Donaldson Torit Downflo Evolution DFE 2-8 User manual

Downflo®Evolution
DFE 2-8, 2-12, 3-12, 3-18, 3-24, 3-36, 3-48, 3-60, 3-72, 4-16, 4-24,
4-32, 4-48, 4-64, 4-80, 5-20, 5-30, 5-40, 5-60 and 5-80
Installation and Operation Manual
Installation, Operation, and Service Information
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.
IOM AG8249101 (ENG)
Revision 3
English
Master Language

Donaldson Company, Inc.
i
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
IMPORTANT NOTES

Magnehelic®and Photohelic®are registered trademarks of Dwyer Instruments, Inc.
Downflo Evolution, DFE 2-8 to 5-80
ii
Contents
IMPORTANT NOTES .................................................................i
Safety Communication............................................................1
Description................................................................................2
Purpose and Intended Use.....................................................2
Rating and Specification Information...................................3
Operation...................................................................................3
Inspection on Arrival...............................................................4
Installation Codes and Procedures ......................................4
Installation.................................................................................4
Foundations or Support Framing .......................................5
Collector Location................................................................5
Site Selection .......................................................................5
Hoisting Information ............................................................5
Typical Installation...................................................................6
Standard Equipment................................................................7
Field Assembly......................................................................7
Hopper Installation...............................................................7
Leg Installation .....................................................................7
Provisional Anchor Bolt Recommendations....................8
Module Assembly.................................................................9
Yoke, Venturi and Filter Installation.................................11
Compressed Air Installation.............................................13
Electrical Wiring.................................................................13
Solid-State Timer Installation...............................................15
Solenoid Connection..........................................................15
Timer and Solenoid Specifications..................................15
Preliminary Start-Up Check .................................................17
Maintenance Information.....................................................18
Operational Checklist ........................................................18
Filter Removal and Installation.........................................18
Dust Disposal ......................................................................19
Compressed Air Components...........................................19
Optional Equipment................................................................21
Fan Blower ..........................................................................21
TBI and TRB Style Damper and Silencer Support
Bracket.................................................................................22
Hopper Access ...................................................................23
55-Gallon Drum Pack .........................................................23
Rotary Valve and Transition..............................................25
Magnehelic®Gauge ..........................................................26
Photohelic®Gauge ............................................................27
Delta P Control....................................................................29
Delta P Plus Control...........................................................30
Inlet Plenum ........................................................................31
High Flo Inlet Plenum.........................................................31
Extended Dirty-Air Plenum ...............................................32
Air Management Module..................................................32
Platforms and Ladders ......................................................33
Cold Climate Kit...................................................................34
Explosion Vent ....................................................................35
Sprinkler...............................................................................35
Troubleshooting......................................................................36
Appendix A - Clean Change
Bag-In/Bag-Out Filter and Liner System......................... A-1
Product Information............................................................ B-1
Service Notes...................................................................... B-2
Donaldson Industrial Air Filtration Warranty ................. B-5

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 recommends process owners consult experts in combustion risks to ensure these responsibilities are met.
Some processes may involve materials or processes which have inherent fire and explosion hazards. The process
owner retains responsibility to comply with applicable codes and standards and to manage the risks associated
with the process or materials. 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.
Donaldson may provide referrals to consultants and/or 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 collection 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 can provide helpful insights on the availability and features of various products, process
owners should consult with combustible dust experts and/or process safety experts before making actual product and
mitigation strategy selections.
Donaldson recommends all industrial air filtration system designs be reviewed and approved by an expert consultant
responsible for the integrity of the system design and compliance with applicable codes and standards. It is the
process owner’s responsibility to understand 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
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.
Safety Communication

Downflo Evolution, DFE 2-8 to 5-80
2
Description
The Downflo®Evolution dust collector is a continuous-
duty, modular collector with cartridge-style filters.
The downward airflow design delivers high filtration
efficiency while using less energy. Continuous duty
means the filters can be pulse cleaned on-line without
interrupting airflow through the collector. The filters are
pulse-cleaned in sequence, one set at a time, without
turning the collector off. Each standard collector is two
or three filter columns wide by two, three, four, or five
filter rows high by two filters deep.
Designed to increase the versatility of the collector,
standard options include abrasion-resistant inlets,
extended dirty-air plenums, air management modules
and clean change options.
Downflo Evolution collectors are intended for filtration
of nuisance dust where the dust loading to the collector
is less than five grains per cubic foot. Some typical
applications include metal grinding, plasma cutting,
dry bulk, pharmaceutical, thermal spray, welding,
metal manufacturing, glass, and food processing. Each
application is different and selecting the correct filter
for the application and dust being collected is important.
Contact Donaldson Torit for selection assistance.
• Ambient, extremely fine, and non-fibrous dusts,
typically are well served by Ultra Web®filters
which offer high efficiency and performance on fine
particulate.
• Fibrous dusts often benefit from a filter with an open-
pleat design, such as Fibra-Web®.
• Operations involving high temperature and high
humidity may require special attention. Temperature,
moisture content, and chemistry issues may also
require custom collector design.
• Hygroscopic dust such as fertilizer, salt, and sugar
should be handled under a controlled, low humidity
environment.
• Flammable or explosive dust may require customized
collector design options.
• Applications with high hydrocarbon or high oil
content may require special treatment or filter media.
Purpose and Intended Use
Misuse or modification may result
in severe personal injury and/or
property damage.
Do not misuse or modify.

3
Donaldson Company, Inc.
Collector Operation
Operation
During normal operation, dust-laden air enters the
collector through the dirty-air inlet, which is positioned
over the venturi section of the dirty air plenum. Airflow
is directed downward through the collector over the
venturis and heavier particulate falls directly into the
hopper. The filters remove fine particulate allowing
filtered air to pass through the filters to the clean-air
plenum where it discharges through the clean-air outlet.
Filter cleaning is completed using pulse-jet technology.
A solenoid and diaphragm valve aligned to each row
of filters provides the pulse cleaning. The cleaning
sequence starts at the top filter row and continues down
through the module. Removal, inspection, or replacement
of filters can be accomplished from outside the collector
by removing the filter access cover and sliding the filters
out.
Rating and Specification
Information
General rating and specification information can be
found in the product literature provided with the collector
or available on the Donaldson website. For specific
load values for a collector, see the Specification Control
Drawing shipped with the collector.
compressed-air supply
Filter Cleaning Operation
hopper
clean-air outlet
Normal Operation
cartridge
filter
dirty-air inlet
diaphragm
valve

Downflo Evolution, DFE 2-8 to 5-80
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.
Turn compressed air supply OFF, bleed and
lock out lines before performing service or
maintenance work.
Site selection must account for wind, seismic
zone, and other load conditions when selecting
the location for collectors.
Codes may regulate acceptable locations for
installing dust collectors. Consult with the
appropriate authorities having jurisdiction to
ensure compliance with all national and local
codes regarding dust collector installation.
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.
Do not set compressed-air
pressure above 100-psig as
component damage can occur.
All compressed air components must be sized
to meet the system requirements of 90-100-psig
supply pressure.
The compressed-air supply must be oil
and moisture free. Contamination in the
compressed air used to clean filters will result
in poor cleaning, cleaning valve failure, or poor
collector performance.
Purge compressed air lines to remove
debris before connecting to the collector’s
compressed air manifold.

5
Donaldson Company, Inc.
The collector is suitable for either indoor or outdoor
installations. Reference the Rating and Specification
Information.
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.
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
and compressed air connections, 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.
Site Selection
This collector can be located on a foundation or
structural framing.
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 all lifting points provided.
Use clevis connectors, not hooks, on lifting slings.
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.

Downflo Evolution, DFE 2-8 to 5-80
6
X
Typical Installation
Typical Installation
1. Place hopper discharge-side up on ground or other level
surface and attach legs to hopper.
2. Assemble leg cross braces.
3. Turn hopper and leg assembly over and lift into position
over anchor bolts.
4. Level hopper.
5. Tighten all fasteners securely, including all anchor bolts.
Tighten all hardware
before removing crane.
6.* Apply 1/4-in diameter rope-type sealant to hopper
flange.
7. Lift collector over leg and hopper assembly and lower
slowly.
8. Secure with bolts, washers, and nuts supplied.
9.* Apply 1/4-in diameter rope-type sealant around inlet
opening.
10. Lift inlet onto collector. Secure with bolts, washers, and
nuts supplied.
Tighten all hardware before removing
crane.
11. Remove crane.
12. Apply sealant to hopper/cabinet and cabinet/inlet seam.
angle not to
exceed 30°
from vertical
(min 60°
from horizontal)
Do Not lift with
this orientation
Apply sealant
after marriage of
hopper to cabinet
and cabinet to inlet
seam (step 12)
*1/4-in diameter rope-type
sealant (steps 6 and 9)
module flange
3/8-in flat washer
3/8-16 x 1-in bolt
Steps 1-2
Step 10
Steps 3-6
Steps 7-9
*The 1/4-in diameter rope-type sealant supplied with the
collector is temperature sensitive. It may soften and become
difficult to work with at elevated temperatures. Store rope-type
sealant in a cool location before use.

7
Donaldson Company, Inc.
Standard Equipment
Standard Downflo Evolution collectors consist of
collector module, inlet box, hopper, and legs. The legs
and hopper are assembled first and the collector is
placed in position using a crane or forklift.
Field Assembly
2. Set the hopper on the ground or a flat surface
with the collector connection flange down. The
discharge opening on the hopper base should be
oriented up.
3. Use drift pins to align holes.
4. Reference the Leg Positioning and Leg and Cross
Brace Assembly drawings. Attach the legs to the
hopper gussets using the hardware supplied.
5. Join multiple hoppers together at hopper gussets
using the hardware supplied. Do not tighten
hardware at this time.
6. Turn leg and hopper assembly over and position over
anchor bolts. Secure each leg pad to the foundation
anchor bolts with customer-supplied flat washers
and nuts. Do not tighten hardware at this time.
7. Level hopper.
8. Tighten all hardware securing legs, cross braces,
hopper gussets, and foundation anchor bolts.
Hopper Installation
There are four hopper styles offered for the Downflo
Evolution. A single module hopper spanning a single
collector module with two or three filter columns. A
double module hopper spanning a pair of collector
modules with two filter columns thereby accommodating
four filter columns. A taller, steeper, single module
hopper spanning one collector module with two filter
columns. A single module screw conveyor hopper
spanning one collector module with two filter columns.
All four hopper styles except the screw conveyor hopper
provide a 10-inch square discharge opening. The screw
conveyor hopper provides a single 18-inch discharge
opening.
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.
Turn compressed air supply OFF, bleed and
lock out lines before performing service or
maintenance work.
Field assembly of collector may be required due to
truck capacity, crane capacity, or specific customer
requirements. A detailed instruction drawing, shipped
with each collector will provide specific assembly and
lifting instructions.
Tighten all hardware before
removing crane to prevent
personal injury and/or property damage.
Leg Installation
Leg sets for standard collector sizes are shown in the
Rating and Specification Information. 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.
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 suitable anchors.

Downflo Evolution, DFE 2-8 to 5-80
8
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.
Leg and Cross Brace Assembly
flat washer
hex nut
hex nut
cross brace
leg
flat washer hex bolt
flat washer
hex bolt
flat washer leg
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).
Leg Positioning
single module dual module 3-module
DFE 3-72
DFE 2-8, 3-12,
4-16 and 5-20
DFE 3-24, 4-32
and 5-40
DFE 4-48
and 5-60
DFE 2-12, 3-18,
4-24 and 5-30
DFE 3-60 and 4-80DFE 3-48,
4-64 and 5-80
dual module
DFE 3-36

9
Donaldson Company, Inc.
Detail A
Module Assembly
Two cranes are required to lift and assemble modules.
1. Remove the protective cover from the end of each
module.
2. Remove one column of access covers, filters,
venturis, and yokes from the joint side of each
module as shown in Detail A.
3. Remove outlet cover from the bottom of the clean-air
plenum and set aside.
4. Apply a generous amount of sealant to one module to
create an airtight seal between the clean- and dirty-
air plenums as shown in Detail B.
5. Lift both modules into position using two cranes.
6. Use drift pins to align the bolt holes in the mating
flanges.
yoke, see Detail E
clean-air
plenum
outlet cover
see Detail H
filter access cover
see Detail F
dirty-air
plenum

Downflo Evolution, DFE 2-8 to 5-80
10
7. Bolt the modules together using 1/2-13 and 3/8-16 x 1
1/4-in bolts, washers and nuts as shown in Details B,
C and D. Do not tighten hardware at this time.
8. Check that all joints and flanges are flush and tighten
hardware starting with the joint between the
clean- and dirty-air plenums. Remove excess
sealant.
Detail B
Detail C
Detail D
3/8-16 x 1-in bolt
flat washer
sealant
module flange
module flange
lock washer
3/8-16 hex nut
flat washer
1/2-13 x 1 1/4-in bolt
1/2-in flat washer
sealant
1/2-in flat washer
1/2-in lock washer
1/2-13 hex nut
sealant
dirty-air
plenum
clean-air
plenum
All hardware is 3/8-16 unless otherwise specified

11
Donaldson Company, Inc.
Yoke, Venturi and Filter Installation
Installing yokes requires two
people.
1. From the clean air plenum (to access, remove the
outlet cover, see Detail I), thread a 3/8-in hex jam nut
and 3/8-in flat washer to the shoulder of each of the
three yoke rod ends. See Detail G.
2. Starting at the top access port work downward.
Orient the yoke as shown in Detail E and insert
into the housing so the yoke is positioned in the
appropriate holes in the tube sheet. From the filter
section, have one person hold the yoke in position
while another person installs a 3/8-in flat washer and
3/8-in hex nut on each yoke rod end from the clean-
air plenum. Do not tighten hardware at this time.
3. Adjust jam nut against the filter cartridge panel. Have
one person hold the yoke in position as shown in
Detail F while another person tightens the three hex
nuts from the clean-air plenum. Repeat to install all
yokes.
4. Apply sealant to venturi as shown in Detail H. Slide
venturi over the yoke with sealant end first. Hold
venturi in place while installing venturi hardware
(7/16 x 3/4-in thread forming screws and 1/2-in
gasket washers) from the clean-air plenum.
5. Slide the filter cartridges into the collector on the
yoke gasket-end first. Replace access cover and
tighten securely by hand following instructions found
in Maintenance Information. Repeat for all filter
cartridges.
6. Replace the outlet cover on the bottom of the clean-
air plenum shown in Detail I.
Detail E
Detail F
yoke
access
cover
yoke, see Detail E
filter
cartridge

Downflo Evolution, DFE 2-8 to 5-80
12
Detail I
Detail H
Detail G
filter cartridge panel 3/8-in flat washer
3/8-in hex nut
venturi
3/8-in hex jam nut
1/2-in gasket
washer
yoke shoulder
7/16 x 3/4-in
thread forming
screw
sealant detail
clean-air plenum
3/8-in
flat washer
7/16 x 3/4-in
thread-forming
screw outlet cover

13
Donaldson Company, Inc.
Electrical Wiring
1. Remove the plastic pipe plug from the collector’s air
manifold and connect the compressed-air supply
lines. Use thread-sealing tape or pipe sealant on all
compressed-air connections.
2. Install a customer-supplied shut-off valve, bleed-
type regulator with gauge, filter, and automatic
condensate valve in the compressed-air supply line.
3. Set compressed-air supply pressure to a level
suitable for the filters (90-psig). The pulse-cleaning
controls are factory set to clean one or more filters
every 10-seconds during a cleaning cycle.
Compressed Air Installation
Turn compressed air supply OFF,
bleed and lock out lines before
performing service or maintenance work.
A safety exhaust valve should be used to
isolate the compressed air supply. The safety
exhaust valve should completely exhaust
pressure in the collector manifolds when
closed, should be capable of being interlocked
with fire or explosion mitigation equipment
and should include provisions to allow closed-
position locking.
Do not set compressed-air
pressure above 100-psig as
component damage can occur.
All compressed air components must be sized
to meet the system requirements of 90-100-psig
supply pressure.
The compressed-air supply must be oil
and moisture free. Contamination in the
compressed air used to clean filters will result
in poor cleaning, cleaning valve failure, or poor
collector performance.
Purge compressed-air lines to remove
debris before connecting to the collector’s
compressed-air manifold.
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.
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.

Downflo Evolution, DFE 2-8 to 5-80
14
Compressed Air and Component Installation
Turn power off and lock out
all power before performing
installation, service, or maintenance work.
Turn compressed air supply OFF, bleed and
lock out lines before performing service or
maintenance work.
shut-off valve/safety exhaust valve*
air regulator* automatic
condensate
valve*
compressed-air
supply*
bleed-type
air filter*
*customer supplied

15
Donaldson Company, Inc.
1. Using the wiring diagram supplied, wire the fan
motor, fan-motor starter, solid-state timer, and
solenoid valves. Use appropriate wire gauge for
rated amp load as specified by local codes.
2. Plug the program lug into the pin that corresponds
with the number of solenoid valves controlled for
3-10 PIN. For 20 and 32 PIN solenoid controls, set
the switch positions on the DIP switch labeled LAST
CHANNEL to the corresponding number of pulse
valves using the chart printed on the timer board.
3. With power supply ON, check the operation of the
timer and valves. The valves should open and close
sequentially at factory set 10-second intervals.
4. If a gauge or similar device is used to control the
solid-state timer, the jumper on the pressure switch
portion of the timer should be removed. The solenoid
valves pulse only when the differential pressure
reaches the high-pressure setpoint. The valves will
continue to pulse until the low-pressure setpoint is
reached.
The solid-state timer voltage
must match the voltage of the
rating of the timer provided (typically 120 VAC,
240 VAC also available).
Do not mount the solid-state timer directly
to the collector as mechanical vibration can
damage the timer.
Solenoid Connection
The collector is equipped with electric solenoid valves
(typically 120V) that controls the pulse-cleaning valves,
which in turn clean the filters.
Solenoid enclosures are mounted near or on the
collector’s compressed-air manifold.
Wire the solenoids to the solid-state timer following the
wiring diagram supplied with the collector. Filter life and
cleaning operation will be affected if not wired correctly.
Timer and Solenoid Specifications
Power to the solid-state timer is supplied to Terminals
L1 and L2, which are intended to operate in parallel
with the fan starter’s low-voltage coil. On fan start-up,
power is supplied to the timer and the preset OFF time is
initiated. At the end of the OFF time, the timer energizes
the corresponding solenoid valve to provide the ON time
cleaning pulse for one diaphragm valve and then steps to
the next until all filters have been cleaned.
To pulse when the fan is OFF, install a toggle switch as
shown on the Solid-State Timer Wiring Diagram. When
the toggle switch is ON, the timer receives power and
energizes the solenoid valves’ pulse-cleaning operation
even though the fan is turned OFF.
The solid-state timer is used to control the filter cleaning
system. Available options include 3, 6, 10, 20, or 32-pin
solenoid valve controls.
Electrical installation, service
or maintenance work during
installation 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 installation, service, or
maintenance work.
Do not install in classified hazardous
atmospheres without an enclosure rated for
the application.
Solid-State Timer Installation

Downflo Evolution, DFE 2-8 to 5-80
16
Input
105-135V/50-60Hz/1Ph
Output Solenoids
The load is carried and turned ON and OFF by the 200
watt maximum-load-per-output solid-state switch.
Pulse ON Time
Factory set at 100-milliseconds, or 1/10-second.
Do not adjust pulse ON time
unless the proper test equipment
is available. Too much or too little ON time can
cause shortened filter life.
Pulse OFF Time
Factory set at 10-seconds, adjustable from 1.5-sec
minimum to maximum 30-seconds.
Operating Temperature Range
-20° F to 130° F
Transient Voltage Protection
50 kW transient volts for 20-millisecond duration once
every 20 seconds, 1% duty cycle.
Solenoid Valves
115-Volt at 19.7 watts each
Compressed-Air
Set compressed-air supply pressure to a level suitable
for the filters (90-psig). The pulse-cleaning controls are
factory set to clean one or more filters every 10-seconds
during a cleaning cycle.
Do not increase supply pressure
above 100-psig as component
damage can occur.
1FU
2FU
3FU
208-230V
60 Hz/3Ph
IL1
IL2
IL3
1M 1OL 1T1
1T2
1T3
230V
115V
H1 H2
H3 H4
X1 X2
stop
start
1M
1M
1TGS
OFF time ON time LAST CHANNEL
LAST CHANNEL SWITCH SETTINGS
4FU, 3A
105 to 135 V
50-60 Hz
COM
L1
L2
L3
L1 L2 2
1
16 8 24 1
1 2 43 5
32
31
30
29
28
27
26
25
24
23
22
00000
00001
00010
00011
00100
00101
00110
00111
01000
01001
01010
21
20
19
18
17
16
15
14
13
12
11
01011
01100
01101
01110
01111
10000
10001
10010
10011
10100
10101
10
9
8
7
6
5
4
3
2
1
10110
10111
11000
11001
11010
11011
11100
11101
111110
111111
O
N
0:OFF 1:ON
Solid-State Timer Typical Wiring Diagram
Disconnect Blower Starter Control Box
fan
motor
solenoid
valves
control
logic
power
supply
timing
logic
pressure
switch
Disconnect, fuses, low voltage blower starter, and 1TGS switch are customer-supplied.
Use wiring diagram provided with collector
Wiring by others
Wiring by factory

17
Donaldson Company, Inc.
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.
Turn compressed air supply OFF, bleed and
lock out lines 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.
Optional fans over 600 lbs must be
independently supported.
Preliminary Start-Up Check
5. Check that fan exhaust damper is set to the fully-
closed position.
6. Check and remove all loose items in or near the inlet
and outlet of the collector.
7. Check that all remote controls and solenoid
enclosures (if applicable) are properly wired and all
service switches are in the OFF position.
8. Check that all optional accessories are installed
properly and secured.
9. Turn power ON at source.
10. Turn the compressed-air supply ON. Set
compressed-air supply pressure to a level suitable
for the filters (90-psig).
11. Turn fan motor ON.
12. Adjust airflow with the exhaust damper.
Excess airflow can shorten filter
life, cause electrical system
failure and fan motor failure.
13. Turn powered hopper discharge devices 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.