Donaldson Torit Unimaster UMA 40 User manual

This manual contains specific precautions related to worker safety.The hazard alert image denotes
safety related instructions and warnings in this manual. DO NOT operate or perform maintenance on this
collector until you have read and understood the instruction and warnings contained within this manual.
Unimaster®Dust Collector
UMA 40, 70, 100, 150 and 250 Built After August 2005
UMA 450 and 750 Built After March 2006
Installation and Operation Manual
Installation, Operation, and Service Information
IOM AD3547701 (ENG)
Revision 4
English
Master Language
UMA 250
Bin Vent Base
(H Type)
UMA 250
Bin Base
UMA 250
55-Gallon Drum Base

Donaldson Company, Inc.
The Safety Alert Symbol indicates a hazardous situation which, if not avoided could
result in death or serious injury. Obey all safety messages following this symbol to
avoid possible injury or death. The possible hazards are explained in the associated
text messages.
CAUTION, used with the safety alert symbol, indicates a hazardous situation
which, if not avoided, could result in minor or moderate injury.
NOTICE indicates a potential situation or practice which is not expected to result
in personal injury, but which if not avoided, may result in damage to equipment.
This manual has been supplied to assist with the installation, operation and maintenance for the collector purchased.
Please read the manual before installing, operating, or performing maintenance on the collector as it contains
specific precautions for worker safety. It is the owner’s responsibility to ensure that this manual is available for use by
installers, operators and maintenance personnel that will be working with this collector. This manual is the property of
the owner and should be left with the collector when installation has been completed. DO NOT operate this collector
until you have read and understood the instructions and warnings located in the installation and operation manual.
For additional copies of this manual, contact Donaldson Torit
i
IMPORTANT NOTES

ii
Magnehelic®is a registered trademark of Dwyer Instruments, Inc.
Unimaster Dust Collector, UMA 40 through 750
Contents
IMPORTANT NOTES .................................................................i
Safety Communication............................................................1
Description................................................................................2
Purpose and Intended Use ....................................................2
Operation...................................................................................3
Inspection on Arrival...............................................................4
Installation Codes and Procedures ......................................4
Installation.................................................................................4
Foundations or Support Framing .......................................4
Collector Location................................................................5
Hoisting Information ............................................................5
Standard Equipment................................................................5
Hopper and Leg Installation ...............................................5
Provisional Anchor Bolt Recommendations....................6
Collector Installation............................................................6
Electrical Wiring...................................................................8
Inlet Assembly ......................................................................8
Preliminary Start-Up Check .................................................12
Maintenance Information.....................................................13
Operational Checklist ........................................................13
Filter Removal and Installation.........................................13
Optional Equipment................................................................15
Magnehelic®Gauge ..........................................................15
Caster Base ........................................................................16
Static Bonding for Filters ..................................................16
Explosion Vent ....................................................................17
Troubleshooting......................................................................18
Product Information...............................................................19
Service Notes.........................................................................19
Donaldson Industrial Air Filtration Warranty ....................20

1
Donaldson Company, Inc.
Improper operation of dust collectors and/or dust control systems may contribute to conditions in a work
area or facility which could result in severe personal injury, and product or property damage. All dust
collection equipment should be used only for its intended purpose and should be properly selected and sized
for its intended use.
Process owners have important responsibilities relating to identifying and addressing potential hazards in
their processes. When the potential for handling combustible dust exists within a process the process owner
should include combustion hazards in their risk management activities and should comply with applicable
codes and standards related to combustible dust.
Electrical installation must be performed by a qualified electrician.
This equipment is not designed to support site ducts, piping, or electrical services. All ducts, piping, or
electrical services must be adequately supported to prevent injury and/or property damage.
Site selection must account for wind, seismic zone, and other load conditions.
Equipment may reach peak sound pressure levels above 80 dB (A). Noise levels should be considered when
selecting collector location.
Combustible Dust Hazards
Among other considerations, the current NFPA standards require owners whose processes involve potentially
combustible materials to have a current Dust Hazard Analysis, which can serve as the foundation for their process
hazard mitigation strategy. Mitigation may include but is not limited to:
• Prevention of all ignition sources from entering any dust collection equipment.
• Selection and implementation of fire and explosion mitigation, suppression, and isolation strategies
appropriate for the risks in their process.
• Development and use of work practices to maintain safe operating conditions, and to ensure combustible dust
does not accumulate within their plant or process equipment.
Donaldson designs, manufactures, and sells industrial air filtration products for a wide variety of applications. Some
applications may include processes or materials with inherent fire and explosion hazards. Donaldson is neither an
expert nor a certified consultant in fire, spark, or explosion detection, suppression, or control. Donaldson does not
provide engineering consulting services related to process or dust hazard analyses, or code and standard compliance.
Complying with applicable codes and standards and managing the risks associated with the process or materials
remains the responsibility of the process owner/operator. Donaldson may provide referrals to consultants, suppliers
of equipment or services related to the detection and/or mitigation of sparks, fires and/or explosions, but Donaldson
does not assume responsibility for any such referrals, nor does Donaldson assume any liability for the fitness of a
mitigation strategy or product for a particular installation or application. The process owner’s final selection of dust
collectors and risk mitigation strategies should be based on the outcome of a Dust Hazard / Process Hazard Analysis
performed by the process owner. Although early engagement of a dust collector supplier provides helpful insights on
the availability and features of various products, process owners should consult with a combustible dust expert and/or
a process safety expert before making actual product and mitigation strategy selections.
Donaldson recommends that all industrial air filtration system designs be reviewed and approved by an expert
consultant who is responsible for the integrity of the system design and compliance with applicable codes and
standards. It is the process owner’s responsibility to understand the risks in their process and mitigate those risks in
accordance with all applicable laws, regulations and standards, including those published by the NFPA. Donaldson
also recommends that proper maintenance and housekeeping procedures and work practices be evaluated,
developed, and followed to maintain any industrial air filtration products in safe operating condition.
Many factors beyond the control of Donaldson can affect the use and performance of Donaldson products in a
particular application, including the conditions under which the product is used. Since these factors are uniquely
within the user’s knowledge and control, it is essential the user evaluate the Donaldson products to determine whether
the product is fit for the particular purpose and suitable for the user’s application. All products, product specifications,
and data (airflow, capacity, dimensions, or availability) are subject to change without notice, and may vary by region or
country.
Safety Communication

Unimaster Dust Collector, UMA 40 through 750
2
Description
The Unimaster series dust collectors are self-contained,
intermittent-duty dust collectors with bag style filters.
This durable collector provides effective cleaning in a
variety of industrial settings.
This collector can be used as a collector complete with
legs, hopper and bin or 55 gallon drum for collecting the
dust, or it can be configured without legs and hopper to
be used for bin venting applications.
Standard sizes range from 43 to 753 sq ft of filter area and
features a UMA controller to control the filter cleaning
operation. Other options include explosion relief vents,
static grounding, weather hoods and caster frames.
Purpose and Intended Use
Misuse or modification of this
equipment may result in personal
injury.
Do not misuse or modify.
The Unimaster dust collectors are used to separate solid
particulate from an airstream as part of a manufacturing
process. It is an ideal choice for intermittent operations
in plant processes. Several small collectors can be
installed at dust generation sites throughout the plant
resulting in total dust capture and flexibility. Some typical
installations include blending/mixing, abrasive blasting,
cleaning, cutting, drilling, grinding, milling, packing,
polishing, sanding, and sawing.

3
Donaldson Company, Inc.
Operation
During normal operation, dust-laden air enters the
collector through the dirty-air inlet. The velocity is
reduced and natural pre-separation, caused by the
effects of gravity, takes place and heavier particulate
falls directly into the collection bin or hopper. Fine
particles collect on the outside surface of the filter bag
and filtered air passes to the center of the bag and
discharges through the clean-air outlet.
The Unimaster is an intermittent-duty collector, which
means that cleaning starts when the fan is turned OFF
and the appropriate fan run-down time is complete.
The solid-state timer automatically starts the cleaning
sequence 75-seconds after the fan is turned OFF. This is
the fan run-down time. Power to controls must remain
ON to operate the cleaning mechanism. The vibration
motor starts and filter cleaning begins for a preset time
of 30-seconds.
Collector Operation
junction box
fan
clean-air
plenum/
silencer
clean-air outlet
filter bags and
inserts
dirty-air
plenum
shaker
motor
dirty-air inlet
Normal Operation*
*Doors not shown on collector for illustrative purposes
dust storage
container
hopper
Filter Cleaning Operation*

Unimaster Dust Collector, UMA 40 through 750
4
Inspection on Arrival
1. Inspect collector upon delivery.
2. Report any damage to the delivery carrier.
3. Request a written inspection report from the Claims
Inspector to substantiate any damage claim.
4. File claims with the delivery carrier.
5. Compare collector received with description of
product ordered.
6. Report incomplete shipments to the delivery carrier
and your Donaldson Torit representative.
7. Remove crates and shipping straps. Remove loose
components and accessory packages before lifting
collector from truck.
8. Check for hardware that may have loosened during
shipping.
9. Use caution removing temporary covers.
Installation Codes and Procedures
Codes may regulate recirculating
filtered air in your facility.
Consult with the appropriate authorities
having jurisdiction to ensure compliance
with all national and local codes regarding
recirculating filtered air.
Safe and efficient operation of the collector depends on
proper installation.
Authorities with jurisdiction should be consulted
before installing to verify local codes and installation
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).
A qualified installation and service agent must complete
installation and service of this equipment.
All shipping materials, including shipping covers, must
be removed from the collector prior to or during collector
installation.
Failure to remove shipping
materials from the collector will
compromise collector performance.
Inspect collector to ensure all hardware is properly
installed and tight prior to operating collector.
Installation
Use proper equipment and adopt
all safety precautions needed for
servicing equipment.
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 all power before
performing service or maintenance work.
Do not install in classified hazardous
atmospheres without an enclosure rated for
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 mist collector installation.
Collectors 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.
The collector is suitable for either indoor or outdoor
installations. Reference the Rating and Specification
Information.

5
Donaldson Company, Inc.
Portable collectors may require special installation
accommodations.
Hoisting Information
Failure to lift the collector
correctly can result in severe
personal injury and/or property damage.
Use appropriate lifting equipment and adopt
all safety precautions needed for moving and
handling the equipment.
A crane or forklift and qualified operator are
recommended for unloading, assembly, and
installation of the collector.
Location must be clear of all obstructions, such
as utility lines or roof overhang.
Use spreader bars to prevent damage to collector’s
casing.
Check the Specification Control drawing for weight and
dimensions of the collector and components to ensure
adequate crane capacity.
Allow only qualified crane or forklift operators to lift the
equipment.
Refer to applicable OSHA regulations and local codes
when using cranes, forklifts, and other lifting equipment.
Lift collector and accessories separately and assemble
after collector is in place.
Use drift pins to align holes in section flanges during
assembly.
Use all lifting points provided.
Use clevis connectors, not hooks, on lifting slings.
Collector Location
Donaldson Torit equipment is not
designed to support site installed
ducts, interconnecting piping, or electrical
services. All ducts, piping, or electrical
services must be adequately supported to
prevent severe personal injury and/or property
damage.
When hazardous conditions or materials are
present, consult with local authorities for the
proper location of the collector.
Dust collection equipment may reach peak
sound pressure levels above 80 dB (A). Noise
levels should be considered when selecting
collector location.
Locate the collector to ensure easy access to electrical
supply, to simplify solids collection container handling
and routine maintenance, and to ensure the straightest
inlet and outlet ducts.
Provide clearance from heat sources and avoid any
interference with utilities when selecting the location.
Standard Equipment
The collector has a high center-
of-gravity and may overturn if not
secured properly.
Secure the collector to the lifting device.
Use care when moving the collector.
Unimaster dust collectors are delivered partially
assembled. Collector installation, optional equipment
assembly, and electrical connections are completed at
the job site.
Anchors must comply with local
code requirements and must be
capable of supporting dead, live, wind, seismic,
and other applicable loads.
Anchor sizes shown are provisional, as final
anchor sizing will depend on jobsite load
conditions, collector location, foundation/
framing design variables and local codes.
Consult a qualified engineer for final selection
of anchors.
Hopper and Leg Installation
Reference Typical Foundation Anchor and leg assembly
drawing shipped with the collector prior to starting
assembly.

Unimaster Dust Collector, UMA 40 through 750
6
Provisional Anchor Bolt Recommendations
1. Consider Hilti HIT-HY 200 Anchor System or
equivalent. Quantity of anchor bolts should match the
number of holes provided in the base plates.
2. Anchor diameter is typically 1/8-in less than
baseplate hole diameter.
3. Corrosive environment or outdoor installation may
require stainless steel anchors.
Typical Installation, UMA 40 to 70 Bin
Collector Installation
UMA 40 to 70 (Hopper and 55-Gallon Drum
Base Styles)
1. Prepare the foundation or support framing in the
selected location. Locate and install anchors.
2. Lift collector into position over the anchor bolts and
lower slowly.
3. Level collector horizontally and vertically, using steel
shims under legs where required.
4. Secure collector to anchor bolts using customer-
supplied hardware.
UMA 70
Bin Base
Typical Foundation Anchor
Anchor should project a
minimum of 1 3/4-in and
account for nut, washer,
base plate and shims/
grout.
Embedment depth
(suitable for the
physical properties of
the foundation).

7
Donaldson Company, Inc.
UMA 100 to 750 orTwo-Piece Shipments
(Hopper and 55-Gallon Drum Base Styles)
1. Prepare the foundation or support framing in the
selected location. Locate and install anchors.
2. Lift base, leg, and hopper assembly into position over
the anchor bolts and lower slowly.
3. Level collector horizontally and vertically, using steel
shims under legs where required.
4. Secure collector to anchor bolts using customer-
supplied hardware.
Typical Installation, UMA 100 to 750 or Two-Piece Shipment
5. Remove the lifting brackets from the top of the base
assembly.
6. Apply two strips of sealant or caulk to the hopper’s
top flange: one toward the inside of the bolt pattern
and one toward the outside of the bolt pattern.
7. Lift collector section into position over the base
assembly and lower slowly.
8. Use drift pins to align holes.
9. Secure with bolts, washers, and hex nuts supplied.
Tighten to form an airtight seal.
apply sealant or caulk
toward inside and
outside of bolt pattern
collector section
base, leg and
hopper assembly

Unimaster Dust Collector, UMA 40 through 750
8
The UMA controller operates the fan and shaker in the
proper sequence to ensure effective filter cleaning. The
controller contains an across-the-line fan starter and an
across-the-line shaker motor starter.
1. Mount the controller in a convenient accessible
location, free of vibration and temperature extremes.
Do not mount the controller
directly to the collector.
Mechanical vibration can damage the control.
2. Using the wiring diagram supplied with the controller,
connect the power lead from a customer-supplied
disconnect switch to the terminal block inside the
controller, complying with all applicable codes for
motor branch circuits.
3. Install conduit from the controller to the junction box
located on the side of the collector. Use conduit and
fittings compatible with the rating of the controller’s
enclosure.
4. Make the connections from the manual motor
protector inside the controller to the terminal block in
the junction box.
UMA Controller
The UMA Controllers are designed to work with three-
phase, 50- or 60-Hz power supplies or optional single-
phase power.
Inlet Assembly
All models are shipped with the inlet specified at the
time of order. Side inlets are not interchangeable with
back inlets. Contact Donaldson if additional changes are
necessary.
1. Remove the inlet blank from the specified location.
2. Replace damaged sealant if necessary.
3. Secure inlet to collector using the hardware
removed in Step 1.
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
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
capacity shall be installed in accordance with Part IX,
Article 430 of the National Electrical Code (NFPA No.
70-latest edition). Check collector’s rating plate for
voltage and amperage ratings.
Refer to the wiring diagram for the number of wires
required for main power wiring and remote wiring.
Mount controller outside the influence area of any
explosion relief panels, if present.
Electrical installation, 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 all power before
performing service or maintenance work.
Do not install in classified hazardous
atmospheres without an enclosure rated for
the application.
Electrical Wiring

9
Donaldson Company, Inc.
Operation
Start
Press START button.
Fan contactor M1 is energized, timer module sets,
and the fan motor starts. Average operating period
for fan is 4 hours.
Clean
Press CLEAN button.
Fan contactor M1 is de-energized and the timer is
energized.
After approximately 75-seconds, the shaker motor
contactor M2 is energized and the shaker motor runs
for approximately 30-seconds.
Typical Wiring Diagram, Three-Phase Power Supply
Shaker motor contactor is de-energized and the
timer resumes inactive status.
Note: Before a cleaning cycle can start by
pressing the CLEAN button, the M1 fan
contactor must have been energized for at
least 30-seconds.
In the event of a power supply failure during a cycle,
an internal safety feature ensures the controller
automatically resets ready for the fan to be restarted.
Reapplying power does not require the cycle to be
completed.

Unimaster Dust Collector, UMA 40 through 750
10
230-Volt, Single Phase Power Supply Wiring Diagram

11
Donaldson Company, Inc.
115-Volt, Single Phase Power Supply Wiring Diagram

Unimaster Dust Collector, UMA 40 through 750
12
Typical Start-Up Sequence
Press the Start button on the controller panel to start the
collector.
Typical Shut-Down Sequence
1. Press the Clean button on the controller.
2. The fan stops when fan run-down cycle is complete.
3. The cleaning cycle starts and when finished, the
collector turns OFF.
Instruct all personnel on safe use and maintenance
procedures.
Electrical work during
installation, service or
maintenance must be performed by a qualified
electrician and comply with all applicable
national and local codes.
Turn power off and lock out all power before
performing service or maintenance work.
Check that the collector is clear and free of all
debris before starting.
Do not install in classified hazardous
atmospheres without an enclosure rated for
the application.
Preliminary Start-Up Check
5. Check and remove all loose items in or near the inlet
and outlet of the collector.
6. Check that all remote controls and solenoid
enclosures (if applicable) are properly wired and all
service switches are in the OFF position.
7. Check that all optional accessories are installed
properly and secured.
8. Turn power ON at source.
9. Turn fan motor ON.
1. Check all electrical connections for tightness and
contact.
2. Check for proper rotation on all motors as described
below.
To reverse rotation, single-phase power supply:
Follow manufacturer’s instructions on the motor’s
nameplate.
To reverse rotation, three-phase power supply:
Switch any two leads on the motor junction box.
Do not look into fan outlet to
determine rotation. View the fan
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. All access panels should be sealed and secure.
4. Check that the dust container is properly sealed and
clamped.
10. Adjust airflow with the exhaust damper.
Excess airflow can shorten filter
life, cause electrical system
failure and fan motor failure.

13
Donaldson Company, Inc.
Filter Removal
1. Turn power to collector OFF. Open or remove the
filter access door.
Lower the retention handles in the bag chamber
(for UMA 40 model size, loosen wing nuts on top of
clean air plenum until filter frame releases from seal
gasket).
3. Slowly remove the filter frame assembly from the
collector.
Note: This may require two people.
4. Remove filter inserts and filter bags. Check for
broken or worn inserts especially at any areas of
filter bag damage and dispose of properly. Replace
any missing or damaged filter inserts.
5. Remove any dust or debris from the dirty-side
tubesheet gasket.
Filter Installation
1. Insert the filter bag into the filter frame placing
individual filter pockets between the locating bars
and fold filter bag collar over the top flange.
2. Place insert edging around sides and bottom edges
of each filter insert.
3. Insert one filter insert into each filter bag pocket.
Instruct all personnel on safe use and maintenance
procedures.
Use proper equipment and adopt
all safety precautions needed for
servicing equipment.
Use appropriate access equipment and
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 all power before
performing service or maintenance work.
Do not install in classified hazardous
atmospheres without an enclosure rated for
the application.
Maintenance Information
Filter Removal and Installation
Use proper safety and protective
equipment when removing
contaminants and filters.
Dirty filters may be heavier than they appear.
Use care when removing filters to avoid
personal injury and/or property damage.
Turn power off and lock out all power before
performing service or maintenance work.
Do not operate with missing or damaged filters.
Operational Checklist
1. Monitor the physical condition of the collector and
repair or replace any damaged components.
Routine inspections will minimize downtime and
maintain optimum system performance. This
is particularly important on continuous-duty
applications.
2. Monitor pressure drop across filters.
Abnormal changes in pressure drop may indicate a
change in operating conditions and possibly a fault
to be corrected.
3. Monitor exhaust.
4. Monitor dust disposal.

Unimaster Dust Collector, UMA 40 through 750
14
Filter Removal and Installation
4. Set filter frame on guide and slowly slide assembly
into collector until the bottom edge of the filter bags
contact ths shaker bar.
Note: Insertion must be in-line with the frame guide.
Inserting at an angle could potentially tear the
tubesheet seal.
5. Insert bag pockets into the shaker bar slots.
6. Push the filter assembly the remaining distance into
the collector and check that all pockets are firmly
seated in the shaker bar.
7. Lift retention handles (for UMA 40 model size, tighten
wing nuts).
8. Replace or close the filter access door and secure.
9. Return power to the collector and resume operation.
filter insert
filter frame
filter bag
UMA-H 250
insert edging
(bottom edging not shown)
UMA 40
wing nuts
(UMA 40 models only)
shaker bar
frame guide
handle

15
Donaldson Company, Inc.
Optional Equipment
Magnehelic Gauge Installation
Magnehelic®Gauge
The Magnehelic is a differential pressure gauge used
to measure the pressure difference between the clean-
air and dirty-air plenums and provides a visual display
of filter change requirements. The high-pressure tap is
located in the dirty-air plenum and the low-pressure tap
is located in the clean-air plenum.
1. Choose a convenient, accessible location on or near
the collector for mounting that provides the best
visual advantage.
2. Plug the pressure ports on the back of the gauge
using two, 1/8-in NPT pipe plugs supplied. Install two,
1/8-in NPT male adapters supplied with the gauge
into the high- and low-pressure ports on the side of
the gauges.
3. Attach the mounting bracket using three, #6-32 x 1/4-
in screws supplied.
4. Mount the gauge and bracket assembly to the
supporting structure using two, self-drilling screws.
5. Thirty-five feet of plastic tubing is supplied and must
be cut in two sections. Connect one section of tubing
from the gauge’s high-pressure port to the pressure
fitting located in the dirty-air plenum. Connect
remaining tubing from the gauge’s low-pressure
port to the fitting in the clean-air plenum. Additional
tubing can be ordered from your representative.
6. Zero and maintain the gauge as directed in the
manufacturer’s Operating and Maintenance
Instructions provided.
collector ref only
plastic tubing
screw
washer mounting panel
high-pressure port
Magnehelic gauge
high pressure ref only
low pressure ref only
two, self-drilling screws
1/8-in NPT x 90° male elbow
low-pressure port

Unimaster Dust Collector, UMA 40 through 750
16
Caster Base
An optional caster base is available for UMA Models 40
to 250.
The optional caster base is not
suitable for use on any UMA
equipped with explosion relief panels.
Static Bonding for Filters
Optional media bonding and grounding components are
available for UMA collectors equipped with antistatic
filter bags.
1. If the collector is ordered with antistatic filter bags,
the grounding lug and internal components are
factory installed.
2. Connect the grounding lug to ground.
Static Grounding
grounding lug
connect to ground
brass bolts
antistatic ground bar
brass bolt
brass nut

17
Donaldson Company, Inc.
Explosion Vent
Personal injury, death, and/or
property damage can result from
material discharge during venting.
The material discharged during the venting of
an explosion must be safely directed outdoors
away from areas occupied by personnel to
reduce risk of personal injury and/or property
damage.
The risk of personal injury and/or property
damage can be minimized or avoided by
locating vented equipment outside buildings
and away from normally occupied areas.
Explosion vents should be inspected regularly
to confirm physical and operational condition.
Replace any damaged parts immediately.
Standard explosion vents are intended for
outdoor installations only.
Unless otherwise noted, the explosion venting
calculations are based on formulas from NFPA-68 for
outdoor applications only, with no duct or obstructions
on the explosion vent panel.
Contact Donaldson Torit for assistance in calculating
specific venting requirements for equipment.
NFPA 68 can provide guidance on both the frequency of
and appropriate details for inspections.