Donaldson Torit WSO 25-4 User manual

WSO Mist Collector
WSO 25-4 and 25-6
Installation and Operation Manual
Installation, Operation, and Service Information
IOM AG8676901 (ENG)
Revision 0
English
Master Language
This manual contains specic precautions related to worker safety. The hazard alert image denotes safety
related instructions and warnings in this manual. DO NOT install, operate, or perform maintenance on this
collector until you have read and understood the instructions, precautions and warnings contained within this
manual.
WSO 25-4
WSO 25-6

IMPORTANT NOTES
i
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.
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 specic 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.

Contents
IMPORTANT NOTES.......................................................................................................................................................................i
1 Safety Communication ..............................................................................................................................................................1
2 Product Description...................................................................................................................................................................3
Standard Equipment...........................................................................................................................................................4
First Stage Filter..........................................................................................................................................................4
Primary Filter...............................................................................................................................................................4
Final Filter (Optional)...................................................................................................................................................4
P-Trap with Optional Y-Strainer ..................................................................................................................................4
Sprinkler Coupling.......................................................................................................................................................4
Options and Accessories....................................................................................................................................................4
Final Filter....................................................................................................................................................................4
Drain Collection Container ..........................................................................................................................................4
Cleaning Controls and Sensors...................................................................................................................................4
3 Operation...................................................................................................................................................................................5
4 Product Service.........................................................................................................................................................................6
Operational Checklist .........................................................................................................................................................6
Filter Replacement .............................................................................................................................................................7
P-Trap Service....................................................................................................................................................................9
P-Trap with Y-Strainer, Screen Cleaning and Removal......................................................................................................9
Options and Accessories..................................................................................................................................................10
Fan Controls..............................................................................................................................................................10
Drain Collection Container ........................................................................................................................................10
Troubleshooting................................................................................................................................................................11
Appendix A - Installation................................................................................................................................................................13
Installation ........................................................................................................................................................................14
Location and Site Selection.......................................................................................................................................14
Delivery and Inspection.............................................................................................................................................14
Unloading and Positioning.........................................................................................................................................14
Support Installation....................................................................................................................................................15
Electrical Wiring.........................................................................................................................................................15
P-Trap Installation .....................................................................................................................................................17
Inlet Plenum Installation ............................................................................................................................................17
Options and Accessories..................................................................................................................................................18
Cleaning Controls and Sensors.................................................................................................................................18
Magnehelic Installation ..........................................................................................................................................18
Damper and Silencer, TBI (WSO Unpowered 25-4 and 25-6)...................................................................................20
Top Mount..............................................................................................................................................................20
Support Brackets, Top Mount.................................................................................................................................20
Sprinkler Coupling.....................................................................................................................................................21
Pre-Wired Collectors ........................................................................................................................................................22
Unwired Collectors ...........................................................................................................................................................22
Start-up / Commissioning .................................................................................................................................................23
Decommissioning Collector..............................................................................................................................................24
Product Information ..........................................................................................................................................................25
Service Notes ...................................................................................................................................................................26
Donaldson Industrial Air Filtration Warranty..............................................................................................................................28
WSO Mist Collector, WSO 25-4 and 25-6
ii
Magnehelic®is a registered trademark of Dwyer Instruments, Inc.

1
Donaldson Company, Inc.
1 Safety Communication
Improper operation of mist collectors and/or mist 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 mist 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 mist 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 mist.
Electrical installation must be performed by a qualied 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.
Most mists present safety and health hazards that require precautions. Wear eye, respiratory, head and other
protection equipment suitable for the type of mist.
Some components may be heavier than they appear. Use appropriate lifting methods to avoid personal injury and/or
property damage.

WSO Mist Collector, WSO 25-4 and 25-6
2
Combustible Mist 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 re 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 ltration products for a wide variety of applications. Some applications
may include processes or materials with inherent re and explosion hazards. Donaldson is neither an expert nor a certied
consultant in re, 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, res and/or explosions, but Donaldson does not assume responsibility for any such referrals, nor does
Donaldson assume any liability for the tness of a mitigation strategy or product for a particular installation or application. The
process owner’s nal 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 ltration 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 ltration 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 t for the particular
purpose and suitable for the user’s application. All products, product specications, and data (airow, capacity, dimensions, or
availability) are subject to change without notice, and may vary by region or country.

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Donaldson Company, Inc.
Designed for versatility, the WSO (Water, Smoke, and Oil) mist collector is specically engineered for water-based, smoke, and
oil-based mist applications. WSO Mist Collector, Models WSO 25-4 and 25-6 collect airborne mist such as oil, water-soluble,
semi-synthetic and synthetic coolant from machining operations. Two stages of ltration, plus an optional HEPA or 95% DOP
lter, provide a cleaner, healthier work environment as well as a more cost effective means of mist collection. With nominal airow
capacities of 7,400 cfm for WSO 25-4 and 11,100 cfm for the WSO 25-6, the WSO is a strategic component to meeting industrial
and government air-quality standards. The high efciency lter cartridges allow air and coolants to be recycled.
Designed to increase the versatility of the collector, a variety of lter media specically designed for mist collection is a standard
offering on the product line. The WSO 25-4 and 25-6 contain a 25 inch tall primary lter uniquely designed for either water-based
coolants, straight oils, or thermally-generated smoky applications. Standard options include drain collection containers, P-Traps,
and afterlters.
WSO models 25-4 and 25-6 are available with or without a fan blower and motor.
Intended Use
Airborne mist is small droplets of metalworking uids suspended in the air. Metalworking uids include straight oils, water-soluble
coolants, semi-synthetic and synthetic coolants. These uids perform a variety of functions such as lubricating or cooling the part
or the tool, ushing chips away from the part, and suppressing dust and smoke.
Mist is created two ways: mechanical action or thermal effects. Mechanical action involves coolant used for light lubrication and
generally creates mist greater than one micron in size. Thermal effects occur when heat vaporizes the coolant, the vapor cools
and recondenses into a mist. Thermal effects create mist from 0.01 to 1 micron in size. Other contaminants, such as dust from the
part or the tool or smoke from the vaporization of the oil or coolant are also generated when using metalworking uids.
The WSO mist collector is not designed to handle water mist alone. There should be some type of oil content to allow coalescing
or water vapor will simply pass through the lters. The extremes of very heavy oil and light, thin oil should be avoided. Very heavy
oil, similar to tar consistency, will not drain while very light, thin oil, similar to paint thinner consistency, may evaporate.
2 Product Description
Rating and Specication Information
General rating and specication information can be found in the product literature provided with the collector and is available on the
Donaldson website. For specic load values for a collector, see the Specication Control Drawing shipped with the collector.

WSO Mist Collector, WSO 25-4 and 25-6
4
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.
The WSO mist collector is shipped in three sections, a hopper plenum, a primary lter plenum and a fan support plenum. If there is
an afterlter plenum, it will ship attached to the fan support plenum. The fan will ship loose.
Options and Accessories
Final Filter
Filter air can then be passed through a nal lter to separate ne dust particulates which may have passed through the primary
lter.
Drain Collection Container
The optional drain collection container is intended for use where small amounts of liquid are collected and requires regularly
scheduled maintenance. Failure to empty the collection bottle will result in inlet plenum overow.
First Stage Filter
Air laden with dirt and coolant mist passes through the dirty air inlet and into the hopper. First is passes through a reusable rst
stage lter designed to collect and coalesce large coolant droplets which drain into the hopper.
Primary Filter
After passing through rst stage lter, preltered air then passed through a primary lter where ne coolant droplets and mist
coalesces and again drain into the hopper.
Final Filter (Optional)
Filter air can then be passed through a nal lter to separate ne dust particulates which may have passed through the primary
lter.
P-Trap with Optional Y-Strainer
Dirty coolant collected in the hopper ows through a standard P-Trap designed to drain coolant while maintaining a seal. Dirt can
be removed from the P-Trap by ushing with coolant or opening the optional strainer.
Sprinkler Coupling
Sprinkler couplings are provided for the convenience of re control system installers. The re control system installer shall make
their own decisions on the appropriate location of re control system components.
Magnehelic® Gauge
The Magnehelic is a differential pressure gauge used to measure the pressure difference between the clean- and dirty-air plenums
and provides a visual display of lter 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.
Cleaning Controls and Sensors

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Donaldson Company, Inc.
Collector Operation, WSO 25-4 shown
During normal operation, contaminated air enters the collector through one or both dirty-air inlets located on each side, toward
the bottom of the collector. The incoming air slows and turns upward, causing large mist droplets and particles to fall out of the air
stream and into the hopper. The air passes through a reusable rst-stage lter designed to collect and coalesce large droplets and
particles.
The primary stage of ltration is the pleated lter cartridge specically designed to collect, coalesce, and drain ne mist. As the
mist coalesce, the droplets are big enough to run down the cartridge and drain back into the collector. The droplets will drain on
both the inside and outside of the cartridge. Liquid that collects on the inside of the cartridge drains through the bottom portion of
the porous media and into the hopper. Clean, mist-free air exits the cartridge and discharges through the top of the collector.
optional afterlter
primary lter cartridge
rst-stage lter
P-trap (drain)
clean-air outlet
fan
clean-air plenum
coalesced
large droplets
dirty-air inlet
3 Operation
Electrical work during installation, service or maintenance must be performed by a qualied 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 classied hazardous atmospheres without an enclosure rated for the application.

WSO Mist Collector, WSO 25-4 and 25-6
6
During service activities there is some potential for exposure to the mist in the collector. Most mists present safety
and health hazards that require precautions. Wear eye, respiratory, head and other protection equipment suitable for
the type of mist when performing any service activities.
Use appropriate access equipment and procedures. Note the standard collector is not equipped with access
platforms unless noted on the specication drawings.
LOCK-OUT all energy sources prior to performing any service or maintenance on the equipment.
Electrical service or maintenance work must be performed by a qualied electrician and comply with all applicable
national and local codes.
4 Product Service
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 lters.
Abnormal changes in pressure drop may indicate a change in operating conditions and possibly a fault to be corrected.
3. Monitor exhaust.
4. Monitor hopper drainage. If slow or stopped, check hopper for obstructions and clean as necessary.
5. Check that the P-Trap is full. Rell if low or dry.
6. If equipped with a HEPA or 95% DOP, monitor pressure drop across after lter. Initial nal lter pressure drop is approximately
1-2”wg. Replace the nal lter when the gauge reads 3.5 to 4.0”wg. Do not attempt to clean or wash the nal lter. Replace
only.
Do not operate the collector without the rst- or primary-stage lter in place. Signicant reduction in nal
lter life can result.

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Donaldson Company, Inc.
First Stage Filter
Remove the rst stage lter through the lower access door. Clean the rst-stage screen by tapping it gently over an appropriate
waste container. If further cleaning is required, wash in an appropriate wash tank. To clean the rst-stage lter, soak in an
appropriate wash tank, rinse, dry, and re-install.
High temperature, steam-cleaning methods should not be used with the polypropylene lters due to the temperature limitations.
Do not operate the WSO mist collector without the rst-stage lter in place. Signicant reduction in
primary lter life can result.
Primary Filter
Note: With the collector’s airow off, allow mist-laden, wet lter to drain into the inlet plenum for at least 15 minutes prior to
removal.
1. Remove the lter by pulling the lter retention lever
down to a horizontal position. Remove lter from
collector and dispose of properly for the materials
collected.
Note: A large plastic garbage bag placed over the top
of the used lter allows cleaner lter change
out. The lter can be tipped forward and out of
the collector while the bag is pulled up over the
bottom of the cartridge.
2. Place new lter on the lter retention platform, gasket
side up. Slide lter back as far as it will go.
Note: The primary lter must be replaced. Do not
wash.
3. Lift the lter retention lever up and close access door.
Primary Filter Replacement, WSO 25-4 shown
primary
lter cartridge
lter retention level
pull down
rst stage lter
Most mists present safety and health hazards that require precautions. Wear eye, respiratory, head and other
protection equipment suitable for the type of mist.
Use proper safety and protective equipment when removing contaminants and lters.
Dirty lters may be heavier than they appear. Use appropriate lifting methods 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 lters
Filter Replacement

WSO Mist Collector, WSO 25-4 and 25-6
8
Final Filter
Note: The nal lter must be replaced. Do not wash.
1. Open the nal lter access door and lower the retention handles to release the lter.
2. Remove the lter and dispose of properly for the materials collected.
Dirty lters may be heavier than they appear. Provide a support platform or have two people, one on each
side of the lter and pull the lter out.
3. Install the replacement lter gasket-side up.
4. Seal the lter in place by lifting the retention handles to the upright position.
Final Filter Installation, Powered WSO 25-6 shown
primary lter
(gasket side up)
nal lter
(gasket side up)
rst stage lter
retention
handle

9
Donaldson Company, Inc.
P-Trap Service
1. Place a suitable container under the P-Trap, turn the collector OFF and remove the pipe plug.
2. Allow uid and particulate to drain.
3. Use thread sealant and replace pipe plug.
4. Rell the P-Trap with suitable uid before restarting the
collector.
P-Trap with Y-Strainer, Screen
Cleaning and Removal
1. Place a suitable container under the screen clean-out valve,
turn the collector OFF, close the P-Trap valve, then open the
screen clean-out valve.
2. Allow uid and particulate to drain.
3. With the clean-out valve open, slowly open the P-Trap valve.
This allows uid still trapped in the hopper to drain.
A substantial amount of uid may be
trapped in the hopper and could exceed
the container capacity. Open the P-Trap
valve slowly.
4. Close the P-Trap valve.
5. Unscrew the screen cap and pull the screen out.
6. Clean the screen and the inside of the Y-strainer body and re-assemble taking care to seat the screen in the body and cap.
7. Close the clean-out valve.
8. Open the P-Trap valve.
9. Rell the P-Trap with suitable uid before restarting the collector.
P-Trap
P-Trap with Y-Strainer
pipe plug
strainer screen
P-trap valve
screen clean out
valve

WSO Mist Collector, WSO 25-4 and 25-6
10
Drain Collection Container
Drain Collection Container
1. Install the drain collection container during installation or after collector is in its’ nal operating position.
2. Turn collector OFF.
3. Remove the container by unscrewing the container from the cap. Clean the container, faucet, and re-install.
Note: Close the faucet before turning the collector back ON.
Failure to lift the fan 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 fan.
Only qualied crane or forklift operators should be allowed to lift equipment.
To avoid personal injury and/or damage to equipment, ensure fan blowers are properly attached to equipment.
The use of a damper or variable frequency drive (VFD) is required to control airow through the collector.
Lack of a control damper or VFD will shorten lter life.
The collector can accept direct mounted fan blowers, Torit Backward Inclined (TBI) or Torit Radial Blade (TRB), to the top or side of
the collector.
For complete information, see the most current version of the TBI or TRB Fan Installation, Operation and Maintenance manual.
Options and Accessories
Fan Controls
The WSO 25-4 and 25-6 can be powered or un-powered..
Powered collectors may use TBI-3-30 Hp Fans and TRB 3-15 Hp Fans.
hopper
drain
faucet

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Donaldson Company, Inc.
Troubleshooting
Problem Probable Cause Remedy
Fan blower and motor do
not start
Improper motor wire size Rewire using the correct wire gauge as specied by
national and local codes.
Not wired correctly Check and correct motor wiring for supply voltage. See
motor manufacturer's wiring diagram. Follow wiring
diagram and the National Electric Code.
Collector not wired for available
voltage
Correct wiring for proper supply voltage.
Input circuit down Check power supply to motor circuit on all leads.
Electrical supply circuit down Check power supply circuit for proper voltage. Check for
fuse or circuit breaker fault. Replace as necessary.
Overload relay tripped Reset. Check amp draw on motor leads.
Defective overload heater or
overload assembly
Replace as necessary.
Blower and motor start,
but do not stay running
Incorrect motor starter installed Check for proper motor starter and replace if necessary.
Access doors are open or not
closed tight
Close and tighten access doors. See Filter Installation.
Electrical circuit overload Check that the power supply circuit has sufcient power to
run all equipment.
Clean-air outlet
discharging oil mist
Filters not installed correctly See Filter Installation.
Filter damage, dents in the end
caps, gasket damage, or holes in
media
Replace lters as necessary. Use only genuine Donaldson
replacement parts. See Filter Installation.
Insu󰀩cient airow Fan rotation backwards Proper fan rotation is clockwise from the top of the
collector. The fan can be viewed through the back of the
motor. See Preliminary Start-Up Check.
Access doors open or not closed
tight
Check that all access doors are in place and secured.
Fan exhaust area restricted Check fan exhaust area for obstructions. Remove material
or debris.
First Stage lter plugged Remove and clean or replace.
Primary lter needs replacement Replace lters as necessary. Use only genuine Donaldson
replacement parts. See Filter Installation.
Plugged HEPA lter Replace lters as necessary. Use only genuine Donaldson
replacement parts. See Optional Equipment.

WSO Mist Collector, WSO 25-4 and 25-6
12
Problem Probable Cause Remedy
Insu󰀩cient hopper
discharge
Plugged hopper screen Remove and clean hopper screen.
Plugged P-Trap Clean P-Trap. See P-Trap Service.
Liquid leaking from
collector door
Plugged P-Trap Clean P-Trap. See P-Trap Service.
Plugged or full drain collection
container
Remove and clean or empty the drain collection container.

Donaldson Company, Inc.
13
Appendix A - Installation

Provisional Anchor Bolt Recommendations
The quantity of anchor bolts should match the number of holes
provided in the base plates of the collector. Anchor diameter
is typically 1/8-inch less than the baseplate hole diameter.
Anchors should project a minimum of 1 ¾ -inch and account
for nut, washer, baseplate, and shims/grout.
WSO Mist Collector, WSO 25-4 and 25-6
14
Installation
Electrical Installation (including bonding and grounding of the collector) must be performed by a qualied 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.
Do not install in classied hazardous atmospheres without an enclosure rated for the application.
Service must be performed by trained and qualied maintenance personnel.
This equipment may start or stop unexpectedly from a remote location
Equipment may reach peak sound pressure levels above 80 dB (A). Noise levels should be considered when
selecting equipment location.
Location and Site Selection
Codes may regulate recirculating ltered air in your facility. Consult with the appropriate authorities having jurisdiction
to ensure compliance with all national and local codes regarding recirculating ltered air.
Equipment location must conform to all codes and standards, should be suitable for the type of dust being handled and should
ensure easy access for service and utility connections. Site selection must account for wind, seismic zone and other load
conditions. Collector intended for indoor installation and can be located on a foundation, structural framing, suspended or hung
from overhead supports.
The equipment must be anchored once in nal position. Consult a qualied engineer for nal selection of foundation or support
framing.
Note: Ensure the inlet has at least ve diameters of straight duct prior to the collector inlet including a transition to the full inlet
dimensions. Inlet transition should have a taper with a maximum of a 90-degree included angle.
Delivery and Inspection
Upon arrival inspect equipment and report any damage to
delivery carrier. File any damage claims with the delivery carrier.
Request a written inspection report from the Claims Inspector to
substantiate all damage claims.
Compare the equipment received with the description of product
ordered. Report any incomplete shipments to the delivery carrier and your Donaldson Torit representative.
Unloading and Positioning
Equipment should be lifted only by qualied crane or fork truck operators.
Failure to lift the equipment correctly can result in severe personal injury and/or property damage.
1. Remove any crates or shipping straps.
2. Lift the packaged collector from transport container.
3. Inspect for any damage and/or missing parts and report to freight carrier.
4. Check for any hardware which may have become loose during shipment and tighten as necessary.
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).

Donaldson Company, Inc.
15
Electrical installation, service, or maintenance work must be performed by a qualied electrician and comply with all
applicable national and local codes.
This equipment may start or stop unexpectedly from a remote location.
Turn power off and lock out all power before performing service or maintenance work.
The appropriate wiring schematic and electrical rating must be used. See collector’s rating plate for required voltage.
Do not install in classied hazardous atmospheres without an enclosure rated for the application.
Electrical Wiring
Support Installation
Anchors must comply with local code requirements and be capable of supporting dead, live, wind, seismic and other
applicable loads.
Anchor sizes shown are provisional, as nal anchor sizing will depend on jobsite load conditions, equipment location,
foundation/framing design variables and local codes.
Consult a qualied engineer for nal selection of suitable anchors.
Reference typical leg assembly drawing shipped with the collector prior to starting assembly.
Prepare the foundation or support framing in the selected location. Locate and install anchors.
Lifting Information
Failure to lift the equipment or sub-assemblies correctly can result in severe personal injury and/or property damage.
Only qualied crane or forklift operators should be allowed to lift equipment.
1. Use all lifting points provided.
2. Use clevis connectors, not hooks, on lifting slings.
3. Use spreader bars to prevent damage to equipment.
4. Check the Specication Control drawing for weight and dimensions of the collector and components to ensure adequate crane
capacity.
5. Lift collector and accessories separately and assemble after collector is in place.
6. Use drift pins to align holes in section anges during assembly.

WSO Mist Collector, WSO 25-4 and 25-6
16
30o Max
60o Min
Correct Axis Incorrect Axis
Typical Lifting Guidance WSO 25-4 shown
spreader bar
correct lifting
orientation
lifting lug
lter
cabinet
sealant
inlet
plenum

Donaldson Company, Inc.
17
Inlet Plenum Installation
Reference Typical Foundation Anchor and leg assembly drawing
shipped with the collector prior to starting assembly.
1. Prepare the foundation or support framing in the selected
location. Locate and install anchors.
2. Using a crane or forklift, raise the inlet plenum to the required
height.
Note: When using a crane, use clevis pins and a sling
attached to four lifting lugs.
3. Lower the inlet plenum with legs to the anchor bolts.
4. Level inlet plenum and secure all hardware.
5. Apply supplied sealant to the top ange of the inlet plenum.
6. Remove the rst stage and primary lters from the lter cabinet
and set aside.
7. Using a crane or forklift, raise the lter cabinet section to
the required height. See below illustration for correct lifting
orientation.
8. Set cabinet on top of the inlet plenum ange and attach with the
supplied fasteners.
9. Remove crane or forklift.
10. Re-install the rst stage and primary lters.
Inlet Plenum Installation, WSO 25-4 shown
leg
foundation
anchor bolt
inlet plenum
P-Trap Installation
Ensure collected material properly ows through the P-Trap. The P-Trap dimensions should
accommodate a column of coolant greater than the static capacity of the fan to avoid coolant pooling in
the collector and potentially causing property damage.
1. Install the P-Trap as shown in P-Trap Installation.
2. Position the P-Trap outlet to the proper location and tighten the
union.
3. Plumb the P-Trap to a receptacle or install a return line back to
the machine center.
4. Fill P-Trap before starting collector.
Note: The characteristics of some machining uids change
with time, use, and exposure to air. Check the condition
of the collected uid before re-using.
P-Trap Installation
maximum
ll level
hopper
NPT pipe
union
pipe plug