Torit HPW User manual

Donaldson Company, Inc. © 1995 1
IOM-29349-00
Revision 5
Torit Dust Collector
Models HPW, HPT, and HPH
Includes Installation, Operation, and Service Instructions
HPW
HPH
HPT
Torit®Installation
and Operation Manual
This manual contains specific precautionary statements relative to worker
safety in appropriate sections. Read this manual thoroughly and comply as
directed. It is impossible to list all of the potential hazards of dust control
equipment or systems. It is imperative that use of the equipment be discussed
with a Torit representative. Personnel involved with the equipment or systems
should be instructed to conduct themselves in a safe manner.
IMPORTANT

Donaldson Company, Inc. © 19952
NOTE CAUTION
Statements indicate precautions necessary
to avoid potential equipment failure. Statements indicate potential safety hazards.
ATTENTION
CAUTION
APPLICATION OF DUST CONTROL EQUIPMENT:
• Special care must be exercised in the use of
dust collection equipment when combustible
material, such as buffing lint, paper, wood
dust, aluminum, or magnesium dust are
present. These materials may present a fire
or explosion hazard. A prudent user of Torit
equipment should consult and must comply
with all National and Local Fire Codes and/
or other appropriate codes when
determining the location and operation of
dust collection equipment.
• Under no conditions should anyone,
including the machine operator, allow
burning objects or lit cigarettes to enter the
hood or ducting of any dust control system.
• Avoid mixing combustible materials with
dust generated from grinding of ferrous
metals due to the potential fire hazard
caused by sparks being pulled into the dust
collection equipment.
• When collection equipment is used to collect
flammable or explosive dusts, as a minimum,
the dust collection equipment should be
located outside the building. Also, an
installer of fire extinguishing equipment,
familiar with the type of fire hazard and
local fire codes, should be consulted for
recommendations and installation of the
proper fire extinguishing equipment. Torit
equipment does NOT contain fire
extinguishing equipment.
• Explosion relief vents are required on some
applications. Consult with an insurance
underwriter or a NFPA Manual to
determine proper vent sizing requirements.
Vents installed on dust collection
equipment must relieve to the outside of the
building to minimize chances of a
secondary explosion. Consult the proper
authority to determine proper method of
venting the dust collection equipment. Torit
equipment does NOT contain explosion
relief vents, except on special order.
• To insure optimum collector performance,
always use Torit-Built®replacement
filters.
Portions of your Torit baghouse, including the clean and dirty chambers of the baghouse, may be considered
"OSHA Permit Required Confined Spaces." OSHA Regulations, found in the Code of Federal Regulations, 29
CFR Section 1910.146 control the entry of "confined spaces." Please refer to this regulation to determine if your
use of the baghouse requires a permit program.
Methods of determining "acceptable entry conditions" vary depending upon the application and the type of dust
collected. In some cases, a visual inspection of airborne dust in the baghouse may be sufficient. In other cases,
chemical tests may be necessary to insure safe entry and occupancy.
Torit recommends that employers follow safe work practices during installation and use of all dust collection
equipment. This includes following applicable OSHA regulations and any other applicable local, state, or
federal laws. Copies of OSHA Regulations can be obtained from your local OSHA office or:
Superintendent of Documents
US Government Printing Office
Washington D.C. 20402 Phone: [phone]
As always, if you have any questions about your Torit dust collector, do not hesitate to contact your local sales
representative or the Torit headquarters office.

Donaldson Company, Inc. © 1995 3
Table of Contents Figures
Notes and Cautions ...................................... 2
Data Sheet ................................................... 3
1.0 Introduction ................................................. 5
1.1 Operational Explanation .............................. 5
1.1.1 Normal Operation ....................................... 5
1.1.2 Filter Cleaning ............................................. 6
2.0 Installation ................................................... 6
2.1 Inspection ..................................................... 6
2.2 Ship Loose Items .......................................... 6
2.3 Equipment/Tools Required ........................... 7
2.4 Preinstallation .............................................. 7
2.5 Assembly of Standard Equipment ................. 8
2.5.1 General Safety Precautions ........................... 8
2.5.2 Erection (Major Collector Components) ....... 9
2.5.3 Filter Tube Installation ............................... 11
2.6 Assembly of Optional Equipment ............... 13
2.6.1 55-Gallon Drum Cover Pack
With or Without Slide Gate .................. 13
2.6.2 Transition Pack .......................................... 14
2.6.3 Transition and Airlock ............................... 15
2.6.4 Magnehelic®* Gage ................................... 16
2.6.5 Photohelic®* Gage ..................................... 17
2.6.6 Level Indicator ........................................... 19
2.6.7 Platform and Handrails .............................. 19
2.6.8 Ladder/Cage .............................................. 20
2.6.9 Light Pack (HPW Only) ............................. 20
2.6.10 Blower Fan Mounting Instructions .............. 21
2.6.11 Damper Pack ............................................. 23
2.7 Electrical Installation ................................. 23
2.7.1 Electrical Operation ................................... 24
2.7.2 Solid-State Control Timer Specifications .... 24
2.8 Installation—Compressed Air Supply ......... 26
3.0 Prestart-Up Check ...................................... 27
4.0 Start-Up ..................................................... 27
5.0 Routine Maintenance ................................. 27
5.1 Operating Checks ...................................... 28
6.0 Service ....................................................... 28
6.1 Dust Removal ............................................ 29
6.2 Compressed Air Components ...................... 29
7.0 Troubleshooting Guide ............................... 30
Parts Ordering Information ........................ 36
Warranty ................................................... 36
Figure 1 - Typical Installation View ..................... 4
Figure 2 - Operational Schematic ......................... 5
Figure 3 - Hopper Joint and Leg Attachment ...... 10
Figure 4 - Leg Bracing ....................................... 10
Figure 5 - Sealing Details ................................... 11
Figure 6 - Filter Tube Installation ....................... 12
Figure 7 - Hose Drum Cover Pack with Gate ...... 13
Figure 8 - Hose Drum Cover Pack without Gate . 14
Figure 9 - Transition Pack, Transition,
and Airlock................................... 15
Figure 10 - Installation of Magnehelic Gage......... 16
Figure 11 - Installation of Photohelic Gage ........... 17
Figure 12 - Photohelic Gage Wiring Diagram ...... 18
Figure 13 - Weatherproof NEMA 4 Enclosure ...... 18
Figure 14 - Blower Transition Assembly ............... 22
Figure 15 - Damper Assembly .............................. 23
Figure 16 - Solid-State Control Timer
Wiring Diagram ........................... 24
Figure 17 - Compressed Air Manifold .................. 26
* Photohelic and Magnehelic are registered trademarks
of Dwyer®Instruments, Inc.
Customer Name
Address
Shipping Date Installation Date
Model Number Serial Number
Filter Medium
Accessories
Other
Data SheetData Sheet
Data SheetData Sheet
Data Sheet
Torit is the leading designer and manufacturer
of air filtration systems for the control of
industrial air pollution. Its systems are designed
to help reduce occupational hazards, lengthen
machine life, reduce in-plant maintenance
requirements, and improve product quality.

Donaldson Company, Inc. © 19954
Figure 1
Typical Installation View (HPH Shown)
* Asterisk items (*) are not included with Dust Collector.
* Sprinklers.
* Explosion Relief Panels.
Hopper
* Air Line to Manifold
* Solenoid Electrical Connection
* Power Supply Disconnect Switch
Solid-State Control Timer
* Blower Fan with Transition
* Air Supply Line
* Automatic Condensate Valve
Magnehelic or Photohelic* Gage
* Low Voltage (120 VAC)
Magnetic Starter (Blower Motor)
* Air Regulator
* Air Filter (Bleed Type)
* Shut-Off Valve

Donaldson Company, Inc. © 1995 5
1.0 Introduction
The Torit HPH, HPT, and HPW are used for
the collection of airborne dust and particulate.
As part of a manufacturing process, the HP
collector series provides highly efficient,
continuous, on-line dust collection.
Standard HP models are available in sizes
ranging from 36 to 320 filter tubes. Other sizes
are available as specials. The standard filter
length is 8 feet. The HPH is a low profile
horizontal filter removal collector; the HPT is a
vertical filter removal collector; and the HPW is
a vertical filter removal collector with a walk-in
top section.
If, after reading this manual, you have further
questions or are in need of technical or field
support, contact your local Torit representative.
1.1 Operational Explanation
1.1.1 Normal Operation
(See Figure 2)
During normal operation, dust-laden air enters
the HP inlet section next to the filter tubes. The
airflow must turn 90° to pass through the filter
tube section. The energy loss from turning and
the reduced velocity in the inlet section causes
the heavier dust particles to drop directly into
the hopper below. A standard inlet baffle helps
evenly distribute the dust-laden air around the
filter tubes. The dust is collected on the outside
surface of each filter tube where it forms a cake
that aids in filtering efficiency. Filtered (clean)
air passes through each filter tube into the clean
air plenum where it is discharged through the
clean air outlet.
Handrail
Clean Air Plenum
Clean Air Outlet
Filter Tubes
Filter Tube Access Doors
Hopper
Inlet Baffle
Dirty Air Plenum
Dirty Air Inlet
Figure 2
Operational Schematic (HPT Shown)

Donaldson Company, Inc. © 19956
1.1.2 FilterCleaning
Filter tubes are cleaned automatically and
sequentially. Only one row of filter tubes is
cleaned per pulse. During the filter tube cleaning
purge, the solid-state timer energizes a solenoid
valve. This action causes the corresponding
diaphragm valve to send a pulse of compressed
air out into the blowpipe. The blowpipe is
equipped with two high pressure nozzles
centered over each oval shaped filter tube. The
high pressure pulse enters the inside of the filter
tube forcing air through the filter. The collected
contaminants are blown away from the outside
surface of the filters. The dust falls into the
hopper where it is discharged into drums, screw
conveyor, or rotary valve.
2.0 Installation
2.1 Inspection
The collector is normally shipped with major
components preassembled when possible.
However, due to space restrictions and/or to
minimize freight costs, some components may be
shipped unassembled and nested. On most
HPW/T models, the clean air plenum, dirty air
plenum, and hopper/support weldment are
unassembled.
On most HPH models, the clean air plenum is
assembled to the dirty air plenum and the
hopper and support are unassembled. Also, the
blowpipes are unassembled to facilitate filter
tube installation. In most cases, the filter tubes
and frames are shipped separate (unassembled)
for all models.
A packing list is enclosed with each dust
collector. If there are any questions about
completeness of a shipment or obvious damage
to packaged parts, notify the carrier
immediately. Also, damage to any section of the
shipment should be noted on the carrier's Bill of
Lading.
A crane is recommended for unloading,
assembly, and installation of the dust collector.
Before unloading major components, such as
housing and hopper, check inside for smaller
items that could be damaged if not removed
first. Unload components in a location that
allows for parts identification and assembly.
The filter tubes should be stored in a dry,
rodent-proof area until ready for installation.
2.2 Ship Loose Items
Items shipped loose with the HP dust collector
may include:
• Hopper
• Legs and Cross Bracing
• 55-Gallon Drum Cover Pack
• Transition Pack
• Magnehelic Gage or Photohelic Gage
• Control Box
• Hardware/Sealant
• Explosion Vent
• Weather Cover
• Platforms
• Ladders
• Ladder Cages
• Air Locks
• Tubesheet
• Filter Tubes
• Filter Cages
• Blowpipes (HPH only)

Donaldson Company, Inc. © 1995 7
2.4 Preinstallation
(See Figure 1)
The HP dust collector is usually mounted on a
reinforced concrete foundation. However, roof
mounting is also possible. When calculating for
foundation or roof mounting, the weight of both
the dust collector, the material being collected,
and all auxiliary equipment must be considered
together with wind, seismic and other live loads.
See the Specification Control Drawing for the
dust collector weight.
To avoid delay, install foundation in the proper
location. Pay particular attention to the anchor
bolt location. Anchor bolts must extend at least
1-3/4" above foundation. The collector should
be located with consideration for emptying
hopper storage area, shortest runs of inlet and
outlet ductwork, electrical and compressed air
connections, and convenience of maintenance.
In case of hazardous dust collection, consult
with local authorities for the proper location of
the dust collector.
2.3 Equipment/ToolsRequired
The following is a list of typical tools and
equipment required to install and assemble an
HP dust collector:
• Crane/Lift Truck
• Slings/Spreader Bars/Clevice Pins
• Drift Pins
• Clamps
• Screwdrivers
• Pipe Wrenches
• Socket Wrenches
• End Wrenches
• Large Crescent Wrench
• Drill and Drill Bits
• Pipe Sealant
• Extension Cords
• Trouble Light
• Location must be clear of all
obstructions such as utility lines or roof
overhang (see Specification Control
Drawing).
• A crane must be used to move the
collector into position.
NOTE
Wearing safety equipment such as helmets
and glasses is recommended for all persons
while working in or around the collector.
CAUTION
Use appropriate lifting equipment and
adopt all the safety precautions needed for
moving and handling the equipment.
CAUTION

Donaldson Company, Inc. © 19958
2.5 Assembly of Standard Equipment
(See Figure 1)
2.5.1 General Safety Precautions
1. Be certain that the crane has sufficient
capacity to lift sections, sub-assemblies and
complete units, if that applies. Check
weights and dimensions of dust collector
components on specification drawings
furnished by Torit. Spreader bars are
recommended between lifting cables;
shallow cable angles should be avoided.
2. No person shall operate the crane or other
erection equipment except those qualified by
training and experience.
3. Do not install during gusty or heavy winds.
4. Note location of adjacent structures, power
lines, traffic, unstable ground, and ground
obstacles in the erection area.
5. Never swing loads over personnel.
6. Use conventional hand signals for crane
operators.
7. Always consider electrical lines to be live
(hot).
8. Provide an observer to assist crane operator
for periods of impaired visibility.
9. Refer to applicable OSHA regulations and
local rules in using cranes, forklifts, and
other erection equipment.
10. Make liberal use of drift pins to align holes
in section flanges during assembly.
11. Wear appropriate safety gear including hard
hats and safety glasses.
• A crane is recommended for the
unloading, assembly, and installation
of the dust collector.
• Connect lifting sling to a minimum of 4
lifting lugs. Distribute loads equally.
Use clevices, not hooks, on lifting sling.
Use spreader bars on lifting sling.
CAUTION
NOTE
Each item to be attached to your collector
is accompanied by a drawing that shows
the attachment process. Refer to both the
drawing and this manual when erecting
your collector.
Remove all crating and strapping from the unit.
Remove all miscellaneous parts (bolts, nuts, etc.)
before lifting unit off of the truck. Check the
parts received against the packing slips. If there
are parts missing, the carrier and your local
Torit Representative should be notified
immediately.

Donaldson Company, Inc. © 1995 9
2.5.2 Erection (Major Collector Components)
Do not disconnect crane until the lifted
component is securely fastened in place.
CAUTION
NOTE
• If the dust collector is shipped
preassembled, including support legs, it
may be lifted directly from the truck
onto the foundation.
• If the dust collector is shipped
unassembled, see Specification Control
Drawing for correct orientation and
location of components.
• All flanged connections of components
providing air seals, including clean air
plenum, tube section, and hopper, must
be sealed before assembly with sealant
as shown in Figure 5, Sealing Details
unless they are factory assembled.
• Use spreader bars for lifting sections of
collector.
• Use drift pins to align holes during
erection.
• Filter tubes and cages can be installed
before or after collector is erected.
The following general procedure is
recommended for assembly:
HPT/W Units Only - (Hopper & Legs)
1. The HPT/HPW hopper/leg arrangements
come totally assembled.
2. Lift the hopper/leg assembly, using a crane,
into position over the anchor bolts and lower
down onto the anchor bolt pads. Fasten the
legs to the anchor bolts with washers and
nuts (provided by customer). Level the
hopper at the top flange in all directions by
placing solid steel shims under the leg pads.
Tighten the nuts on the anchor bolts. Re-
check level and adjust as required. Remove
the crane from the hopper.
3. Apply 1/4" diameter sealant to the top
flange all around toward the inside edge of
the bolt pattern (see Figure 5, Sealing
Details).

Donaldson Company, Inc. © 199510
HPH Units Only - (Hopper & Legs)
(See Figures 3 and 4)
1. HPH units have unassembled leg sets.
Locate and identify all legs, bracing, and
hardware required for leg set. Organize the
legs and bracing for assembly.
2. Lift the hopper using a crane and position
over the four legs. Stand each leg up on its
pad, one at a time, and position the hopper
gusset holes to line up with the holes in the
leg. Use a drift pin to assist in hole
alignment. Fasten each leg using the proper
bolts, washers, and nuts provided. Do not
tighten any hardware at this time. Do not
disconnect the crane.
3. Position the inside angle of the cross bracing
and bolt in place using the proper bolts,
washers, and nuts provided. Do not tighten.
Position the outside angle of the cross
bracing and bolt in position. Where the two
angles cross, bolt through each hole with a
bolt, washers, and nut. Repeat this sequence
on the opposite side of the hopper. Do not
tighten hardware.
4. Lift the hopper leg assembly into position
over the anchor bolts and lower down onto
the anchor bolt pads. Fasten the legs to the
anchor bolts with washers and nuts
(provided by customer). Level the hopper at
the top flange in all directions by placing
solid steel shims under the leg pads. Tighten
all hardware on the gussets, cross bracing,
and anchor bolts. Re-check level and adjust
as required. Remove the crane from the
hopper.
5. Apply 1/4" diameter sealant to the top
flange all around toward the inside edge of
the bolt pattern (see Figure 5, Sealing
Details).
Figure 4
Leg Bracing
(HPH Only)
Cross Bracing
Figure 3
Hopper Joint and Leg Attachment
(HPH Only)
Hopper
Leg
Dirty Air Plenum

Donaldson Company, Inc. © 1995 11
2.5.3 FilterTube Installation
(See Figure 6)
Several filter medias are available to meet the
filtration needs for many different types of dust.
Contact your local Torit representative for
assistance in choosing the correct media for
your dust collection requirements.
The cages will arrive on site packaged in crates.
The filters will arrive on site packaged in boxes.
Choose a clean area for pre-assembly of the
filters onto the cages.
Installing the filters before the filter section is
raised will be easier and save time. Install the
filter tubes as shown in Figure 6, Filter Tube
Installation. Slip the filter tube over the filter
tube frame until it touches the top flange of the
frame. Slide this filter assembly through the
tubesheet. Align the two bolts with the threaded
inserts in the tubesheet. Secure each filter tube
and frame assembly with the Boltsafe™
hardware provided.
Sealing Detail
Apply Sealant Between
Flanges, on Inside of Bolt
Pattern
Dirty Air Plenum
1/4" Dia.
Sealant
Hopper
1/4" Dia. Sealant
Tubesheet
Sealant
Dirty Air Plenum
Clean Air Plenum
Dirty Air Plenum to
Hopper Joint
Clean Air Plenum to
Dirty Air Plenum Joint
Figure 5
SealingDetails
NOTE
• Use a speed wrench to tighten the
screws. Do not use a power driver or
impact nut driver. These may strip
threads or shear screws.
• Only tighten screws until the top flange
rests on the tubesheet, about 8-10 ft. lbs
torque.

Donaldson Company, Inc. © 199512
Figure 6
FilterTube Installation
Filter Tube Frame
Filter Tube
Tubesheet
Captive Hex Washer Head Steel Machine Screw
5/16" - 18 NC x 1-1/4" Lg.
HPH Cabinet Assembly
If a platform or handrail is going to be attached
to the collector, refer to Section 2.6.7, Platform
and Handrails before continuing.
1. Using a crane, lift the assembly into position
over the hopper. Using drift pins, align the
holes in the cabinet-hopper flanges and
lower the cabinet onto the hopper.
2. Fasten the flanges together using the bolts,
washers, and nuts provided. Tighten all
hardware.
3. Remove the crane from the collector.
HPT/HPW Cabinet Assembly
If a platform or handrail is going to be attached
to the collector, refer to Section 2.6.7, Platform
and Handrails before continuing.
1. Lift the filter section from the truck and
lower down to a cleared assembly area.
Remove the crane. Remove the lifting lugs.
2. Remove the bolts, washers, and nuts that
hold the tubesheet in place.
3. Apply 1/4" diameter sealant all around
toward the inside edge of the bolt pattern on
top of the tubesheet (see Figure 5, Sealing
Details).
Top Flange
Threaded Insert
NOTE
•HPT Model Only - In some instances it
may be preferable to assemble the top
railings to the clean air/dirty air plenum
before hoisting it onto the hopper. If
you choose to do so, take care not to
damage the railings with the lifting sling
or the spreader bars.
• When lowering the clean air plenum
onto the filter section, be sure to locate
the blowpipe air manifold over the
blank end of the tubesheet.
Do not use railings for lifting any part
of the collector.
CAUTION

Donaldson Company, Inc. © 1995 13
Hose Duct
Hopper Flange (Ref)
Slide Gate
1/4" Dia. Sealant
(To be Inside of Bolt Pattern)
Drum (Ref)
Supplied By Customer
Hose Clamp
Drum Cover
Hose Clamp
Latch (Also Furnished
Without Latch)
Figure 7
Hose Drum Cover Pack with Gate
4. Using a crane, lift the clean air plenum into
position over the filter section. Using drift
pins, align the holes in the flanges of the
filter and clean air sections and lower onto
the filter section. Fasten the flanges together
using the bolts, washers, and nuts provided.
Tighten all hardware.
5. Lift the cabinet into position over the
hopper. Using drift pins, align the holes in
the cabinet-hopper flanges and lower the
cabinet onto the hopper.
6. Fasten the flanges together using the bolts,
washers, and nuts provided. Tighten all
hardware.
7. Remove the crane from the collector.
2.6 Assembly of Optional Equipment
2.6.1 55-Gallon Drum Cover Pack With or
Without Slide Gate (See Figures 7 and 8))
))
)
The 55-gallon drum attachments are designed to
fit a 55-gallon drum that measures
approximately 24" diameter x 33" tall. These
drums are supplied by the customer. The flexible
hose attachment allows for easy drum
installation and removal. A pallet under the
drum will allow heavier product to be removed
by a lift truck. If a pallet is used, the length of
hose or clearance under the unit may have to be
modified by customer.

Donaldson Company, Inc. © 199514
Figure 8
Hose Drum Cover Pack without Gate
Hopper Flange (Ref)
Drum Cover
Adapter
Hose Clamp
Hose Duct
Hose Clamp
Latch (Also Furnished
Without Latch)
Drum (Ref)
Supplied By Customer
1/4" Diameter Sealant
(To be Inside of Bolt Pattern)
1. Apply 1/4" diameter sealant between the
hopper flange and the slide gate as shown in
Figure 7, Hose Drum Cover Pack with Gate
or between the hopper flange and the
adapter as shown in Figure 8, Hose Drum
Cover Pack without Gate.
2. Fasten the drum cover pack and slide gate to
the hopper flange using 3/8" bolts, washers,
and nuts as shown in Figure 7, Hose Drum
Cover Pack with Gate. Fasten the adapter to
hopper flange, as shown in Figure 8, Hose
Drum Cover Pack without Gate, if the slide
gate is not included.
3. Attach the drum cover to 55-gallon drum as
shown in both illustrations. If the latches are
included, use them to hold the cover to drum
as shown.
2.6.2 Transition Pack
(See Figure 9)
Do not use a transition pack on a single opening
trough outlet hopper.
The transition is designed specifically as a
connection between the bottom of the hopper
and the AN valves built by Torit. There are four
sizes available 18" to 8", 18" to 10", 18" to
12", and 18" to 16". These transitions are all 7"
tall flange to flange.
1. Apply 1/4" diameter sealant between the
hopper flange and the transition as shown in
Figure 9, Transition Pack, Transition, and
Airlock.
2. Fasten the transition to the hopper flange
using 3/8" bolts, washers, and nuts as shown
in Figure 9, Transition Pack, Transition, and
Airlock.

Donaldson Company, Inc. © 1995 15
2.6.3 Transition and Airlock
(See Figure 9)
Do not use a transition and airlock on a single
opening trough outlet hopper.
The transition and airlock are designed to fit the
standard opening on the bottom of the HP
series. The sizes available are the 8", 10", 12",
and 16". Sizes are based on product loading and
determined at the time of order.
1. Apply 1/4" diameter sealant between the
hopper flange and transition as shown.
2. Fasten the transition to the hopper flange
using 3/8" bolts, washers, and nuts as
shown.
3. Determine the proper position required for
the rotary airlock. Allow for clearance,
electrical connections, and future
maintenance of the rotary airlock.
4. Apply the sealant supplied with the rotary
airlock to the top flange.
5. Fasten the rotary airlock to the transition
flange using 3/8" bolts, washers, and nuts as
shown.
6. Electrical connections should be made by a
qualified electrician. Refer to the motor
nameplate for specifications of voltage,
amperage, cycle, and proper wiring
sequence. Follow all local codes for wiring.
Disconnect all power to the rotary airlock
before servicing. Never allow any objects
to be placed in any opening of the rotary
airlock during operation.
CAUTION
Transition Pack Transition and Airlock
Figure 9
Transition Pack, Transition, and Airlock
3/8-16 Bolt
Transition
8, 10, 12, or 16"
3/8"
Flat Washer
3/8"
Flat Washer
3/8"
Hex Nut
1/4" dia sealant
Apply toward inside
of bolt pattern.
Hopper Flange (Ref)
Note: Bolts, washers, and nuts are same for both Transition Pack and Transition and Airlock.
3/8"
Hex Nut
1/4" dia sealant
Apply toward
inside of bolt pattern.
3/8"
Flat Washer
3/8-16 Bolt
Rotary Airlock
(AN Valve) 8, 10, 12, or 16"

Donaldson Company, Inc. © 199516
Self Drilling Screws (2)
3/8" Washer
Clean Air Chamber Drill Location
3/8" Washer
1/8" NPT Coupling
Mounting Screws
6-32 x 1/4" Lg.
Supporting Structure
Mounting Surface (Ref)
Tubing Male Adapters
1/8" NPT 900Elbow
Magnehelic Gage
High Pressure Port (Ref)
Low Pressure Port (Ref)
Plastic Tubing
1/8" NPT Pipe Plugs (2)
Tubing Male
Adapters 1/8"
NPT
Tubing Male Adapters
1/8" NPT 900Elbow
Dirty Air Chamber Drill Location
900Elbow 1/8" NPT
Static Pressure Tap Tee
Adapter 1/8" NPT
Gage Mounting Bracket
Figure 10
Installation of Magnehelic Gage
2.6.4 Magnehelic Gage
(See Figure 10)
The Magnehelic gage is a standard feature on
the HP series collector. The pressure taps for
this gage are factory installed.
1. After unpacking the Magnehelic parts,
choose a convenient accessible location on
or near the unit for mounting the gage.
2. Prior to mounting, plug the pressure ports on
the back of the Magnehelic gage using the
two 1/8" NPT pipe plugs supplied with the
gage. Install the two 1/8" NPT male
adapters supplied with the gage into the
openings on the side of the gage marked
high and low pressure. Mount the gage to
the mounting bracket with three,
#6-32 x 1/4" long screws (supplied with the
gage) as shown in Figure 10, Installation of
Magnehelic Gage.
3. Locate the Magnehelic gage and mounting
bracket assembly for the best visual
advantage. The plastic tubing will determine
the maximum distance away from the
collector that the mounting bracket and
gage can be located (35 feet of tubing is
supplied). Remember that the tubing will
have to be cut and that one piece may be
longer than the other. If more tubing is
required, please contact your local Torit
representative. Once the mounting bracket
assembly position is determined, mount this
assembly to the supporting structure using
the two self-drilling screws.

Donaldson Company, Inc. © 1995 17
2.6.5 Photohelic Gage
(See Figures 11, 12, and 13)
The Photohelic gage is an optional feature on
the HP series collector. The pressure taps for
this gage are factory installed.
1. After unpacking the Photohelic parts, choose
a convenient accessible location on or near
the unit for mounting the gage.
2. Mount the gage to the panel with mounting
ring, retaining ring, and four #6-32 x 1-1/4"
long screws. Before tightening the screws,
assemble the two 1/8" NPT x 1/4" O.D.
male tube adapters supplied with the gage
into the openings on the side of the gage
marked high or low pressure. Align the gage
so that the two 1/8" NPT male tube adapters
and the 2.375" hole diameter in the
4. Connect the tubing to the high pressure and
low pressure port fittings located on the
Magnehelic gage. The high pressure port
tubing is attached to the pressure fitting
mounted in the dirty air chamber (filter
section). The low pressure port is attached
to the fitting in the clean air chamber (see
Figure 10, Installation of Magnehelic Gage).
5. Zero and maintain the Magnehelic gage per
operating and maintenance instructions
provided by the manufacturer of the
Magnehelic gage.
Figure 11
Installation of Photohelic Gage
Mounting Bracket
Plastic Enclosure Screws
6 - 32 x 5/16" Lg.
Clean Air Chamber Drill Location
3/8" Washer
1/8" NPT Coupling
Self Drilling
Screws (4)
Mounting Ring
Retaining Ring
Supporting Structure
Mounting Surface (Ref)
Gage Mounting Fasteners
(4) #6-32 x 1-1/4"
Tubing Male Adapters
1/8" NPT 900Elbow
Photohelic Gage
High Pressure Port
Low Pressure Port
Plastic
Tubing
Tubing Male
Adapters
1/8" NPT
Tubing Male Adapters
1/8" NPT 900Elbow
Dirty Air Chamber Drill Location
3/8" Washer
Adapter 1/8" NPT
900Elbow 1/8" NPT
Static Pressure Tap Tee

Donaldson Company, Inc. © 199518
mounting bracket are in line and then
tighten the four #6 - 32 x 1-1/4" long screws.
3. Remove the four #6 - 32 x 5/16" long screws
and plastic enclosure on back of the
Photohelic gage and set aside. Add the two
jumper wires–supplied by customer–and
wire the gage as shown in Figure 11,
Photohelic Wiring Diagram, using 3/4"
conduit opening. Reassemble plastic
enclosure and fasten securely using the #6 -
32 x 5/16" long screws previously removed.
4. Locate the Photohelic gage and mounting
bracket assembly for the best visual
advantage. The plastic tubing will determine
the maximum distance away from the
collector that the mounting bracket and
gage can be located (35 feet of tubing is
supplied). Remember that the tubing will
have to be cut and that one piece may be
longer than the other. If more tubing is
required, please contact your local Torit
representative. Once the mounting bracket
assembly position is determined, mount this
assembly to the supporting structure using
the two self-drilling screws.
All parts shown in Figure 11 (except mounting
bracket) are included in the Weatherproof
NEMA 4 Enclosure package.
Figure 13
Weatherproof NEMA 4 Enclosure
Figure 12
Photohelic Gage Wiring Diagram
Transformer
Remove Factory Installed Jumper on
Timer Labeled (Pressure Switch)
View of Board on Rear of
Photohelic Gage
Pressure Switch
Fan Starter (Ref)
Jumper Wires to be Field Installed as Shown Wiring By Others
STOP START
115V
X1
1M
1M
L1 L2
H
I
L
O
X2
L1 L2 COM 1 2 3
5. Connect the tubing to the high pressure and
low pressure port fittings located on the
Photohelic gage. The high pressure port
tubing is attached to the pressure fitting
mounted in the dirty air chamber.

Donaldson Company, Inc. © 1995 19
2.6.7 Platform and Handrails
The platform is offered on the HPH and HPW
collectors. Mounting brackets have been
supplied which are used to attach the platform
to the collector. Before lifting the collector onto
the hopper, the platform should be installed. A
crane or fork lift may be used to lift and position
the platform during assembly. An assembly
drawing has been sent with the platform which
calls out the proper size and location of
hardware to be used.
HPH & HPW Platform
1. Position the platform for mounting and align
the holes in the brackets and platform with
drift pins. Fasten the platform to the
collector using the bolts, washers, and nuts
supplied.
2. After the platform has been attached to the
collector and all hardware has been
tightened, the collector may be lifted onto
the hopper-leg assembly.
6. Zero and maintain Photohelic gage per
operating and maintenance instructions
provided by the manufacturer of the
Photohelic gage.
7. Refer to Figure 12, Photohelic Gage Wiring
Diagram for the proper wiring of the
Photohelic gage.
8. The Photohelic gage weatherproof pack
comes assembled in a NEMA 4 enclosure.
All of the hookups are identical to the
Photohelic gage pack. Follow all of the
directions as stated in Steps 1 through 7.
2.6.6 LevelIndicator
The level indicator is factory installed when
ordered with the collector. The indicator is
located in the hopper side wall and extends
inward.
The level indicator may be used to start the
rotary valve or screw conveyor to evacuate dust
from the hopper on light dust load applications.
However, for normal to heavy dust loads, it is
recommended to interlock the dust removal
equipment, such as the rotary valve or screw
conveyor, with the dust collector fan to allow
continuous dust removal from the hopper.
Consequently, the level indicator is normally
used to sense a plugged hopper condition due to
excessive dust loads or malfunctioning dust
removal equipment. All electrical connections
are to be made by a qualified electrician
according to local codes. Wiring is supplied by
customer.
Do not lift the collector using any portion of
the platform to bear weight.
CAUTION

Donaldson Company, Inc. © 199520
HPT Handrail
A handrail is offered on the HPT collectors.
After the clean air plenum has been assembled
to the filter section, install the handrails before
lifting the collector onto the hopper. The
handrails will have to be lifted into place using a
crane or fork lift. An assembly drawing is
included with the handrails which calls out the
proper size and location of hardware to be used.
1. Position the handrails for mounting. Remove
any bolts, washers, and nuts from the flange
where the railing pads will be attached.
Align the holes in the pads and flanges and
fasten the handrails using the bolts, washers,
and nuts supplied.
2. After the handrail has been attached to the
collector and all hardware has been
tightened, the collector may be lifted onto
the hopper-leg assembly.
Do not lift the collector using any
portion of the handrail.
CAUTION
2.6.8 Ladder/Cage
The ladders offered with the HP collectors may
be knocked down for shipping. All brackets and
hardware to assemble the ladder, cage, and
braces to the collector are supplied. A crane is
required to lift the ladder assembly into position
and attach to the platform or handrail. An
assembly drawing is included with the ladder/
cage which calls out the proper size and location
of hardware to be used.
1. Preassemble the ladder or ladder with cage
when the parts are lying on the ground. Use
the bolts, washers, and nuts called out on the
assembly drawing.
2. After the ladder of ladder with cage have
been assembled, attach the crane lifting
slings to the top four ladder rungs so the
weight of the assembly can be distributed
evenly.
3. Lift the assembly into position, align all
holes, and attach the ladder to the collector.
Position all braces and attach them between
the ladder and the collector.
4. Recheck all hardware for tightness.
Remove the lifting slings.
2.6.9 Light Pack (HPW Only)
The light pack is offered for use in the walk-in
section of the HPW collector. The weatherproof
light switch is located outside of the collector.
The light is located inside the clean air plenum
and is attached to a bracket located in the
ceiling of the plenum. all hardware used to
attach the light and switch is included. The
wiring, conduit, and electrical connectors are
supplied by the customer. All wiring must
comply with local codes and must be done by a
qualified electrician.