gauge). Force the belt to the
(READ DOWN)
predetermined deflection (refer to Step 2 above).
Record the reading on the belt tension gauge and
compare to the chart following Step 1 above. The
DEFLECTION deflection force reading should be within the mini-
DISTANCE
SCALE
mum and maximum values shown. Adjust belt(s)
(READ UP) accordingly. New belts should be tensioned to
values listed under “Initial Install”.

Step 5) Recheck the tension of the new belts

several times in the first 50 hours of operation and
Fig. 5-2 Belt Tension Gauge Pix 1153 adjust if necessary. Thereafter, check belt tension
on a regular basis (refer to Table 5-1, Sample
Maintenance Schedule).

Pressure Switch Adjustment

Pressure switches provided by Quincy Compres-
sor are preset at the factory and usually do not
ELECTRICAL
CONTACTS
require adjustment. However, the following proce-
dures can be performed by a qualified electrician to
adjust the pressure switch.
PRESSURE
ADJUSTMENT
SCREW
Step 1) Remove the pressure switch cover.

Step 2) While the compressor is running, screw

the spring loaded adjustment screw in (clockwise)
to increase the amount of air pressure required to
open the switch and stop the unit. Screw the
Fig. 5-3 Pressure Switch Pix 1067

QRD (NFPA) Series Quincy Compressor

50328-100, November 2007 25 3501 Wismann Lane, Quincy IL - 62305-3116
 spring loaded adjustment screw out (counterclockwise) to decrease the amount
of air pressure required to open the switch and stop the unit.

Standard pressure switches supplied by Quincy Compressor include both

pressure and differential adjustment capabilities.

Electric power always exists inside the pressure switch whenever

WARNING ! the compressor package is connected to a power supply. Be careful
not to touch any electrical leads when setting the pressure switch.

WARNING ! Never exceed the designed pressure for the system or overload the
motor beyond its Maximum Amp Draw.

* Full Load Amps x Service Factor = Maximum Amp Draw

Never assume a compressor is safe to work on just because it is not

operating. It may be in the automatic standby mode and may
WARNING ! restart any time. Follow all safety precautions outlined in SEC-
TION 5, Stopping For Maintenance.

Torquing Head to Cylinder Bolts

Torque head to cylinder bolts to specifications during assembly. Then, run the
compressor for at least 30 minutes. Shut the unit off and follow precautions
outlined in SECTION 5, Stopping for Maintenance. Retorque the head
bolts to same specifications while the unit is still hot.

*Full Load Amps (FLA) & Service Factor can usually be found on the motor nameplate.

QRD (NFPA) Series Quincy Compressor

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SECTION 6 TROUBLESHOOTING
Trouble Probable Cause

Low discharge pressure •Restricted inlet

•Defective compressor valves or valve unloading mechanism
•Leaks in the compressed air distribution system at fittings, connections,
etc.
•Unloader pilot defective or set wrong
•Pressure switch defective or set wrong
•Drive belt slipping
•Incorrect speed
•Worn piston rings or loose piston
•Leaking head gasket
•Drain valve open
•Defective pressure gauge
•Pressure relief valve leaking
•Clogged intercooler (two stage models only)
•Loose compressor valves or leaking at valve gaskets
•Compressor incorrectly sized for the operating altitude

Excessive vibration •Incorrect speed

•Compressor valves not functioning properly
•Loose pulley/sheave
•Motor or engine out of balance
•Compressor, motor or engine not secured tightly, or tightened into a
bind
•Foundation or frame inadequate
•Piping inadequately supported or tightened into a bind
•Excessive discharge pressure
•Compressor feet may need to be leveled with shims

Excessive drive belt wear •Pulley/sheave out of alignment

•Belt too loose or too tight
•Belt slipping
•Pulley/sheave wobbling
•Pulley/sheave groove damaged or rough
•Incorrect belts

Compressor loads •Air receiver too small

and unloads excessively •Compressor valves or unloaders defective
•Excessive system leakage
•Compressor operating at incorrect speed
•Unloader pilot differential set too close
•Pressure switch defective

Defective pressure switch •Moisture buildup on the pressure switch diaphragm

•Ruptured diaphragm
•Burned contact points
•Plugged air passage from the receiver to the pressure switch
•Loose electrical connection

QRD (NFPA) Series Quincy Compressor

50328-100, November 2007 27 3501 Wismann Lane, Quincy IL - 62305-3116
Trouble Probable Cause

Excessive air pressure •Air pressure gauge inaccurate

in air receiver •Pilot valve or pressure switch set incorrectly or defective
•Pressure switch wired incorrectly

Excessive •Intercooler restricted or plugged

intercooler pressure •Compressor valves in second stage broken or not functioning properly
(Two stage models only) •Pilot valve or pressure switch set incorrectly or defective
•Pressure gauge defective

Intercooler pressure •Compressor valves or valve unloaders in first stage not functioning
abnormally low properly or defective
(Two stage models only) •Restricted air inlet filter or suction line
•Pilot valve or pressure switch set incorrectly or defective
•Compressor valve or head gasket leaking
•Worn piston rings
•Defective pressure gauge
•Leaking air at intercooler or intercooler connections

Compressor overheats •Restrictive Belt Guard (see page 14 for belt guard information)
•Clogged intake system
•Defective compressor valves
•Pressure setting too high
•Clogged intercooler, internally or externally
•Inadequate ventilation, or recirculation of hot air
•Pulley/sheave rotation wrong
•Incorrect speed
•Running clearances insufficient (piston to cylinder wall or running gear)
•Compressor incorrectly sized

High discharge •Compressor valve assemblies defective

temperature •Discharge pressure too high
•Inadequate ventilation or hot air recirculating
•Cooling surfaces of compressor or intercooler excessively dirty
•Internal surface of heat exchanger fouled
•Ambient temperature too high
•Scored or excessively worn cylinder walls

Compressor knocks •Head clearance insufficient

•Piston loose in cylinder bore, cylinder bore worn, piston or piston rings
worn
•Worn rods or main bearing
•Wrong pressure setting, discharge pressure excessive
•Loose pulley/sheave
•Compressor valve assemblies loose

QRD (NFPA) Series Quincy Compressor

50328-100, November 2007 28 3501 Wismann Lane, Quincy IL - 62305-3116
Trouble Probable Cause

Excessive current draw •Low voltage (must be within 10% of nameplate voltage)
(To determine maximum •Loose electrical connection
amperage allowed, multiply •Wire size too small
the FLA on the motor •Discharge pressure too high
nameplate by the service •Intercooler plugging
factor.) •Bearings tight or seizing
CAUTION ! •Motor sized incorrectly
Motor surface temperature •Motor defective
normally exceeds 170° F. •Drive belts too tight

Failure to start •Power not on

•Blown circuit fuse CAUTION !
•Overload relay tripped Overload relays are designed to
•Low voltage protect the motor from damage due
•Faulty start switch to motor overload. If the overload
•Power failure relay trips persistently, DO NOT
•Pressure switch incorrectly CONTINUE TO PUSH THE RESET
adjusted or faulty BUTTON! Contact your local Quincy
•Loose or broken wire distributor for assistance.
•Motor defective
•Compressor seized

Motor stalls •Motor overloaded (refer to Excessive current draw)

QRD (NFPA) Series Quincy Compressor

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SECTION 7 REFERENCE INFORMATION
Approximate Capacity Correction for Altitude
Correction Factors

Altitude Single Stage Two Stage

(ft.) 25 PSIG 40 PSIG 60 PSIG 80 PSIG 90 PSIG 100 PSIG 100 PSIG 150 PSIG

Sea Level 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00
1000 0.996 0.993 0.992 0.992 0.998 0.987 0.995 .993
2000 0.992 0.987 0.984 0.977 0.972 0.969 0.991 .987
3000 0.987 0.981 0.974 0.967 0.959 0.954 0.986 .981
4000 0.982 0.974 0.963 0.953 0.944 0.940 0.980 .974
5000 0.977 0.967 0.953 0.940 0.931 0.925 0.975 .967

6000 0.972 0.961 0.945 0.928 0.917 0.908 0.970 .961

7000 0.967 0.953 0.936 0.915 0.902 0.890 0.964 .953
8000 0.962 0.945 0.925 0.900 0.886 0.873 0.958 .945
9000 0.957 0.938 0.915 0.887 0.868 0.857 0.953 .938
10000 0.951 0.931 0.902 0.872 0.853 0.840 0.946 .931
11000 0.945 0.923 0.891 0.858 0.837 0.940 .923
12000 0.938 0.914 0.878 0.839 0.818 0.932 .914
14000 0.927 0.897 0.852 0.805 0.920 .897
15000 0.918 0.887 0.836 0.784 0.910 .887

Notes:
1.) Correction factors are approximate and shown for single stage
compressors and high pressure discharge on two stage com-
pressors.

2.) This chart does not allow for air tools which require more free air at
altitiudes above sea level.

3.) To find the capacity of a compressor at a given altitude, multiply the

rated capacity of the compressor by the factor corresponding to the
altitude and discharge pressure. The result will be the actual capacity
(CFM) of the compressor at the given altitude.

QRD (NFPA) Series Quincy Compressor

50328-100, November 2007 30 3501 Wismann Lane, Quincy IL - 62305-3116
 Decal Locations

Typical Two Stage QRD Base Mounted Unit

QRD (NFPA) Series Quincy Compressor

50328-100, November 2007 31 3501 Wismann Lane, Quincy IL - 62305-3116
 Typical Two Stage QRD Simplex Base Mounted Unit

QRD (NFPA) Series Quincy Compressor

50328-100, November 2007 32 3501 Wismann Lane, Quincy IL - 62305-3116
 Typical Two Stage QRD Simplex Tank Mounted Unit

QRD (NFPA) Series Quincy Compressor

50328-100, November 2007 33 3501 Wismann Lane, Quincy IL - 62305-3116
 QUINCY COMPRESSOR responsible for loss or damage in transit after having received “In Good
Order” receipt from the carrier. All claims for loss or damage in transit should
STANDARD TERMS AND CONDITIONS be made to the carrier.
LEGAL EFFECT: Except as expressly otherwise agreed to in writing by an TITLE & LIEN RIGHTS: The equipment shall remain personal property,
authorized representative of Seller, the following terms and conditions shall regardless of how affixed to any realty or structure. Until the price (including
apply to and form a part of this order and any additional and/or different terms any notes given therefore) of the equipment has been fully paid in cash, Seller
of Buyer’s purchase order or other form of acceptance are rejected in advance shall, in the event of Buyer’s default, have the right to repossess such
and shall not become a part of this order. equipment.
The rights of Buyer hereunder shall be neither assignable nor transferable PATENT INFRINGMENT: If properly notified and given an opportunity
except with the written consent of Seller. to do so with friendly assistance, Seller will defend Buyer and the ultimate
This order may not be canceled or altered except with the written consent user of the equipment from any actual or alleged infringement of any
of Seller and upon terms which will indemnify Seller against all loss published United States patent by the equipment or any part thereof furnished
occasioned thereby. All additional costs incurred by Seller due to changes in pursuant hereto (other than parts of special design, construction, or manufac-
design or specifications, modification of this order or revision of product must ture specified by and originating with Buyer), and will pay all damages and
be paid for by Buyer. costs awarded by competent court in any suit thus defended or of which it may
have had notice and opportunity to defend as aforesaid.
In addition to the rights and remedies conferred upon Seller by this order,
Seller shall have all rights and remedies conferred at law and in equity and STANDARD WARRANTY: Seller warrants that products of its own
shall not be required to proceed with the performance of this order if Buyer manufacture will be free from defects in workmanship and materials under
is in default in the performance of such order or of any other contract or order normal use and service for the period specified in the product instruction
with seller. manual. Warranty for service parts will be Ninety (90) days from date of
factory shipment. Electric Motors, gasoline and diesel engines, electrical
TERMS OF PAYMENT: Unless otherwise specified in the order acknowl-
apparatus and all other accessories, components and parts not manufactured
edgment, the terms of payment shall be 1% 15, net forty-five (45) days after
by Seller are warranted only to the extent of the original manufacturer’s
shipment. These terms shall apply to partial as well as complete shipments.
warranty.
If any proceeding be initiated by or against Buyer under any bankruptcy or
insolvency law, or in the judgment of Seller the financial condition of Buyer, Notice of the alleged defect must be given to the Seller, in writing with all
at the time the equipment is ready for shipment, does not justify the terms of identifying details including serial number, type of equipment and date of
payment specified, Seller reserves the right to require full payment in cash purchase within thirty (30) days of the discovery of the same during the
prior to making shipment. If such payment is not received within fifteen (15) warranty period.
days after notification of readiness for shipment, Seller may cancel the order Seller’s sole obligation on this warranty shall be, at its option, to repair or
as to any unshipped item and require payment of its reasonable cancellation replace or refund the purchase price of any product or part thereof which
charges. proves to be defective. If requested by Seller, such product or part thereof
If Buyer delays shipment, payments based on date of shipment shall must be promptly returned to seller, freight prepaid, for inspection.
become due as of the date when ready for shipment. If Buyer delays Seller warrants repaired or replaced parts of its own manufacture against
completion of manufacture, Seller may elect to require payment according to defects in materials and workmanship under normal use and service for ninety
percentage of completion. Equipment held for Buyer shall be at Buyer’s risk (90) days or for the remainder of the warranty on the product being repaired.
and storage charges may be applied at the discretion of Seller. This warranty shall not apply and Seller shall not be responsible or liable
Accounts past due shall bare interest at the highest rate lawful to contract for:
for but if there is no limit set by law, such interest shall be eighteen percent (a) Consequential, collateral or special losses or damages;
(18%). Buyer shall pay all cost and expenses, including reasonable attorney’s
(b) Equipment conditions caused by fair wear and tear, abnormal
fees, incurred in collecting the same, and no claim, except claims within
conditions of use, accident, neglect or misuse of equipment, improper storage
Seller’s warranty of material or workmanship, as stated below, will be
or damage resulting during shipping;
recognized unless delivered in writing to Seller within thirty (30) days after
date of shipment. (c) Deviation from operating instructions, specifications or other
special terms of sale;
TAXES: All prices exclude present and future sales, use, occupation,
license, excise, and other taxes in respect of manufacture, sales or delivery, (d) Labor charges, loss or damage resulting from improper operation,
all of which shall be paid by Buyer unless included in the purchase price at maintenance or repairs made by person(s) other than Seller or Seller’s
the proper rate or a proper exemption certificate is furnished. authorized service station.
ACCEPTANCE: All offers to purchase, quotations and contracts of sales In no event shall Seller be liable for any claims whether arising from breach
are subject to final acceptance by an authorized representative at Seller’s of contract or warranty or claims of negligence or negligent manufacture in
plant. excess of the purchase price.
DELIVERY: Except as otherwise specified in this quotation, delivery will THIS WARRANTY IS THE SOLE WARRANTY OF SELLERS AND
be F. O. B. point of shipment. In the absence of exact shipping instruction, ANY OTHER WARRANTIES, WHETHER EXPRESS OR IMPLIED IN
Seller will use its discretion regarding best means of insured shipment. No LAW OR IMPLIED IN FACT, INCLUDING ANY WARRANTIES OF
liability will be accepted by Seller for so doing. All transportation charges are MERCHANTABILITY AND FITNESS FOR PARTICULAR USE ARE
at Buyer’s expense. Time of delivery is an estimate only and is based upon HEREBY SPECIFICALLY EXCLUDED.
the receipt of all information and necessary approvals. The shipping schedule LIABILITY LIMITATIONS: Under no circumstances shall the Seller have
shall not be construed to limit seller in making commitments for materials or any liability for liquidated damages or for collateral, consequential or special
in fabricating articles under this order in accordance with Seller’s normal and damages or for loss of profits, or for actual losses or for loss of production or
reasonable production schedules. progress of construction, whether resulting from delays in delivery or perfor-
Seller shall in no event be liable for delays caused by fires, acts of God, mance, breach of warranty, negligent manufacture or otherwise.
strikes, labor difficulties, acts of governmental or military authorities, delays ENVIROMENTAL AND OSHA REQUIREMENTS: At the time of ship-
in transportation or procuring materials, or causes of any kind beyond Seller’s ment of the equipment from the factory, Quincy Compressor / Ortman Fluid
control. No provision for liquidated damages for any cause shall apply under Power will comply with the various Federal, State and local laws and
this order. Buyer shall accept delivery within thirty (30) days after receipt of regulations concerning occupational health and safety and pollution. How-
notification of readiness for shipment. Claims for shortages will be deemed ever, in the installation and operation of the equipment and other matters over
to have been waived if not made in writing with ten (10) days after the receipt which the seller has no control, the Seller assumes no responsibility for
of the material in respect of which any such shortage is claimed. Seller is not compliance with those laws and regulations, whether by the way of indem-
nity, warranty or otherwise.
June 30, 2003
QRD (NFPA) Series Quincy Compressor
50328-100, November 2007 34 3501 Wismann Lane, Quincy IL - 62305-3116
 MAINTENANCE SCHEDULE CHECKLIST

Use this form to develop a routine maintenance schedule and record of performed maintenance. In the numbered columns enter the initials of the
person who performed the maintenance and the date. Enter additional maintenance procedures in the spaces provided in the left hand column as
needed per your application.

Equipment operating under humid or dirty conditions may require shorter intervals between scheduled maintenance.

The instruction manual provided with Quincy Compressor products, as well as any instructions supplied by manufacturers of supporting
equipment, should be read and understood prior to performing maintenance.

NOTE: Make your entries on a copy of this form. Retain this original form to make more copies in the future.

Suggested Weekly (40 hrs.) Intervals

Maintenance Procedures 1 2 3 4 5 6 7 8 9 10 11 12
•manually test pressure relief valves
•
•clean surfaces of intercooler
•
•check distribution system for leaks
•
•check for contaminated lubricant *
•
•check for compressor/vacuum leaks
•
•

Suggested Monthly (160 hrs.) Intervals

Maintenance Procedures 1 2 3
•check belt tension (if applicable)
•
•torque sheave fasteners (if applicable)
•
•change lubricant (& filter if applicable)*
•

*QRD Series excluded 50253-100

mnchklst.doc
Reciprocating / Systems:
Reciprocating 217.222.7700
Air Master 217.277.0270
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