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Instruction Manual for

. QRD” Series Compressors
b

CAUTION
Air compressors are complicated and can cause
serious injury or death if operated improperly.
Before installing or operating this compressor, read
and understand this manual, and follow all safety precautions!!
I

Parl # 50118-102
Date of issue: December 1997
 WARRANTY
QUINCY COMPRESSOR DIVISION RECIPROCATING PRODUCTS
QRD SERIES AIR COMPRESSORS

GENERAL PROVISIONS
Coltec Industries/ Quincy Compressor Division (“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 manufac-
turer.

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 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.

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 on single stage and two stage compressors
Operation at 125 p.s.i. on two stage compresscms is limited to (36) months, or 8,000 hours. Operation at 150 psi. is hmited to
(36) months or 6,000 hours of operation. High temperature probes in each head must be functional on all models.

The hour meter supplied with factory units must he 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 identifymg 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, H. within tcn (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 spec~al 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 Series Quincy Compressor

50118-102, December 1997 i 3501 Wismann Lane, Quincy, IL -62305-3116

 Contents
SECTION 1 SAFETY
Safety First .............................................................................................................................................l
Summary of Changes .............................................................................................................................3

SECTION 2 SYSTEM DYNAMICS

Description &Application ......................................................................................................................4
Principles of Compression Cycles ..........................................................................................................4
Principles of Lubrication Systems .........................................................................................................4
Principles of Cooling Systems ................................................................................................................4
Principles of Dryers &Filters ................................................................................................................5
Control Components ...............................................................................................................................5
Control Versions ...............................................................................................................<.....................5
Specifications ........................................................................................................................................lO

SECTION 3 INSTALLATION
Receiving Delivery ................................................................................................................................l2
Freight Damage ....................................................................................................................................l2
Location ................................................................................................................................................l3
Electrical Supply Requirements ..........................................................................................................l4
Mounting ...............................................................................................................................................l5
System Components .............................................................................................................................l5
Induction System ............................................... .................................... .......... ................ ................. 16
Compressed Air Discharge System .....................................................................................................l7

SECTION 4 START-UP & OPERATION

Pre-Starting Checklist .........................................................................................................................l9
Initial Starting &Operating ................................................................................................................2O
Daily Starting Checklist ................................................................... ............ . .. . . ...............20

SECTION 5 MAINTENANCE
Stopping for Maintenance ....................................................................................................................2l
Maintenance Schedule .........................................................................................................................2l
Pulley /Sheave Ai~ment & Belt Tension .........................................................................................22
Pressure Switch Adjustment ............................................................................................................... 23
Torque Specifications ..........................................................................................................................24

SECTION 6 TROUBLESHOOTING
Troubleshooting ............................................................!..... .................................................................. 25

SECTION 7 REFERENCE INFORMATION

Approximate Capacity Correction for Altitude ...................................................................................28
Decal Locations .....................................................................................................................................29

QRD Series Quincy Compressor

50118-102, December 1997 ii 3501 Wismann Lane, Quincy IL -62305-3116

 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
“safetyfirst” concept to you by providing safety precautions throughout its pages.

“DANGER !“, ‘WARNIN G !“, 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 lowercase 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 i~”ury or

W~NING 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

byrnanufacturers 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.

Corn pressers are precision high speed mechanical equipment requiring cau-
tion in operationto 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 lockoutitagout (per O. S. H.Aregulation 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 0, S.H.A 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.
—
QRD Series Quincy Compressor
50118-102, December 1997 1 3501 VVismann Lane, Quincy IL -62305-3116
 . Do not remove or paint over any DANGER!, WARNING!, CAUTION!, or
instructional materials attached to the compressor. Lack of information regard-
ing 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.

●Alt erations must not be made to this compressor without Quincy Compressor’s
approval.

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

.Do not operate the compressor in excess of the A. S.M. E. 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.

●Reckless behaviour 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. Iffor any reason anypartofthe 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 O. S.H.A. 29

DANGER ! C.F.R. 1910.134 or F.D.A. 21 C.F.R. 178.3570 or N.F.P.A. 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 isherebywarnedthat failure to observe the above safety precautions
may result in serious injury to personnel and/or damage to property.

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.

QRD Series Quincy Compressor

50118-102, December 1997 2 3501 Wismann Lane, Quincy IL -62305-3116

 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 equipment
-—
previously or subsequently sold.

Summary of Changes to This Manual

(since previousprinting dated January 1997):

. Specifications and control schematics were updated to include new QRDS-

10 information.
. Sample maintenance schedule was updated.
. Torque specifications were clarified.
. Information pertaining to mounting was expanded.

—
QRD Series Quincy Compressor

50118-102, December 1997 3 3501 Wismann Lane, Quincy IL -62305-3116

SECTION 2 SYSTEM DYNAMICS
Descn”ption & Application
The Quincy Compressor QRD Series consists of heavy duty industrial, belt
driven, single or two stage air cooled compressors. Single stage compressors are
capable of delivering up to 100 P.S.I. G. continuously. Two stage compressors can
deliver up to 150 P. S.I,G. continuously, depending upon operating and mainte-
nance parameters (consult factory).

Principles of Compression Cycles

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.

Two Stage Compressors

During the downstroke of the piston of a two stage compressor, air is drawn
through an intake valve in the head of the compressor into the low pressure
cylinder and compressed during the upstroke of the piston.

The compressed airis then released through a discharge valve in the head of
the compressor to an intercooler (usually finned tubing) where the heat resulting
from compression is allowed to dissipate. The cooler compressed airis then drawn
into a second compression cylinder, the high pressure cylinder, for compression
to final pressure.

From there the compressed air is released through a discharge valve to an air
receiver tank or directly to a network of compressed air supply lines. In one
revolution of the crankshaft a compression cycle is completed.

Principles of Lubrication Systems

No lubrication is required for the pistons and cylinders. P, T. F. E.@ composite
compression rings provide sealing and P. T. F. E.@ 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.

Principles of Cooling Systems

Fan blades of the compressor sheave force ambient air across fins of a discharge
manifold and the cylinder heads, and intercooler fins of two stage compressors,
to cool the compressor. QRD series compressors are normally setup at the factory
with a sheave that turns in a counterclockwise rotation (refer to directional arrow
on sheaue). Due to standard drive motor limitations, it is recommended that the
compressor be operated in temperatures under 104”F.

QRD Series Quincy Compressor

50118-102, December 1997 4 3501 Wismann Lane, Quincy IL -62305-3116

 Principles of Dtyers & Filters
Moisture occurs naturally in airlines 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 airlines. 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, prevents airline freeze-ups, andreducesproduct
rejects.

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

Pilot Valve: Used in conjunction with head unloaders when the compressor is
to run continuously and an operating pressure range is to be maintained. Refer
to your parts manual for correct pilot valve, ranges and settings.

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

Control Versions
—
QRDS single stage compressors can be
operated with one of three control con-
vFNT
figurations: ControlVersionL, S orLVD.
PRESSURE
RELIEF VEN1
VALVE DISCHARGE LINE

%
CHECK VALVE
\
Control Version L (for start/stop opera-
tion, see Fig. 2-1, Control Version L
Schematic) automatically starts and
stops the compressor in response to a
pressure switch. The pressure switch
‘----+” t /-’-pREssuREswTcH detects the demand for compressed air
and allows the unit to start. When the

PRESSURE GAuGE ~
H \
demand is satisfied, the pressure switch
stops the unit.

L PRESSW?E RELEASE VALVE

ON PRESSURE SWITCH

SINGLE STAGE QF?DS

NOTE
11 INSTALL PRSSSME RELIEF VALVE S0 TtlAT L401STUUE
CAN NOT ACCMJLATE IN VALVE WET
2 ) uSE FLEXIBLE LINE BETWEEN REMOTE RECEIVER ANO
CCA4PRESS0R TO REDuCE STRAIN ON PIPINC

Fig. 2-1 Control Version L Schematic

— (startfstop operation)
QRD Series Quincv
., Compressor
-–,.
50118-102. December 1997 5 3501 Wismann Lane, Quincy IL -62305-3116
 ‘RE’2LJr..-,,:
(“ A12 REcE, vER (
v ALVE

r+OM COMPRESSOR DISCHARGE

Control Version S (for continuous run
or load/unload operation, see Fig. 2-2,
,? Control Version S Schematic) allows
the compressor to run continuously, with
the unit loading and unloading in re-
PILOT V4LVE
sponse to a pilot valve. This control ver-

K sion should be used whenever the com-

pressor must start more than 6times per
hour. Ifthe demand for compressed airis
continuous and exceeds one-half or more
of the compressor’s capacity, Control Ver-
sion S or LVD should be used.

WP1768C
Fig. 2-2 Control Version S Schematic
(continuous run operation)

Control Version LVD

(see Fig.2-3, ControlVer-
sion LVD Schematic)
provides for the selection
of either startlstop or con-
tinuous run operation. To
operate the compressor in
the startlstop mode, screw
the knurled knob on the
pilot valve all the way in.
(Note : The pilot valve
cut-out setting must be
set lower than the pres-
sure switch cut-out set-
ting. This will ensure
that the compressor
will not operate in the
continuous run mode.)

To operate the com-

pressor in the continuous
run mode, turn the knurled
knob on the pilot valve
W1’1’/b6A out .
Fig. 2-3 Control Version LVD Schematic
(dual control operation)
QRD Series Quincv Commessor

50118-102, December 1997 6 3501 Wismann Lane, Quincy IL -62305-3116

 F’Rm:,:,$ VENT ., SCHARGI LIW
CHECK VALVE
VALVE

,(ENT

— pRESSURE
REI. IEF
VALVE

NR RECEIVER FRoM COMPRESSOR DISCHARGE

,,, —PRFS SURF SWITCH QRDT two stage compressors can be

/

,, -
,.
operated with either control version SV or
(~~ }

,> SVD.
, Lr
/’
PRESSURE G)u GE 2’ vENT
‘~7 ‘ ._,w.>>uKh .WIILI+
Control Version SV(see Fig.s2-4, 2-5 &
‘\L ?P!S5URE PELFASF VALVE
?1 13
2-6 Control Version pro-
SV Schematic)
~,,,k . %%,

vides for the selection of startlstop or con-

‘- . .. .
3.tiA”
,, C1: VOID
N> R(,JALLV
v,!L” E
OPEN
tinuous run operation via a selector switch
lL11Et4s7 AGE .
T,> PE?!D LINLOADIRC
located on the electrical control panel.
DuMP VPL$E N
,.

. . -V6N, -0
ATMOSPHERE

b-”

‘~’ ~}a#f -;, ,: ‘;’;’ #

, , >, 3.$, & @ ‘.;;;; $ $j i
i-- ~

,, VP:;5S ,?
,N1e R71Ac, k

Fig. 2-4 Control Version SV Schematic WP1768LI

(solenoid valve dual control operation)

—
,FJWRE -
‘,ENT O,, CHAPGE LINE -,
RZLIE= \
“.,!, . CHECK VALVE \,
\
‘\
T VE,, T

)++
PRESSURE
——— . r>/’- RELIEF
VALVE

(
AIR RECEIVER o —— FROM COMPRESSOR DISCHAt

‘~~.

— ‘RE55URE SWITCH

\
p+

PRESSURE G$UGE /

PRE:SURE SWITCH
PRESSURE RELEASE vALVE

AT MO’51+ERE
ATMosPHERE

- )-WA( NORMALLY OPEN

,50LE NOID VALVE

.10 HE4D UN. OADERS

INTERST AGE
DUMP VALVE

- VENT TO NOTE DASHED LINES REPRESENT CONTROL LINES

A 1 MOSFHERk s~PP~,~D By o~~~~

Two STAGE
1

COMP::3SOR
INTERSTAGE QRDT

WP17S5D1
Fig. 2-5 Control Version W Schematic
(solenoid valve dual control operation; base mount unit)
QRD Series Quincy Compressor

50118-102, December 1997 7 3501 Wismann Lane, Quincy IL -62305-3116

 PResslss m,,.,, “m”,
(LOCATED ON T* SIW G+
P.,,*W, ,.,,.. .s , ,
\

1 “’%VE%YVAYK =@’ ---

.,., ~L”MP.,.,oR w ,
/ 3-ViAY NORMALLY 0,,.
yN:,A. SOLENOID
VA, “t

TO .,., !miLoA. E,,

:OMPRE, K.F w *

.
cow:,
h~
y.,
!,4IN,.
mm,.,
COl”wwssm
m,,”,,,,
o
LINE
D ,“,,..

NO
LINE
,

COMPRESSOR
NO 2 ~
/’”
I
–“EN- ,0
A -MO,?.,,,

/ ,.,,.,,..,

:oW’RESS3R NO 2 1
P. C, SLJ!E RELIEF “AL,,
, owe.
,,,,.
x..
s,,.,
l“. z
.ISCHAROE ,!.,

Fig. 2-6 Control Version SV Schematic WP176!3F

(solenoid valve dual control operation; duplex unit)

Control Version SVD (see Fig.

/..–g:p
VENT
2-7, Control Version SVD
Schematic) provides for the se-
L FR0h4 COMPRE550R CISCI.ARCE
lection of startistop operation
through the unit controls or from
PRES5URE GA, (GE —.
I a remote Demand-A-Matic con-
I

‘~>... __ troller via a selector switch on

+
VENTI
the compressor control panel. An
optional selector switch can also
be added to the compressor con-
trol panel to provide continuous-
“Eh
run capability.
TO HEAD “NLOACER3
,,,,, s,.., —,
DLMP VALVE
~.

.- ”,., T.
/ ATMOSPHERE
t ,W”” NOTE DAS*D LINES REPRESENT CONTRCL LINES SUPPLIED By OTHERS
‘1

TWO STAGE
QRDT
WP176+3
Fig. 2-7 Control Version SVD Schematic
(solenoid valve auto-demand control operation)
uRD Series Quincy Compressor

50118-102, December 1997 8 3501 Wismann Lane, Quincy IL -62305-3116

 Electrical Control Operation
A wiring diagram is provided with all QRD units and can be found inside the
control panel.

Switches

“START”: This push button starts the compressor. It must be depressed after
power interruption or other unit shutdown.

“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!

‘HAND”: Will operate the motor continuously. The unit will load and unload in
response to the pilot wdve.

f20 V.A.C. ONY “AUTO” : Provides unattended startktop operation. The unit will start
automatically, load, and stop in response to the automatic controls.
IA
1
1
L__, Indicators
i
I
LD-
11- -.-g=l “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!
STARTER ~~
AUXILIARY
“HIGH AIR TEMPERATURE”: Indicates high air temperature, power outage,
CONTACT
or other shutdown has occured. Allow the unit to cool and correct the problem
Fig. 2-7 Hourmeter before restarting the unit.
Wiring Schematic
“HOURMETER’ : An hourmeter is supplied as standard equipment on every
QRDunit and provides amethodofrecordingthe number ofhourselapsedsince
15 AMPS. MI&K30 V.A, C.
the last service interval. (Note: Whenever a QRD unit is purchased
without the electrical controls, it is the user% responsibility to wire
li
an hourmeter, provided by the seller, into the control system, see Fig.
r ---- J L-, 2-7, Hourmeter Wiring Schematic.)
I I
Cabinet Interlock

A cabinet interlocks supplied onQRD units with a cabinet as a safety shutdown

device so that the unit cannot run while the cabinet is removed. (Note:
Whenever a QRD unit is purchased without the electrical controls, it
is the user’s responsibility to wire a shutdown device, provided by the
Fig. 2-8 Cabinet Interlock
Wiring Schematic seller, into the control system, see Fig. 2-8, Cabinet Interlock Wiring
Schematic.)

QRD Series Quincy Compressor

50118-102, December 1997 9 3501 Wk.mann Lane, Quincy IL -62305-3116

 Specifications
QRDS Single Stage Two Cylinder Compressors

Model HP No. of Bore & Stroke CFM FAIY.RPM

Cylinders (inches) 75 psig 100 psig

QRDS- 5 2 4.000 x 2.375 19.0/850 18.21905

QRDS-7.5 7!5 2 4.’750 X 2.375 32.5/950 27.6 / 859
QRDS-10 10 2 5.250x2.375 40.81956 36.2 / 875

-Allowable Ambient Temperature Range +32” Fto 104° F

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

QRDS Single Stage Three Cylinder Compressors

Model HP No. of Bore & Stroke CFM FAD/RPM

Cylinders (inches) 75 psig 100 psig 125 psig

QRDS-15 15 3 4.750 X 2.375 60.5/1155 51.0/1020 NIA

QRDS-20 20 3 5.250 X 2.375 69,011020 65.1 / 1020 NIA

“AUowableAmbient Temperature Range +32° Fto 104” F

-Inlet Connections 1 npt (female)
“Discharge Manifold Connections 1 ‘/4 npt female)
“Bare Compressor Weight 1.5hp. = 280 lbs.
20 hp. = 315 ~h.

“Compressor with Flywheel 15 h.p, = 415 lbs.

20 h.p, = 450 .lbs.

QRDS Single Stage Four Cylinder Compressors

Model HP No. of Bore & Stroke CFMFAIYRPM

Cylinders (inches) 50 psig 75 psig 100psig

QRDS-25 25 4 5,25x3.00 117.5/1020 109.1 / 1020 95.5/930

QRDS-30 30 4 5.25 X 3.00 N/A N/A 103.1 / 1020

.AllowableAmbient Temperature Range +32” F to 104Q F

“Inlet Connections 1 ‘/4 npt female)
,DischargeManifold Connections 1 ‘/4 npt (female)
Bare Compressor Weight 488 Zbs.
-Compressor with Flywheel 640 ibs.

QRD Series Quincy Compressor

50118-102, December 1997 10 3501 Wkmann Lane, Quincy IL -62305-3116

 QRDT Two Stage Four Cylinder Compressors

Model HP No. of Bore & Stroke CFM FAIXRPM

Cylinders (inches) 100psig 125 psig 150 psig

QRDT-20 20 4 7.12 X 4x 3.00 79.5/705 79.0/705 74.21645

QRDT-25 25 4 7.12 X 4x 3.00 100.0 /870 94.2/825 88.1/780
QRDT-30 30 4 7.12 x4x 3.00 114.211020 104.2/930 102.0 I 930

.AllowableAmbient Temperature Range +32” F to 104° F

Inlet Connections 2 npt (female)
Discharge Manifold Connections 1 l/2 npt (female)
Bare Compressor Weight 518 lbs.
Compressor with Flywheel 680 lbs.

QRDT Two Stage Three Cylinder Compressors

Model HP No. of Bore & Stroke CFM FAWRPM

Cylinders (inches) 100psig 125 psig 150 psig

QRDT-10 10 3 5.25x4.00x2.375 41.9/855 38.3/780 34.5 I 705

QRDT-15 15 3 5.25x4.00x2.375 51.0/ 1020 50.5/1020 50.0/1020

AllowableAmbient Temperature Range +-32° Fto 104” F

Inlet Connections 1 npt (female)
Discharge Manifold Connections 1 npt (female)
‘Bare Compressor Weight 3101bs.
Compressor with Flywheel 445 lbs.

QRD Series Quincy Compressor

50118-102, December 1997 11 3501 Wismann Lane, Quincy IL -62305-3116

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 Compressor
warrant y.

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

Improper lifting can result in component or system damage, or

CAUTION ! pers.nalinju~.Follow~ood shoppracticesand safety proced~es
when moving the unit.

Step 3) Read thecompressornameplate toverifjthemodel 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 reliefvalve nameplate to be sure it does not exceed
the working pressure shown on the compressor or any other compo-
nent 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 installing,
maintaining, or servicing one of our compressors read and under-
stand the entire contents of this manual in order to perform such
duties safely and efllciently.

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 the shipment
at the premises where the delivery was made. Do not move the damaged freight
QRD Series Quincy Compressor

50118-102, December 1997 12 3501 Wismann Lane, Quincy IL -62305-3116

 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 Presenta-
tion 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, dam-
age inspection, etc. )
The proper description and classification of our product in the National Motor
Freight Classification 1OO-H, contained in item 118100, reads as follows: Com-
pressors, 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, and adequately ventilated not closer than 24 inches to a wall or another
compressor. Ample circulation of air across the compressor cylinders, heads and
cooler (if so equipped) must be provided. Compressors should be located in such
away that the sheave fan of one compressor does not blow hot air towards another
compressor.

QRD compressors are equipped with ventilated crankcases to promote cooling

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

CAUTION ! 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.

Due to standard drive motor limitations, it is recommended that the compres-

sor be operated in temperatures under 104”F. In cold climates, the compressor
should be installed in a heated building.

CAUTION ! Do not operate this compressor

than 32° F.
in ambient temperatures lower

QRD Series Quincy Compressor

50118-102, December 1997 13 3501 Wismann Lane, Quincy IL -62305-3116

 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

WMNING ! thatrnaybe exposed to toxic, vo~atile, 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 Compressor
Distributor 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.

Electrical Supply Requirements

The electrical installation of this unit should be performed by a qualified
electrician with knowledge of the National Electrical Code (N.E C. ), O. S.H.A.
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 disconnect
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 70-1993 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 ancVor property damage.

High voltage may cause personal injury or death. Disconnect and

DANGER ! lockoutitagout per O. S.H.A 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

WMNING ! operating. It could restart at any time. Follow all safety precautions
outlined in SECTION 5, Stopping For Maintenance.

QRD Series Quincy Compressor

50118-102, December 1997 14 3501 Wismann Lane, Quincy IL -62305-3116

 CAUTION ! NEMA
electrical enclosures and components must be appropriate
to the area installed.

—
Mounting
Proper mounting of Quincy compressors is crucial to the
FLANGE NUT
Leave loose & lock safe operation and longevity of the equipment. The instal-
with a h<,k.~ “M

RECEl\fER FOOT
lation requires a flat and level concrete floor or pad.
FLANGE NUT
Satisfactory results can usually be obtained by mounting
ISOLATOR BACKING
RECEIVER FOOT
PLATE OR SHIMS IF the compressor on vibration isolating pads available from
NECESSARY
ISOLATOR BACKING your local Quincy Distributor. Refer to Fig. 3-1, Isolator
PLATE ISOIATOR
Installation for Unanchored or Anchored Receiver.
BOLT

State or local codes may mandate that the compressor

$8
b- ~,w:::o
be anchored to the floor. In this case the unit must be
leveled and anchored making absolutely certain the feet
are not stressed in any manner. Leave the flange nut
loose & lock it with aback-up nut! Uneven feet drawn
ANCHORED
tightly to the concrete pad will cause severe vibrations
110?.65
Fig. 3-1 Isolator Installation for
resulting in cracked welds or fatigue failure. The cus-
Unanchored or Anchored Receiver tomer is responsible for providing a suitable foundation
and isolator mounting where necessary.

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.

Drive Pulleys / Sheaves

Drive pulleys & compressor sheaves must be properly aligned and drive belt
tension set to specifications (refer to SECTION 5, Pulley JSheaveAlignment
&BeU 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

W’NING ! to shatter. In an instant, the pulley or sheave could separate into
fkagments 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).

Guards
The QRD 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 should be designed to achieve the required degree of protec-
tion and still allow full airflow 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 shall be in compliance with
O. S. H.Asafety and health standards 29 CFR 1910.219in O. S. H.Amanual 2206
QRD Series Quincy Compressor

50118-102, December 1997 15 3501 Wismann Lane, Quincy IL -62305-3116

 and any state or local codes.

Guards must be fastened in place before starting the compressor

W~NING ! and never removed before shutting off and locking out the main
power supply.

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 shutoffvalve 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 sys-

DANGER ! tems in accordance with ASME B19 safet y standards. Failure to

provide properly sized pressure relief valves may cause property
damage, severe personal injury or even death.

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.

If however, the compressor is to be installed in a location where considerable

dust, dirt and other contaminants are prevalent, consult your local Quincy
Distributor for advice and optional filters. It is the user’s responsibility to provide
adequate filtration for those conditions. Oil bath filters are not to be used.
Warranty will be void if a failure is determined to be caused by inadequate
filtration,

Remote Inlet Filters

Depending on the size of the compressor and the size and construction of the
QRD Series Quincy Compressor

50118-102, December 1997 16 3501 Wismann Lane, Quincy IL -62305-3116

 room in which the unit operates, the air inlet may have to be located outside
of the room. If it is necessary to remotely install the air filter, make the inlet
piping as short and direct as possible. Remotely installed air filters can lead to
vibrations in the inlet piping. These vibrations can be minimized by adding a
pulsation dampener in the inlet piping between the remote inlet filter(s) and the
compressor.

If the intake is piped to outside atmosphere, a hooded filter should be

installed to prevent water or snow from being ingested into the compressor.

All inlet piping should beat 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.

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

The discharge piping should be of the same diameter as the compressor
discharge connection, or sized so that the pressure drop at any point in the
system does not exceed 10% of the air receiver pressure. Install auxiliary air
receivers near heavy loads or at the far end of a long system. This will insure
sufficient pressure if the use is intermittent, or sudden large demands are
placed on ~he system.
—
Discharge piping should
slope to a drop leg (refer to
— SLOPE * Fig. 3-2, Typical Drop
Leg& Component Loca-
tion) or moisture trap to
provide a collection point
where moisture can be
easily removed, All service
line outlets should be in-

\..-.
stalled above the moisture
traps to prevent moisture
from entering the tool or

w ~&
device using the air.
SAFETY Manual shutoffvalves, pro-
VALVE
tected by pressure relief
SAFETY vALVE
~, valves, should be installed
\,
.— at all service line outlets
L“
,- p~~~s”~~ PRESSURE ,/”
SWITOi L ~()~~”~~
to eliminate leakage while
GAGE
mA~ 1 #&& Lv&LvE
the tools are not in use.

Fig. 3-2 Typical Drop Leg & Component Location As with any piping, all
r%1201
-.
parts ot’the discharge pip-
ing should fit so as not to create any stress between the piping and components.

—
QRD Series Qumcy Compressor

50118-102, December 1997 17 3501 Wismann Lane, Quincy IL -62305-3116

 Pneumatic Circuit Breakers or Velocity Fuses
The Occupational Safety and Health Act (0. S. H.A.), Section 1926.303, Para-
graph 7, published in the Code of Federal Regulations 29 CFR 1920.1, revised
July 1, 1982 states that all hoses exceeding l/2° inside diameter shall have a
safety device at the source of supply or branch line to reduce pressure in case
of a hose failure”

These pneumatic safety devices are designed to prevent hoses from whip-
ping and/or the loss of hazardous or toxic gasses, all of which could result in a
serious or fatal accident.

Do not use plastic pipe, rubber hose, or lead-tin soldered joints in

W~NING ! any part of the compressed air system.

Pressure Vessels

Airreceivertanks and other pressure containing vessels such as (but not limited
to) pulsation bottles, heat exchangers, moisture separators and traps, shall be in
accordance with ASME Boiler and Pressure Vessel Code Section VIII and ANSI
B 19.3 safety standards. They should be equipped with a pressure relief valve,
pressure gauge, tank drain, & manual shutoff valve (refer to Fig. 3-2, Typical
Drop Leg & Component Location).

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 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 drain valve is recom-
mended.

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 reliefvalves,
pressure gauge, check valve, and moisture drain.

QRD Series Quincy Compressor

50118-102, December 1997 18 3501 Wismann Lane, Quincy IL -62305-3116

 SECTION 4 START-UP & OPERATION
Pre-starting Checklist
—
Never assume a compressor is safe to work on just because it is not
W~NING ! operating. It could restart at any time. Follow all safety precautions
outlined in SECTION 5, Stopping Forlkfaintenance.

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

W~NING ! 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 reliefvalves are correctly installed. (Refer to
SECTION3, System Components. )

Step 8) Be sure all guards are in place and securely mounted. (Refer to
SECTION 3, System Components. )

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

Step 10) Open all manual shutoff valves at and beyond the compressor
discharge.

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

Step 12) Jog the starter switch to check the rotational direction of the
compressor. It should agree with the rotation arrow embossed on the
compressor sheave.
—
QRD Series Quincv Comrxessor
—
50118-102, December 1997 19 3501 Wismann Lane, Quincy IL -62305-3116
 Step 13) Check for proper rotation of the cylinder cooling fan (fins inside
sheave). The fan should blow cooling air across the cylinder.

Initial Starting & Operating

TM 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 Distributor, or the Quincy Compressor factory.

With the pre-startingchecklist completed and satisfied, start the compressor.

Watch and listen for excessive vibration and strange noises. If either exist, stop
the compressor. Refer to SECTION 6, Trozddeshooting for help in determining
the cause of such problems.

Check the air receiver pressure gauge or system pressure gauges for proper
readings. If inadequate or excessive air pressure conditions exist, refer to Section
6 Troubleshooting.

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 are
witnessed, stop the compressor and correct the problem. After two days of
operation check belt tension, and inspect the system for leaks.

Daily Starting Checklist

I)onot proceed until the Pre-starting Checklist and Initial Starting &
Operating subsections have been read and are thoroughly understood.

Step 1) Drain liquid from the air receiver and moisture trap (if so equipped).

Step 2) Jog the starter button and check compressor rotation.

Step 3) Start compressor per factory instructions. (Refer to SECTION 4,

Pre-Starting Checklist and Initial Starting& Operating. )

Step 4) Check system pressure.

Step 5) Check cooling fan.

Step 6) Check all pressure reliefvalves for proper operation.

Step 7) Check control system for proper operation.

QRD Series Quincy Compressor

50118-102, December 1997 20 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 O. S.H.A. regulation 1910.147: The Control of Hazardous Energy

Source (LockoutY1’agout), 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

WMNING ! operating. It could restart at any time.

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

Step 3) Lock 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 mainte-
nance schedule designed for your particular application. Time l%ames may need
to be shortened in harsher environments.

The envelope shipped with the compressor contains a Maintenance Sched-

ule 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 Series Quincy Compressor

50118-102, December 1997 21 3501 Wismann Lane, Quincy IL -62305-3116

 J
I whichever occurs first
I
+
8 hrs 40 hrs 160 hrs
5,000 10,000
hrs or hrs or
Recommended Maintenance 0. or or
daily weekly monthly J:, ~ ~s”~,s

Dram am tank, drop legs & moisture traps x

Overall visual mspectlon - be sure safety guards are m place x
Check for unusual noise or vibrations x
Manually operate pressure rehef valves x
Clean cooling surfaces of mtercooler & compressor x

Check for aw leaks x

Clean or replace am filter (more often m humid conditions) x

Check belt tension x

Inspect pressure swtch &aphragm & contacts x

Inspect motor / starter contacts x

Inspect compressor valve assernbhes, piston rings (replace* If needed)

all bearings, gaskets, floating pm bushings & buttons
x

+ Applies to factory budt packages equipped wdh HA T. SwLtches m each head assembly.
“ Consult your local authorized (@my Dwtributor for spectflcat~ons and repairs.
Table 5-1 Sample Maintenance Schedule

Pulley I Sheave Alignment & Belt Tension

Improper pulley/sheave alignment and belt tension are causes for motor
overloading, excessive vibration, and premature belt andfor 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
necessary. Make sure they are securely
fastened. Align the compressor sheave
COMPRESSOR with the motor or engine pulley. Drive
SHEAVE belt grooves of the pulley(s) and sheave(s)
DEFLECTION
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

DIAMETER adjusted to provide smooth operation. Step-
SPAN LENGTH ~, by-step procedures are provided here to
correctly measure and set the drive belt
Fig. 5-1 RX1152 tension:
Setting Belt Tension

QRD Series Quincv Compressor

50118-102, December 1997 22 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) Minimum Maximum

4.6 4.0 5.9

B 5.0- 5.4 4.5 6.7
5.6- 6,4 5.0 7.4
6.8- 9.4 5,8 8.6

Step 2) Determine the amount of deflection (in inches) required to mea-

sure deflection force (in pounds) by multiplying the
span length x l/w(.016) (i.e. 32” span length x 1/64
[.0161 = ‘/J[.501 of deflection required to measure

F? POCKET CLIP
deflection force).

Step 3) Lay a straightedge across the top outer

surface of a drive belt from pulley to sheave.

Step 4) At the center of the span, perpendicular

to the belt, apply pressure to the outer surface of the
SUDING
- RUBBER O-RINGS belt with a belt tension gauge (refer to Fig. 5-2, Belt
Tension Gauge). Force the belt to the predeter-
DEFLEcTION
FORCE SCALE
mined deflection (refer to Step 2 above). Record the
(READ DOWN) reading on the belt tension gauge and compare to the
chart following Step 1 above. The deflection force
reading should be within the minimum and maxi-
. . . . . . . . .-
mum values shown. Adjust belt(s) accordingly. New
DEFLECTION
DISTANCE belts should be initially tensioned to the maximum
SCALE
(READ UP)
value plus 33% (multiply by 1.33).

Step 5) Recheck the tension of the new belts

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

Pressure Switch. Adjustment

Pressure switches provided by Quincy Compressor
ICAL are preset at the factory and usually do not require
lxs
adjustment. However, the following procedures
can be performed by a qualified electrician to adjust
P the pressure switch.
AD

Step 1) Remove the pressure switch cover.

Step 2) While the compressors running, screw

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

QRD Series Qumcy Compressor

50118-102, December 1997 23 3501 Wkmann Lane, Quincy IL -62305-3116

 loaded adjustment screw ~ (counterclockwise) to decrease the amount of air
pressure required to open the switch and stop the unit.

Standard pressure switches supplied by Quincy Compressor are equipped

with a fixed 20 p.s.i.g. (approx. ) differential. Optional switches include both
pressure and differential adjustment capabilities.

Electric power always exists inside the pressure switch whenever

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

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

* Fu1l Load AII-IpS x Service Factor = Maximum Amp Draw

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

operating. It maybe in the automatic standby mode and may re-
W~NING start any time. Follow all safety precautions outlined in SECTION 5,
Stopping ForMaintenance.

Torque Specifications

Torquing Cylinder to Head 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 forMaintenance. Retorque the head bolts
to same specifications while the unit is still hot.

Cylinder Head
Discharge Head to Bearing Compressor
Wrist Pin to to
Manifold Valve Carrier Sheave
Satscrews Crankcase Cylinder
Bolts Plate Nut Bolts Bolts
Bolts Bolts

100 m-lbs, 30 ft.-lbs. 30 fi.-lbs. 30 ft-lbs. 25 ft-lbs 30 tt.-lbs. 75 ft-lbs.

Table 5-2 Torque Specifications

(specifications listed for-dry threads only)

*Full load amps (FM) & Service Factor can usually be found on the motor nameplate.
QRD Series Quincy Compressor

50118-102, December 1997 24 3501 Wismann Lane, Quincy IL -62305-3116

_ ————.—— ——

SECTION 6 TROUBLESHOOTING
Trouble Probable Cause
.-
Low discharge pressure ● Restricted inlet
● Defective compressor valves or valve unloading mechanism
● Leaks in the compressed air distributions ystem 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 reliefvalve leaking

● Clogged intercooler

● 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/sl~eave

● 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 Series Quincy Compressor

50118-102, December 1997 25 3501 Wkmann 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
(TWOstage models only) ● Pilot valve or pressure switch set incorrectly or defective
● Pressure gauge defective

Intercoolerpressure ● Compressor valves or valve unloaders in frost stage not functioning

abnormally low properly or defective
(TWOstage 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 (seepage 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 Series Quincy Compressor

50118-102, December 1997 26 3501 Wismann Lane, Quincy IL -62305-3116

 Trouble Probable Cause

Excessive current draw ● Low voltage (must be within 10’ZOof 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
●hermal overload fuses tripped
● Low voltage

● Faulty start switch

● Power failure

● Pressure switch incorrectly adjusted or faulty

● Loose or broken wire

● Motor defective

● Compressor seized

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

.—

QRD Series Quincy Compressor

50118-102, December 1997 27 3501 VUismann Lane, Quincy IL -62305-3116

SECTION 7 REFERENCE INFORMATION
Approximate Capacity Correction for Altitude
Correction Factors I
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
0.992 0.987 0.984 0.977 0.972 0.969 0.991 .987
0.987 0.981 0.974 0.967 0.959 0.954 0.986 .981
0.982 0.974 0.963 0.953 0.944 0.940 0.980 .974
0.977 0.967 0.953 0.940 0.931 0.925 0.975 .967

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
0.962 0.945 0,925 0.900 0.886 0.873 0.958 .945
0.957 0.938 0.915 0.887 0.868 0.857 0.953 .938
1000O 0.951 0.931 0,902 0.872 0.853 0.840 0.946 .931
11OOO 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 com-
pressors and high pressure discharge on two stage compres-
sors.

2.) This chart does not allow for air tools which require more free air at
altitudes 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 Series Quincy Compressor

50118-102, December 1997 28 3501 Wismann Lane, Quincy IL -62305-3116

 Decal Locations
Typical Single Stage QR3) Base Mounted Unit
QRD Series Quincy Compressor
50118-102, December 1997 29 3501 Wismann Lane, Quincy IL -62305-3116
 L-
dl!!!bi
L’

.“T’” “ ~Wi
Typical Single Stage QRD Unit with Horizontal Receiver
QRD Series Quincy Compressor
50118-102, December 1997 30 3501 Wismann Lane, Quincy IL -62305-3116
 —
1
J
–1
[_;
11---=-
-J B--== —
I
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Typical Single Stage QRD Duplex Unit
QRD Series Quincy Compressor
50118-102, December 1997 31 3501 VVismann Lane, Quincy IL -62305-3116
 U)
w
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Ii!il !!1
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1

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Typical Two Stage QRD Base Mounted Unit
QRD Series Quincy Compressor
50118-102, December 1997 32 3501 Wismann Lane, Quincy IL -62305-3116
 mM$
Typical Two Stage QRD Simplex Base Mounted Unit
QRD Series Quincy Compressor
50118-102, December 1997 33 3501 Wkmann Lane, Quincy IL -62305-3116
 k
‘Typical Two Stage QRD Simplex Tank Mounted Unit
QRD Series Quincy Compressor
50118-102, December 1997 34 3501 Wismann Lane, Quincy IL -62305-3116
 Quincy Service is always near. For reciprocating
There are Authorized Quincy Distributors located and natural gas engine driven
throughout the United States & Canada that stock helical screw products:
~enuine Quincy parts & accessories for a wide range of ca// 1-217-222-7700
Quincy products. or fax requests to 1-800-219-9124

Quincy Service specialists are factory trained and will For all other helical screw products:
help keep you in business. Call for Authorized Quincy call 1-334-937-5900 Ac<,ot N<] 5A1,!.(,,

Service. or fax requests to 1-800-219-9131

G)uincv ‘Compressor-

UNDENIABLY THE WORLD’S FINEST COMPRESSORS

@1991 Qumq Compressor fhs,on COIIeC Industnes