Extraction Arm

Ex-Arm 6 and 8-inch Bench and Overhead Mount

Installation and Operation Manual

Installation, Operation, and Service Information

Bench Mount Ex-Arm

Overhead Mount Ex-Arm

This manual is property of the owner. Leave with the collector when set-up and start-up are complete. Donaldson Company reserves the
right to change design and specifications without prior notice.
Illustrations are for reference only as actual product may vary.

This is the safety alert symbol. It is used to alert you to potential personal injury hazards.
Obey all safety messages that follow this symbol to avoid possible injury or death.

English IOM AD3661601 (ENG)

Master Language Revision 2
 Donaldson Company, Inc.

Process owners/operators have important responsibilities relating to combustible hazards.

Process owners/operators must determine whether their process creates combustible dust,
fume, or mist. If combustible dust, fume, or mist is generated, process owners/operators should at a
minimum:
• omply with all applicable codes and standards. Among other considerations, current NFPA standards
C
require owners/operators whose processes involve potentially combustible materials to have a current
Hazard Analysis, which can serve as the foundation for their process hazard mitigation strategies.
• Prevent all ignition sources from entering any dust collection equipment.
• esign, select, and implement fire and explosion mitigation, suppression, and isolation strategies that
D
are appropriate for the risks associated with their application.
• evelop and implement maintenance work practices to maintain a safe operating environment, ensuring
D
that combustible dust, fume, or mist does not accumulate within the plant.
Donaldson recommends process owners/operators consult with experts to insure each of these
responsibilities are met.
As a manufacturer and supplier of Industrial Filtration Products, Donaldson can assist process owners/
operators in the selection of filtration technologies. However, process owners/operators retain all
responsibility for the suitability of fire and explosion hazard mitigation, suppression, and isolation strategies.
Donaldson assumes no responsibility or liability for the suitability of any fire and/or explosion mitigation
strategy, or any items incorporated into a collector as part of an owner/operators hazard mitigation strategy.
Improper operation of a dust control system may contribute to conditions in the work area or facility that
could result in severe personal injury and product or property damage. Check that all collection equipment is
properly selected and sized for the intended use.
DO NOT operate this equipment until you have read and understand the instruction warnings in the
Installation and Operations Manual. For a replacement manual, contact Donaldson Torit.
This manual contains specific precautionary statements relative to worker safety. Read thoroughly and comply
as directed. Discuss the use and application of this equipment with a Donaldson Torit representative. Instruct all
personnel on safe use and maintenance procedures.
 Extraction Arm, 6 and 8-in

Contents
Description.................................................................................1 Standard Equipment.................................................................6
Purpose and Intended Use .....................................................2 Bench Mount Arm Assembly..............................................6
Operation....................................................................................2 Overhead Mount Arm Assembly ........................................7
Structure and Function............................................................3 Electrical Connection...........................................................8
Inspection on Arrival................................................................3 Hood Light and Switch Installation....................................9
Installation Codes and Procedures.......................................3 Preliminary Start-Up Check..................................................10
Installation.................................................................................4 Maintenance Information......................................................11
Foundations or Support Framing........................................4 Operational Checklist.........................................................11
Site Selection ........................................................................4 Arm Adjustment...................................................................12
Ex-Arm Bolt Hole Pattern.....................................................5 Optional Equipment................................................................13
Electrical Wiring....................................................................5 Overhead Mount Installation.............................................13
Bench Mount Installation..................................................14
Blower and Motor Installation..........................................14
Troubleshooting.......................................................................15
Service Notes..........................................................................18

DANGER indicates a hazardous situation which, if not avoided, will result

in death or serious injury.

WARNING indicates a hazardous situation which, if not avoided, could

result in death or serious injury.

CAUTION, used with the safety alert symbol, indicates a hazardous

situation which, if not avoided, could result in minor or moderate injury.

NOTICE is used to address practices not related to personal injury that

may result in damage to equipment.

Data Sheet

Model Number______________________________ Serial Number_______________________________

Ship Date__________________________________ Installation Date______________________________

Customer Name________________________________________________________________________

Address______________________________________________________________________________

_____________________________________________________________________________________

Filter Type_____________________________________________________________________________

Accessories___________________________________________________________________________

Other_________________________________________________________________________________

i
 Donaldson Company, Inc.

Description
The Extraction Arm (Ex-Arm) is designed to carry The Ex-Arm is available with the following options (see
airborne contamination away from the operator’s Optional equipment section for more details):
breathing zone. The Ex-Arm can operate with collectors,
• Optional Hood with light: A hood with a
single extraction fans and the main duct system where
halogen spotlight is offered for easier
other extraction arms can be connected.
visibility of the work space.
With its self-supporting features, the Ex-Arm is designed
• Optional Mounting Brackets: Wall mounting brackets
to maneuver easily allowing the inlet to be positioned
are offered to allow the Ex-Arm to be mounted to an
accurately over the desired operation zone. Additionally,
optional blower and motor.
its special design allows maximum angle adjustment
of the hood to guarantee the best extraction position
possible without compromising the operator’s field of
view and movement capabilities.
Ex-Arms are available in 6 or 8-in. Reference the table
below.

Ex-Arm Mounting Configuration Extension Typical Restriction

Inlet Hole
(feet) and Airflow* Arm Weight
Diameter
Size
Length (“wg) (lbs)
(inches) (feet)
(inches)
6 6.3 6.5 Benchmount or Overhead 6.6 2.0 @ 800 cfm 36
6 6.3 10 Benchmount or Overhead 9.8 2.0 @ 800 cfm 41
6 6.3 13 Benchmount or Overhead 13.1 2.0 @ 800 cfm 46
8 7.9 10 Benchmount or Overhead 9.8 2.0 @ 1000 cfm 56
8 7.9 13 Benchmount or Overhead 13.1 2.0 @ 1000 cfm 78
*Excessive restriction may cause flexible joint to collapse

1
 Extraction Arm, 6 and 8-in

Purpose and Intended Use Operation

Misuse or modification may result The Ex-Arm hood is positioned 8 to 12- inches above
in severe personal injury and/or the work area. Contaminated air is drawn into the hood
property damage. of the Ex-Arm flowing through the arm extension and
Do not misuse or modify. exhausting out of the work area via the connected
equipment (collector, fan, main duct system).
Ex-Arms are designed to carry dust, fume, and mist
away from the worker’s breathing zone. Typical
pollutants include fume, vapor, metal dust, weed dust,
and plastic dust.

Normal Operation

arm extension

hood

8 - 12-in
dirty air flow clearance

Connected Exhaust Equipment

Work Area
(Ex: collector, blower and
motor, main duct system, etc.)

Unit Operation (Bench Mount Arm shown)

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 Donaldson Company, Inc.

Structure and Function Inspection on Arrival

Ex-Arm major components: 1. Inspect equipment and parts on delivery
• Swivel 2. Report any damage to the delivery carrier.
• Joints (connector, hose section, clamps) 3. Request a written inspection report from the Claims
Inspector to substantiate any damage claim.
• Upper pipe and lower pipe (with damper, handle, and
outer joint for hood maneuver) 4. File claims with the delivery carrier.
• Hood 5. Compare equipment and parts received with
description of product ordered.
• Gas spring
6. Report incomplete shipments to the delivery carrier
The swivel allows the arm to rotate 360° around its
and your Donaldson Torit representative.
vertical axis - easing hood handling and arm positioning.
7. Remove crates and shipping straps. Remove loose
Note: To limit 360° arm rotation, remove bolts and
components and accessory packages before lifting
nuts from the swivel base and reinstall so
parts from truck.
the bolts project upward through the swivel
base. Fasteners will act as a stopper to limit 8. Check for hardware that may have loosened during
arm rotation. shipping.
The swivel and upper pipe and lower pipe are connected 9. Use caution removing temporary covers.
together with flexible hose sections (hose clamps),
which along with the hood creates a ventilation duct
for air extraction. The air intake volume can be adjusted
Installation Codes and Procedures
with the damper located in the lower pipe. Codes may regulate recirculating
filtered air in your facility.
Consult with the appropriate authorities
mid joint
having jurisdiction to ensure compliance
with all national and local codes regarding
upper pipe lower pipe
recirculating filtered air.
Safe and efficient operation of the equipment depends
swivel on proper installation.
Authorities with jurisdiction should be consulted
before installing to verify local codes and installation
hood joint procedures. In the absence of such codes, install
collector according to the National Electric Code,
NFPA No. 70-latest edition and NFPA 91 (NFPA 654 if
combustible dust is present).
hood
gas spring A qualified installation and service agent must complete
upper installation and service of this equipment.
joint
All shipping materials, including shipping covers,
Ex-Arm Components, Overhead Mount Arm shown must be removed from the collector prior to or during
equipment installation.
Failure to remove shipping
materials from the equipment
will compromise performance.
Inspect parts to ensure all hardware is properly installed
and tight prior to operating equipment.

3
 Extraction Arm, 6 and 8-in

Installation Site Selection

Use proper equipment and adopt This equipment can be located on a foundation or
all safety precautions needed for structural framing. It can also be suspended or hung
servicing equipment. from overhead supports. The supports must be adequate
Electrical service or maintenance work must to carry the live load of the collector and installed to
be performed by a qualified electrician and reduce sway or vibration to the collector.
comply with all applicable national and local Provide clearance from heat sources and avoid any
codes. interference with utilities when selecting the location.
Turn power off and lock out electrical Reference the Rating and Specification Information.
power sources before performing service or
maintenance work. Two people may be required to
Do not install in classified hazardous install the Ex-Arm to the blower
atmospheres without an enclosure rated for and motor or mounting brackets.
the application.
Site selection must account for
wind, seismic zone, and other
load conditions when selecting the location for
collectors.
Codes may regulate acceptable locations for
installing dust collectors. Consult with the
appropriate authorities having jurisdiction to
ensure compliance with all national and local
codes regarding dust collector installation.
Equipment must be anchored in a manner
consistent with local code requirements.
Anchors must be sufficient to support dead,
live, seismic, and other anticipated loads.
Consult a qualified engineer for final selection
of anchorage.

Foundations or Support Framing

Prepare the foundation or support framing in the
selected location. Foundation or support framing must
comply with local code requirements and may require
engineering.
Foundation and support framing must be capable of
supporting dead, live, wind, seismic and other applicable
loads. Consult a qualified engineer for final selection of
foundation or support framing.

4
 Donaldson Company, Inc.

Ex-Arm Bolt Hole Pattern Electrical Wiring

The following bolt hole patterns by arm diameter will Electrical installation, service,
assist in the assembly of the Ex-Arm. or maintenance work must
be performed by a qualified electrician and
comply with all applicable national and local
codes.
Turn power off and lock out electrical
power sources before performing service or
maintenance work.
M6x20 bolt
(.25 diameter) Do not install in classified hazardous
in atmospheres without an enclosure rated for
6.3- 6 bolt
7.6 pattern the application.
-in
All electrical wiring and connections, including electrical
grounding, should be made in accordance with the
National Electric Code (NFPA No. 70-latest edition).
Check local ordinances for additional requirements that
6-in Ex-Arm apply.
The appropriate wiring schematic and electrical rating
must be used. See collector’s rating plate for required
voltage.
An electric disconnect switch having adequate amp
M6x20 bolt
(.25 diameter)
capacity shall be installed in accordance with Part IX,
-in 8 bolt Article 430 of the National Electrical Code (NFPA No.
7.9 70-latest edition). Check collector’s rating plate for
pattern
9.7
-in voltage and amperage ratings.
Refer to the wiring diagram for the number of wires
required for main power wiring and remote wiring.

8-in Ex-Arm

Bolt Hole Patterns

5
 Extraction Arm, 6 and 8-in

Standard Equipment
Bench Mount Arm Assembly

1. Remove Ex-Arm extraction arm from packaging and 6. Bolt the hood joint to the hood (see Detail B). If
place on even surface. hood is equipped with a light, follow Hood Light
and Switch Installation instructions in Optional
2. Expand the arm segments at a 45° angle.
Equipment section.
3. Tucking in loose fabric at end of the flex hose, slip
7. Connect the lower pipe hose to the hood (following
flex hose over the swivel and secure with hose
step 4).
clamp.
8. The Ex-Arm is ready to be mounted on wall bracket
4. Bolt end of gas spring to the plate of the upper joint
or collector.
(see Detail A).
5. Connect mid joint hose to upper pipe and lower pipe
(following step 4).

hose
see Detail C

lower pipe

upper pipe
mid joint
Detail C
lower pipe
brace hose

upper hood joint

pipe
brace see Detail B
joint plate
gas spring hood

swivel upper joint

see Detail A
hexagonal hood joint
protection nut washer
side plates gas spring bolt
spring
of joint rod washer nut
nut hood

spacing bush bolt

Detail A Detail B

Bench Mount Arm Assembly

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 Donaldson Company, Inc.

Overhead Mount Arm Assembly

1. Remove Ex-Arm extraction arm from packaging and 6. Connect mid joint hose to upper pipe and lower pipe
place on even surface. (following step 5).
2. Expand the arm segments at a 45° angle. 7. Bolt the hood joint to the hood (see Detail C). If
3. Attach the swivel and support to the plate of the hood is equipped with a light, follow Hood Light
upper joint (see Detail A). and Switch Installation instructions in Optional
Equipment section.
4. Tucking in the loose fabric at the end of the flex
hose, slip flex hose over the swivel and secure with 8. Connect the lower pipe hose to the hood (following
hose clamp. step 5).
5. Bolt end of the gas spring to the plate of the upper 9. The Ex-Arm is ready to be mounted on a wall bracket
joint (see Detail B). or collector.

see Detail D

lower pipe

upper pipe
mid joint
Detail D

swivel lower pipe

hose
brace

upper pipe hood joint see Detail C

support brace

see Detail A gas spring hood

joint plate
upper joint

see Detail B
hexagonal nut hexagonal hood joint
protection nut washer
spring bolt
washer side plates gas spring spring
support of joint rod nut
plates washer
of the nut hood
joint

bolt spacing bush bolt

Detail A Detail B Detail C

Overhead Mount Arm Assembly

7
 Extraction Arm, 6 and 8-in

Electrical Connection
Electrical installation, service 3. Install conduit and wire from the power source to
or maintenance work during the extraction arm.
installation must be performed by a qualified
4. Using the below wiring diagram or referencing the
electrician and comply with all applicable
electrical control box, make wiring connections to
national and local codes.
the blower motor and the light and switch cable.
Turn power off and lock out electrical power
5. In grounded systems, connect neutral to control
sources before performing installation, service,
box to L2 in the electrical control box. See Single
or maintenance work.
Phase Wiring, Three-Phase Wiring, and Control Box
Do not install in classified hazardous Component Layout.
atmospheres without an enclosure rated for
the application.

1. A fused-disconnect with fuses and electrical

connections of adequate capacity are customer
supplied.
2. Mount the control box in a convenient location.

DISC
DISC 1FU
1FU L1
L1 1M 10.L
2FU
1M 10.L L2 1M
2FU 1M 10.L
L2 1M 208/230/380/460/575 3FU
1M 10.L L3 Blower
110/220/60 1M 10.L
Blower Motor
GROUND 208/230/380/460/575
Motor

1M
ICR 10.L 3A 120/60/1
110/220 VAC
1M
ICR 10.L
120 VAC
12 VAC
ICR
10A

12 VAC
10A
BLACK

WHITE
RED

BLACK

WHITE

Halogen Lamp
RED

SWI 12 VAC/75 W

Halogen Lamp
SWI 12 VAC/75 W

Wiring by Donaldson
Wiring by Donaldson
Wiring by Others
Wiring by Others

Single Phase Typical Wiring Diagram Three Phase Typical Wiring Diagram

8
 Donaldson Company, Inc.

transformer
220/440-120 VAC w/fuse
208-120 VAC
transformer 575-120 VAC
120-12 VAC 380/440-120 VAC w/fuse

fuse MDX 3 amp

relay 12 VAC 125 VAC
10A SPDT
contactor
starter

10 amp fuse
heated motor
overload protection

Control Box Assembly

Hood Light and Switch Installation

The optional hood with 12 V halogen light is controlled by

a switch on the Ex-Arm hood.
1. Discard wiring included with hood.
2. Replace with supplied wiring assembly.
3. Install light bulb in hole (socket) located in the hood
impacter plate.
4. Squeeze and release metal retention ring over bulb
to secure in place.
5. Connect lamp to lamp socket.
6. Attach connectors to switch.
7. Feed wire through ex-arm by entering the hood and
exiting through the hole in the swivel.
8. Attach hood to lower pipe hood joint hose.

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 Extraction Arm, 6 and 8-in

Preliminary Start-Up Check

Instruct all personnel on safe use and maintenance 5. Check that all optional accessories are installed
procedures. properly and secured.
Electrical work during 6. Turn power ON at source.
installation, service or
7. Turn fan motor ON.
maintenance must be performed by a qualified
electrician and comply with all applicable
national and local codes. Start-Up
Turn power off and lock out electrical 1. Set the hood into position within 8 to 12-in from the
power sources before performing service or welding arc.
maintenance work.
Note: Welding chippings could affect the hood
Check that the collector is clear and free of all and the hood suction could interrupt the
debris before starting. gas-coating (CO2, argon). It is important for
Do not install in classified hazardous the hood to effectively capture fume without
atmospheres without an enclosure rated for obstructing the user, which typically requires
the application. the hood to be 8 to 12-inches of the welding
arc.
1. Check all electrical connections for tightness and
contact. 2. Adjust the air intake volume with the damper lever
to control the efficiency of dust and fume extraction
2. Check for proper rotation as noted on the fan and/or
without causing excessive draught.
hopper discharge device housing.
3. Reposition the hood and adjust the damper as
To reverse rotation, single-phase power supply:
required during operation to maintain fume capture.
Follow manufacturer’s instructions on the motor’s
nameplate. 4. After the work is completed, reposition the extraction
arm in the operational position or the home (folded)
To reverse rotation, three-phase power supply:
position if obstruction is a problem.
Switch any two leads on the motor junction box.
5. Stop the extraction fan (if the device works in a
Do not look into fan outlet to
ventilation system — close the appropriate
determine rotation. View the fan
damper).
rotation through the back of the motor.
Check that the exhaust plenum is free of tools
or debris before checking blower/fan rotation.
Stand clear of exhaust to avoid personal injury.
Do not interchange a power lead with the
ground wire. Severe personal injury and/or
property damage may result.
3. Check and remove all loose items in or near the inlet
and outlet of the collector.
4. Check that all remote controls and solenoid
enclosures (if applicable) are properly wired and all
service switches are in the OFF position.

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 Donaldson Company, Inc.

Maintenance Information
Instruct all personnel on safe use and maintenance General Maintenance
procedures.
• Lubricate the swivel every 3 months with solid
Use proper equipment and adopt grease (lubrication nipple in the swivel flange).
all safety precautions needed for • Periodically sprinkle the hood with anti-splatter fluid
servicing equipment. to prevent welding chippings from gluing to hood.
Use appropriate access equipment and • Review entire Ex-Arm annually for wear.
procedures. Note the standard collector is not
equipped with access platforms unless noted
on the specification drawings.
Electrical service or maintenance work must
be performed by a qualified electrician and
comply with all applicable national and local
codes.
Turn power off and lock out electrical
power sources before performing service or
maintenance work.
Do not install in classified hazardous
atmospheres without an enclosure rated for
the application.

Operational Checklist

1. Check arm tension

2. Check flexible duct connections
3. Check joint and friction pads for wear
4. Check bearing sand pivot for wear
5. Check damper and damper handle for wear

11
 Extraction Arm, 6 and 8-in

Arm Adjustment

The Ex-Arm extraction arms will The frictional brakes can be adjusted by increasing
not pose any safety concerns or reducing the tension of the nuts on the frictional
if correctly mounted to the wall or another elements. Tighten the nuts to increase the frictional
building element. movement and release the nuts to reduce the tension
Follow proper installation guidelines in this using a 17 or 13 mm wrench where appropriate.
manual. Improper installation could cause The friction brake adjustment must be performed as
detachment and/or serious personal injury and/ mentioned above to ensure arm stability and self-
or property damage. Leave the extraction arm supporting. Proper adjustment keeps the arm stable
in the last operational position or in the folded and prevents excessive resistance during arm position
position. changes.

The Ex-Arm is designed for safe and reliable operation Adjust tension in locations shown below.
without continuous servicing and special handling.
The adjustment of the Ex-Arm is done by regulating the
frictional brakes. The frictional brakes placed in each
joint give balance and self-supporting properties and
easy handling during operation.

tension nuts
(arm adjustment)

Overhead Mount Arm

tension nuts
(arm adjustment)

Bench Mount Arm

Arm Adjustment

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 Donaldson Company, Inc.

Optional Equipment
The optional wall mounting brackets allow the extraction 2. Connect the Ex-Arm assembly to the bottom part of
arm to be mounted to an optional blower and motor or the wall bracket using supplied hardware.
directly to ductwork (duct outlet required).
3. Fasten duct connector (if required) to the top of the
Overhead Mount Installation wall bracket hardware)

Failure to mount the wall bracket 4. Ground the arm by connecting the points of contact
correctly can result in arm with copper-strand wire with a suitable cross-
assembly collapse, personal injury or property sectional area. Attach to the equipment to ensure
damage. electrical continuity.

Anchor bolts must be sized to support loads up Failure to ground the arm
to 500 lbs. properly can result in electrical
shock. Install a proper ground to ensure
Use appropriate lifting equipment and adopt personal safety
all safety precautions needed for moving and
handling the equipment. Electrical service or maintenance work must be
performed by a qualified electrician and comply
A forklift is recommended for unloading, with all applicable national and local codes.
assembly, and installation of the extraction
arm. Turn power off and lock out electrical
Location must be clear of all obstructions, such power sources before performing service or
as utility lines or roof overhang. maintenance work.

1. Leveling the wall bracket with the floor, fasten the Do not install in classified hazardous
wall bracket using customer-supplied anchor bolts. atmospheres without an enclosure rated for
Anchor bolts must be sized to support loads up to the application.
500-lb.

mounting surface (reference)

outlet collar

wall bracket

hardware provided with Ex-Arm

13
 Extraction Arm, 6 and 8-in

Bench Mount Installation

1. Fasten adapter ring to the collector using the 5. Apply sealant onto the blower housing’s motor mount
hardware provided. surface.
2. Attach arm to adapter ring using hardware provided. 6. Attach the motor mount plate to the motor and fasten
using four 3/8-16 x 3/4-in bolts and lock washers.
3. If hood is equipped with a light, follow Hood Light
Torque to 20 ft/lbs.
and Switch Installation instructions.
7. Position the blower wheel on the motor shaft.
Blower and Motor Installation
8. Position the blower wheel so there is 1/16-in
1. Place the blower adapter on the wall bracket. clearance between the blower wheel and the blower
inlet ring located inside the blower housing.
2. Position the blower adapter ring on the opposite side
of the wall bracket. 9. Insert the key into the blower wheel and motor shaft
key slot. Tighten the two setscrews to secure the
3. Align the bolt patterns of the blower adapter and
blower wheel to the motor shaft.
the wall bracket to the adapter ring weld nuts and
secure using four 5/16-18 x 1-in bolts. 10. Install the motor, blower wheel, and motor mount
plate assembly on the blower housing by aligning
4. Position the blower housing on the top of the blower
the bolt patterns. Fasten using eight, 1/4-20 x 3/4-in
adapter using four 5/16-18 x 1-in bolts, lock washers,
screws.
and hex nuts.

2 Hp Motor (specify voltage)

bolt 1/4-in - 20 x 3/4-in long

3/8-in lock washer motor mounting plate

blower wheel
3/8-in - 16 x 3/4-in long bolt
.0625
5/16-in - 18 x 1-in long bolt
sealant
blower inlet ring
blower housing

5/16-in washer sealant

blower adapter

5/16-in nut

standard bracket
mounting surface

Blower and Motor

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Donaldson Company, Inc.

Troubleshooting
Problem Probable Cause Remedy
Extraction arm is falling Improperly adjusted frictional Increase the tension upon frictional discs of the
(out of position) brake brake in the joint by tightening the adjustment nuts.
Drop in the air suction Improper impeller rotation of the Change the phase connection sequence (3-phase
rate at the increased extraction fan motor).
noise level

Fan blower and motor do Electrical supply circuit down Check the electrical supply circuit for proper output
not start voltage or fuse, circuit breaker fault.
Fuses have blown in the control Carefully disconnect the electrical power to the
box Ex-Arm. Remove the electrical control box cover to
access fuse(s) on the control panel. With a volt ohm
meter, check for blown fuses in the electrical control
box and disconnect. If fuses are blown, replace fuse
or fuses. See Electrical Connection section.
Failed transformer for 1 phase Using a volt ohm meter check the input voltage on
system terminals H1 and H4, (it should be 120 volts AC.) Next
check output voltage on X1 and X2 terminals, (it
should be 12 volts AC). If there is no output voltage,
replace the transformer. See Electrical Connection
section and the Replacement Parts List.
Failed transformer for 3 phase Using a volt ohm meter check the input voltage on
system terminals H1 and H4 on the primary transformer
feedlines. Look at the voltage rating on the
transformer that is rated for the input voltage. Check
that the proper shorting bars or jumper wires have
been installed per input voltage requirements. Next
check the fuse on the X1 terminal, and if it is blown
out, replace with a MDX 3 amp fuse. Then check the
output voltage on X1 and X2 terminals (it should be
120 volts AC). If there is no output voltage, replace
the transformer. See Electrical Connection section.
Relay 12 volt AC failure With the Ex-Arm hood switch on, check with a
volt ohm meter for 12 volts AC input to the relay.
Next check for 120 volts AC input and output on
the relay socket terminals. If there is no voltage
output, replace the 12 volt AC relay. See Electrical
Connection section and the Replacement Parts List.
Heater motor overload With the Ex-Arm hood switch on, check with a
protection failure volt ohm meter for voltage inputs and outputs on
contactor through the heater terminals. Be sure
before testing that the heater thermal protection has
cooled to reset. If there is no voltage output, replace
the heater overload relay. See Electrical Connection
section and the Replacement Parts List.

15
 Extraction Arm, 6 and 8-in

Problem Probable Cause Remedy

Fan blower and motor Starter contactor failure With the Ex-Arm hood switch on, check with a volt
start do not start ohm meter for 120 volts AC input to starter coil.
If there is no input, check the thermal overload
protection. Next check for supply voltage input and
output out of the contactor terminals. If 120 volt
AC input to coil relay is okay on starter contactor
and it still does not function, replace the starter
contactor. See Electrical Connection section and the
Replacement Parts List.
Inadequate supply circuit Check for sufficient amperage to run the Ex-Arm.
Reference motor manufacturer’s nameplate for
amperage and voltage requirements. Also check to
see that there is not too much other equipment on
the supply circuit.
Starter kicks out Excessive airflow for blower Check that all the flexible ducting is installed onto the
and motor joint assemblies and that it is not torn or damaged. If
ducting is damaged, replace it. See Service section
and the Replacement Parts List.
Incorrect wire size on the supply Check for proper wire size on electrical supply lines.
circuit Too small of a supply wire will cause motor overload.
Rewire per local and national codes.
Incorrectly wired motor Wiring is incorrect per motor manufacturer’s wiring
diagram. Reference motor manufacturer’s wiring
diagram and correct wiring per supply voltage.
Insufficient airflow at Incorrect blower and motor Check blower motor rotation by looking down
hood rotation from the top of the motor. The rotation should be
clockwise. Also reference rotation sticker on the
blower housing. To correct blower rotation (3 phase
only), change any two of the three phase wire supply
leads. On the single phase motors, reference the
motor manufacturer’s wiring diagram.
Ex-Arm damper is closed Locate the Ex-Arm damper control handle and move
the handle to be in line with the rigid ducting. This
will be the wide open setting.
Obstruction in ducting or hood Check the Ex-Arm, hood, ducting, flex duct, and
exhaust ducting (if used) for blockage. Remove
any debris that is blocking airflow. See the Service
section.

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Donaldson Company, Inc.

Troubleshooting
Problem Probable Cause Remedy
Insufficient airflow at Flexible ducting is torn or Check the flexible ducting and replace any damaged
hood collapsed, or the rigid ducting is parts. Check the rigid ducting on the Ex-Arm or
broken or collapsed exhaust ducting (if applied) for cracks or collapsed
section(s). See the Replacement Parts List.
To much ducting, elbows Consult with your local Donaldson representative.
applied to the exhaust of the
Ex-Arm
Friction joints not adjusted Adjust tension nuts on arm per Arm Adjustment
properly(too loose or tight) or section.
are damaged
Ex-Arm light does not Light bulb burned out or there See Service section and the Replacement Parts List.
light are loose wire connections
Note: Do not touch the halogen light bulb when
performing service work, as it will significantly
shorten the bulb life.

17
 Extraction Arm, 6 and 8-in

Service Notes
Date Service Performed Notes

18
Donaldson Company, Inc.

Service Notes
Date Service Performed Notes

19
 The Donaldson Torit Warranty

Donaldson warrants to the original purchaser that the major structural components of the goods will be free
from defects in materials and workmanship for ten (10) years from the date of shipment, if properly installed,
maintained and operated under normal conditions. Donaldson warrants all other Donaldson built components
and accessories including Donaldson Airlocks, TBI Fans, TRB Fans, Fume Collector products and Donaldson built
Afterfilters for twelve (12) months from date of shipment. Donaldson warrants Donaldson built filter elements to
be free from defects in materials and workmanship for eighteen (18) months from date of shipment. Donaldson
does not warrant against damages due to corrosion, abrasion, normal wear and tear, product modification,
or product misapplication. Donaldson also makes no warranty whatsoever as to any goods manufactured or
supplied by others including electric motors, fans and control components. After Donaldson has been given
adequate opportunity to remedy any defects in material or workmanship, Donaldson retains the sole option to
accept return of the goods, with freight paid by the purchaser, and to refund the purchase price for the goods
after confirming the goods are returned undamaged and in usable condition. Such a refund will be in the full
extent of Donaldson’s liability. Donaldson shall not be liable for any other costs, expenses or damages whether
direct, indirect, special, incidental, consequential or otherwise. The terms of this warranty may be modified
only by a special warranty document signed by a Director, General Manager or Vice President of Donaldson.
To ensure proper operational performance of the equipment, use only genuine Donaldson replacement parts.
THERE EXIST NO OTHER REPRESENTATIONS, WARRANTIES OR GUARANTEES EXCEPT AS STATED IN THIS
PARAGRAPH AND ALL OTHER WARRANTIES INCLUDING MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE, WHETHER EXPRESS OR IMPLIED ARE HEREBY EXPRESSLY EXCLUDED AND DISCLAIMED.

Parts and Service

For genuine Donaldson replacement filters and parts, call the Parts Express Line. For faster service,
have unit’s model and serial number, quantity, part number, and description available.

Donaldson Company, Inc. 800-365-1331 USA

Torit 800-343-3639 within Mexico
PO Box 1299 +52 (449) 300 24 42 Latin America
Minneapolis, MN 55440-1299
U.S.A. donaldsontorit@donaldson.com
donaldsontorit.com

Donaldson Company, Inc. is the leading designer and manufacturer of dust, mist, and fume collection
equipment used to control industrial-air pollutants. Our equipment is designed to help reduce
occupational hazards, lengthen machine life, reduce in-plant maintenance requirements, and
improve product quality.

© 2006 Donaldson Company, Inc. IOM AD3661601 (ENG), Revision 2

Printed in USA October 2016