Donaldson Torit Checker board Manual

Installation
and Operation Manual
IOM-72206-01
Revision 4
Checker™board Control Panel
Throughout this manual
statements indicating
precautions necessary
to avoid equipment failure are
referenced in a Note. Statements
indicating potential hazards that
could result in personal injury or
property damage are referenced
in a Caution! box.
Installation,
Operation, Service
and Replacement
Parts Information
This manual is property of the owner. Leave with the unit when set-up and
start-up are complete. Donaldson Company reserves the right to change design
and specifications without prior notice.
PANEL
STOP
CLEAN START CLEAN SERVICE INTERVAL
SET POINT ADJUSTMENT
CONSTANT
CLEAN
DOWN
TIME
CLEAN
SERVICE
INTERVAL
LIGHT
RESET
AIR FLOW
SET POINT INDICATOR
FILTER PRESSURE DROP
P
MAINTENANCE REQUIRED
PANEL
CLEANING FAILURE
FILTER RUPTURE
FILTER PLUGGED
TEMPERATURE
SERVICE INTERVAL
BLOWER
OVERCURRENT
BLOWER ROTATION
COMPRESSED AIR

Donaldson Company, Inc.
2
Caution!
Application of Dust Control Equipment
• Combustible materials such as buffing lint, paper, wood, aluminum or steel dust, weld
fume, or flammable solvents represent fire or explosion hazards. Use special care when
selecting and operating all dust or fume collection equipment when combustible
materials are present to protect workers and property from damage due to fire and/or
explosion. Consult and comply with National and Local Codes relating to fire or
explosion and all other appropriate codes when determining the location and operation
of dust or fume collection equipment.
• When combustible materials are present, consult with an installer of fire extinguishing
systems familiar with these types of fire hazards and local fire codes for
recommendations and installation of fire extinguishing and explosion protection
systems. Donaldson dust collection equipment is not equipped with fire extinguishing
or explosion protection systems.
• DO NOT allow sparks, cigarettes or other burning objects to enter the hood or duct of
any dust or fume control equipment as these may initiate a fire or explosion.
• For optimum collector performance, use only Donaldson replacement parts.
Warning – Improper operation of a dust control system may contribute to conditions in the
work area or facility that could result in severe personal injury and product or property
damage. Check that all collection equipment is properly selected and sized for the intended use.

Checker board Control Panel
3
This manual contains specific
precautionary statements relative to
worker safety. Read thoroughly and
comply as directed. Discuss the use
and application of this equipment
with a Donaldson representative.
Instruct all personnel on safe use and
maintenance procedures.
Data Sheet
Model Number _______________________________ Serial Number ________________________________
Ship Date ____________________________________ Installation Date ______________________________
Customer Name ____________________________________________________________________________
Address ____________________________________________________________________________
____________________________________________________________________________
Filter Type ____________________________________________________________________________
Accessories ____________________________________________________________________________
Other ____________________________________________________________________________
Contents
Checker board Control Panel .............................. 4
Inspection on Arrival ........................................... 4
Operation ............................................................. 4
Pulse Cleaning Operation .............................. 4
Standard Features ................................................ 6
ON Display .................................................... 6
Airflow ........................................................... 6
Filter Pressure Drop ....................................... 6
Setpoint Indicator .......................................... 7
Setpoint Adjustment ....................................... 7
Mode .............................................................. 8
Maintenance Required................................... 8
Installation ......................................................... 10
Mounting Instructions .................................. 10
Pneumatic Sensor Line Connection .............. 10
Thermistor.................................................... 10
Current Sensor Wiring ................................. 10
Electrical Installation ................................... 12
Primary Voltage....................................... 13
Pneumatic Installation .................................. 18
Solenoid Connection ................................ 19
Preliminary Start-Up Check ............................... 20
Start-Up ............................................................ 20
Calibration ................................................... 20
Blower Rotation ........................................... 21
START CLEAN, STOP CLEAN Adjustment 22
Service Interval ............................................ 22
Troubleshooting ................................................. 23
Replacement Parts ............................................. 27
Pneumatic Installation .................................. 28
Pneumatic Connectors ................................. 30
Transformer ................................................. 31
Checker board Assembly Kit ....................... 32
Warranty............................................................ 36

Donaldson Company, Inc.
4
Checker board Control Panel
The Checker board provides cleaning control,
diagnostic review of the operational parameters,
diagnostic review of the system components, and a
record of operational data and fault conditions for
future review. The operator interface provides
control of unit functions and operational status
information.
The design allows for a host computer to remotely
control the unit, change operational parameters,
and check operational status.
Inspection on Arrival
1. Unpack and open the Checker board enclosure
by loosening the clamp screws on the sides.
Remove packing materials. Compare
components received with the packing list.
2. Inspect unit on delivery.
3. Report any damage to the delivery carrier.
4. Request a written inspection report from the
Claims Inspector to substantiate claim.
5. File claims with the delivery carrier.
6. Report incomplete shipments to the delivery
carrier and your Donaldson representative.
Items shipped loose include:
Control box Safety filter
Current sensor board Connector, tube to tube
Twisted pair cables Print 3EA-37129
Clear tubing, two 35-ft Label stickers, 1/4 x 4-in
Black tubing, 35-ft long
Tools Required
Wire strippers Wire cutter
Knife Needle nose pliers
Crescent wrench Channel lock pliers
Screw driver, 5/16-in wide and 9/64-in narrow slot tip
Hole knockout: 1/2-in connector use .859 to .906
and for 3/4-in connection use 1.094 to 1.141.
Supplies Required
Conduit, 1/2 and 3/4-in Grounding lugs
Elbow connectors Wire ties
Straight connectors Wire nuts
Wire, green/white/black/red, #16, 14, or 12 awg
Operation
The Checker board is used to control, diagnose,
and troubleshoot Donaldson Torit dust collectors.
The microprocesser-based control can be
programmed to control solenoid valves used for
filter cleaning, control the blower motor starter,
control setpoints used to start and stop the filter
cleaning operation, monitor and diagnose the
mechanical and electronic system components, and
store diagnostic readings for up to one year.
Operating system parameters, abnormal operating
conditions, and mechanical failure messages appear
on the Checker board display. It also allows a host
computer to control the unit, change operational
parameters, and check operational status from a
remote location.
Pulse Cleaning Operation
The Checker board can be set to control the filter
cleaning operation of the unit, including starting
and stopping at adjustable setpoints, initiating the
pulse, pulse sequence, and pulse duration. The
Checker board also provides the logic to control
alternate cleaning modes.
The microprocessor compares the sensor readings
with the stored values to determine the operational
health of the system. This comparison can indicate
ruptured or plugged filters, cleaning system
component malfunction, excessive temperature,
and blower motor overload due to excess air flow
or motor failure. The microprocessor also has an
extensive self-diagnostic test program that provides
technical assistance to the service technician when
necessary.

Checker board Control Panel
5
A built-in memory stores operational data at preset
intervals and stores all fault indications for
approximately one year before overwriting and
replacing the oldest information. This data storage
assists the service technician by providing accurate
problem diagnosis of intermittent system failures.
The Checker board has an RJ-11 connector that
allows access by a host computer. This connection
provides two-way communication and allows
changes to operational parameters, check
operational status from a remote location and
retrieval of current operating conditions. Using
host computer software addressing, one computer
can provide setpoint adjustment, start/stop, and
monitoring of numerous collectors. The board also
accepts a remote ON/OFF push button or an
external control voltage source to actuate the board.
Checker board Display Panel
PANEL
STOP
CLEAN START CLEAN SERVICE INTERVAL
SET POINT ADJUSTMENT
CONSTANT
CLEAN
DOWN
TIME
CLEAN
SERVICE
INTERVAL
LIGHT
RESET
AIR FLOW
SET POINT INDICATOR
FILTER PRESSURE DROP
P
MAINTENANCE REQUIRED
PANEL
CLEANING FAILURE
FILTER RUPTURE
FILTER PLUGGED
TEMPERATURE
SERVICE INTERVAL
BLOWER
OVERCURRENT
BLOWER ROTATION
COMPRESSED AIR
Red Amber Green

Donaldson Company, Inc.
6
Standard Features
In sections Airflow, Filter Pressure Drop, Setpoint
Indicator, and illustrations Airflow Display and
Filter Pressure Drop and Setpoint Indicator Display
are descriptions and illustrations of two of the
windows located on the cover of the Checker board
enclosure.
ON Display
The green ON indicator light on the control display
indicates that the board is activated by an external
voltage source, usually the control voltage that
actuates the blower motor starter.
Airflow
The airflow window display uses a light bar to
indicate the operating position based on the airflow
or fan curve information placed in the
microprocessor memory at start-up.
The light bar has 10 segments. From left to right,
the first two are red, the second two are amber, and
the remaining six are green. The initial reading at
start-up should be in the green range. As the filters
accumulate dust, the airflow indicator will move;
the first amber light indicates that the collector
airflow is approximately 40-50 percent of full rated
flow, the first red light indicates a flow of
approximately 25-33 percent of the full rated
airflow. One light is illuminated at a time and
indicates the relative position within the range.
Included with the enclosure are two stickers to be
used on the Checker board display. Apply one
sticker under the circles on the airflow display.
Write in the appropriate airflow as measured in the
system. These measurements can be determined
during start-up and calibration. See Start-Up,
Calibration, and Adjustment on Page 20.
Airflow Display
Filter Pressure Drop
A single window alternately displays the filter
pressure drop and the relative setpoints.
The pressure drop indicator uses a light bar to
indicate the amount of static pressure required to
move the air from the dirty-air chamber to the
clean-air chamber. The light bar has 10 segments.
From left to right, the first six lights are green, the
next two are amber, and the final two are red. Each
light indicates a 3/4-in pressure drop. The display
provides a linear division of the available static
pressure. One light is illuminated at a time and
indicates the relative position within the range.
Filter Pressure Drop and Setpoint Indicator
Red Amber Green
SET POINT INDICATOR
FILTER PRESSURE DROP
P
1.5 3.0 4.5 6.0 7.5
"wg
AIR FLOW
1000* 3000* 7000*5000*
Airflow, cfm
Red Amber Green
*representative values only

Checker board Control Panel
7
Setpoint Indicator
When using the setpoint adjustment window, the
bar display switches to a setpoint display with one
or two lights illuminated. One light illuminated
indicates the setpoint, and two lights bracket the
setpoint.
Setpoint Adjustment
The setpoints are indicated in a ten-light LED bar
graph display labeled Setpoint Indicator. Two
arrow keys on the adjustment display change the
setpoints. Each single press of an arrow key moves
the indicator position a half step to the right or left.
Holding down the arrow key produces a stepping
action.
To use the arrow keys, press one of the three
adjustment buttons. For example, if the START
CLEAN button is pressed, an amber light above the
key will glow and the setpoint bar graph will
change to show the setpoint. Use the arrow keys to
change the setpoint. The lights in the setpoint
indicator bar graph display will show the new
value. When the adjustment is complete, press the
START CLEAN button again and the amber
indicator light will go out. The bar graph will
display the actual filter pressure drop. Adjust the
STOP CLEAN and SERVICE INTERVAL functions
the same way.
The system logic prevents overlap of the START
CLEAN and STOP CLEAN setpoints.
Note: If one of the setpoint functions is left ON, the
microprocessor automatically reverts to
displaying the filter pressure drop after two
minutes.
Setpoint Adjustment Display
STOP
CLEAN
START
CLEAN
SERVICE
INTERVAL
SET POINT ADJUSTMENT
Amber

Donaldson Company, Inc.
8
Mode
The window below the Setpoint Adjustment
window is used to modify the cleaning mode. The
normal cleaning mode provides cleaning only when
the pressure drop is within the range defined by the
START CLEAN and STOP CLEAN setpoints.
Constant Clean ignores the START and STOP
CLEAN setpoints and operates the filter cleaning
system continuously while the blower is running.
Press and hold the Constant Clean button until the
green indicator light illuminates. Press and hold
again to deactivate the Constant Clean mode.
Downtime Clean allows the filter cleaning to
continue after the blower motor is turned off. After
a blower run-down delay, the cleaning mode starts
sequentially pulse cleaning until the end of the
cycle. At the end of the cleaning cycle, the system
shuts down and remains dormant until reactivation.
This mode will remain in effect until turned OFF,
initiating downtime cleaning each time the OFF
button shuts the system down. Press and hold the
Downtime Clean button until the green indicator
light illuminates. Deactivate by holding the button
down until the light goes out.
Service Interval Light Reset
Reset the Service Interval indicator light located in
the maintenance window. The system must be shut
down before the reset button will function. If the
system is ON, the reset button will have no effect.
To reset the indicator light, turn the system OFF,
perform the necessary maintenance such as empty
the collection container, and reset the light before
starting the blower.
Mode Display
Maintenance Required
With the exception of service interval, the
maintenance required window contains a group of
diagnostic functions that indicate an abnormal
conditions. The service interval indicator allows
you to schedule routine service as required by your
system. Each of the fault indicator lights, with the
exception of the service interval, is either reset each
time you press the OFF button or reset automatically
when the abnormal condition ends. A fault light
that resets at shut down remains OFF only if the
fault condition has been corrected. The service
interval light has a separate reset button.
Panel indicates that either the printed circuit board
has self-diagnosed a fault in its operation or the
power supply voltage applied to the board is not
within acceptable limits.
Cleaning Failure indicates that a solenoid valve,
diaphragm valve, or relay failed to operate
resulting in an improper cleaning pulse. This light
also indicates low pressure or complete lack of
compressed air for the cleaning system.
Filter Rupture indicates an unexplained, sudden
decrease in pressure drop across the filters. Verify
this fault condition by examining the air discharge
from the collector. The fault light can also
illuminate as a result of a sudden closure of an inlet
or discharge damper, or other system changes that
cause a rapid decrease in airflow.
Filter Plugged indicates that the pressure drop
across the filters exceed the START CLEAN
setpoint and that the cleaning system cannot lower
the pressure drop measurement below the upper
limit setpoint. If the pressure drop does not appear
excessive, check the START CLEAN setpoint for
proper adjustment.
Temperature preset at shipment, signals that the air
temperature has exceeded the maximum
temperature recommended for the filters installed.
Amber
CONSTANT
CLEAN
DOWN
TIME
CLEAN
SERVICE
INTERVAL
LIGHT
RESET

Checker board Control Panel
9
Service Interval The service interval feature can be
based on a timer function or an external event. If
the setpoint adjustment for service interval
responds, the unit is configured as an elapsed time
indicator and will signal proper service intervals
for the dust collector. The timer can signal any
routine service required. If the setpoint adjustment
function does not work, the unit is configured to
respond to an external signal, such as a high level
indicator.
Blower Overcurrent This light indicates that the
blower motor is exceeding the recommended
horsepower output, including any service factor.
This usually indicates that the system airflow
exceeds the rated operating range. Changing the
damper settings or increasing the external static
pressure are ways of reducing the airflow.
Operating the collector before installing ductwork,
with filter cartridges removed, with the doors
removed, or with the hopper open to the
atmosphere will also create excess flow conditions.
Blower Rotation This fault light indicates that the
blower rotation is incorrect.
Note: Three phase motors only.
Compressed Air This fault light indicates that the
compressed air pressure has fallen below the
recommended minimum value.
Unlabeled lights are for customer-defined fault
indication. Contact Donaldson for further
information.
Maintenance Required Display
MAINTENANCE REQUIRED
PANEL
CLEANING FAILURE
FILTER RUPTURE
FILTER PLUGGED
TEMPERATURE
SERVICE INTERVAL
BLOWER OVERCURRENT
BLOWER ROTATION
COMPRESSED AIR
Red

Donaldson Company, Inc.
10
Installation
Mounting Instructions
Mount the control enclosure in a convenient,
accessible location that provides the best visual
advantage. Mount the enclosure to a wall or
column with little or no vibration and away from
static discharges that could damage components.
Pneumatic Sensor Line Connection
To get reliable signals to the sensors, the pneumatic
sensor lines should not exceed 250-ft. Excess length
can weaken the signal to the point that they are not
readable. Included with the Checker board is 35-ft
of each of the pneumatic lines. Contact Donaldson
if the sensor lines must be longer than 250-ft.
Thermistor
Connect the temperature sensor to the appropriate
connection point on the Checker board using
grounded, shielded, twisted pair wire (50-ft
included), in metal conduit. Locate the thermistor
and thermowell inside the clean-air chamber.
Current Sensor Wiring
The leads that connect the current sensor board to
the main board should be shielded twisted pair
wires (two 50-ft lengths included) enclosed in metal
conduit.
Checker board
fan
motor
Thermistor Assembly Current Sensor Wiring

Checker board Control Panel
11
Pnuematic Installation
clean-air
chamber
dirty-air
chamber
air
regulator
bleed-type
air filter
compressed
air supply
automatic
condensate
valve
shut-off
valve
see Fitting Detail
thermowell
assembly
manifold
diaphragm
valve
solenoid
enclosure
Checker board control, cover removed
low pressure
safety filter
to additional
manifolds as
required

Donaldson Company, Inc.
12
Electrical Installation
Reference the input voltage and motor amp draw
listed on the motor’s nameplate.
In the chart below, locate the amp rating of the
motor and follow appropriate column for 50- or
100-Amp Current Sensor Jumper Position to find
the correct jumper position, A, B, or C. The fourth
column of the chart refers to the number of times
that the motor leads pass through the current
sensor coils.
There are three jumper plugs on the main printed
circuit board as shown in Jumper Position. The
three jumpers must be in the same position for
proper performance. Reference the wiring diagram
supplied with the Checker board.
Jumper Position
Motor Current Sensor Setup Table
Blower Motor
Full-Load Amp
50 Amp Current Sensor
Jumper Position
100 Amp Current Sensor
Jumper Position
Primary Turns
Through Sensor Core
0 to 5 A N/A 2
6 to 10 A N/A 1
11 to 25 B A 1
26 to 50 C B 1
51 to 100 N/A C 1
jumpers
jumper
position A
jumper
position B
jumper
position C

Checker board Control Panel
13
Primary Voltage
Switch Position
Position the voltage switch to correspond to the
incoming power. When pushed to the left, the
switch is set for 90 to 130-Volt AC. When pushed
to the right, the switch is set for 180 to 260-Volt
AC. A customer-supplied transformer must be
provided for all other voltages.
Incoming Voltage, Hot In/ Hot Out
This is the primary voltage source for the board.
Acceptable voltage is 90 to 130 or 180 to 260-Volt
AC, 50 or 60 Hz, Single Phase. The hot wire
connects to the IN terminal. The OUT terminal
provides a convenient point to connect the line
voltage to other output connections that will
operate on the same voltage, such as relays.
Incoming Voltage, Neutral In/ Neutral Out
This is the neutral connection for the primary
voltage source. The primary connection attaches to
the IN side. The OUT side provides common
connections to the other output connections, such
as relays.
ON/OFF
Power to the Checker board should be ON at all
times, except while being serviced. The remote ON/
OFF provides control of the Checker board status
whether it is in standby or active mode. A typical
installation would use the motor starter pull-in coil
voltage to power the ON/OFF circuit, initiating the
active mode any time the motor starter is engaged.
Connecting one terminal to the motor starter coil
voltage and the other terminal to neutral, allows
the Checker board active mode to start and stop in
conjunction with the blower motor.
Voltage Switch
120-Volt 240-Volt
hot in/hot out neutral in/neutral out
Incoming Voltage

Donaldson Company, Inc.
14
EXT IN 1
External input #1, EXT IN, allows the operator to
control the service interval fault light in the
maintenance required panel with an external
device, such as a high level control in a dust
container, instead of using the internal timer. One
terminal connects to neutral. The second terminal
connects to a voltage source, either 120-Volt AC or
24-Volt DC, through a normally open switch
provided by the external fault indication device.
The EXT IN functions only if the configuration in
the microprocessor was factory-set to read this
input rather than the internal clock method of
indicating a time-based service interval. If the
service interval light is controlled by the internal
clock, EXT IN 1 functions the same as 2 through 5.
EXT IN 2 through 5
External input 2 through 5 provides for an external
input from customer-specified indication devices.
One terminal connects to neutral. The second
terminal connects to a voltage source, either 120-
Volt AC or 24-Volt DC, through a normally open
switch provided by the external fault indication
device. When the external switch closes due to a
fault condition, the matching LED illuminates on
the panel and stays lit until the fault switch opens
again. When the service interval function is based
on an external switch, that function always
occupies EXT IN 1.
External Input
+ON/OFF EXT IN #1 EXT IN #2 EXT IN #3 EXT IN #4 EXT IN #5

Checker board Control Panel
15
SER I/O
Serial Port Input/Output, SER I/O is a RJ-11 socket
that provides the connection for monitoring and
control of multiple collectors. Contact Donaldson
for further information.
SER I/O to Computer
Serial Port Input/Output to Computer is a RJ-11
connection located closest to the edge of the printed
circuit board that provides the computer interface,
allows remote ON/OFF, setpoint adjustment, and
monitors conditions by a host computer. Contact
Donaldson for information related to
communication requirements.
Serial Ports
TEMP 1
The Temperature, TEMP 1, is the connection for
the thermistor that monitors the air temperature in
the clean-air chamber.
TEMP 2
For future use.
Temperature 1 and 2 Ports
SER/IO
to computer
TEMP 1 TEMP 2

Donaldson Company, Inc.
16
CUR 1, 2, 3
The Current, CUR 1, 2, and 3 connection blocks
provide input from an external set of current
sensors. See the wiring diagram for proper
connections. The current sensors measure the amp
draw of the blower motor and provides airflow
information through the light bar display.
Current Sensors
Relay 1 through Relay 24
Relay 1 is always used to control the pull-in coil on
the motor starter that starts and stops the system
blower. Relays 2 and higher provide control of the
system solenoid valves used for filter cleaning.
The relay outputs can be 115-Volt AC or 24-Volt
DC. The 24-Volt DC version has a transformer
that supplies DC current to the relays. The 24-Volt
DC version leaves Relay 2 blank to separate the
115 or 230-Volt AC motor starter voltage from the
24-Volt DC used for the solenoid valves.
Relays used for solenoid control can operate up to
three solenoids each. Do not connect more than one
solenoid on any air manifold to a common relay.
Relay 1 through 24
Relay #1
Relays
1 2 3 C
CUR 1 CUR 2 CUR 3

Checker board Control Panel
17
Signal Terminal
The Signal Terminal provides a way to export a
logic signal to a PLC from a transistor-type
optocoupler. Any fault light, except the Service
Interval light and the unlabeled lights, causes the
optocoupler to pass a DC logic signal to a
connected PLC for approximately 0.5 seconds.
Typical circuits to use this signal are illustrated in
Signal Terminal.
Signal Terminal
-
+
ground
100-240 Volt AC signal
- +
signal
- +
ground
100-240 Volt AC
100-240V AC DC OUT DC IN 0 1 2 3 4 5 6 7 10
L N 24-V 0-V COM
100-240V AC DC OUT DC IN 0 1 2 3 4 5 6 7 10
L N 24-V 0-V COM
PLC Sensor DC Power Supply
PLC and an External DC Power Supply

Donaldson Company, Inc.
18
Pneumatic Installation
Install a customer-supplied regulator, filter, dryer,
and lock-out bleed-type isolation valve between the
plant air supply and the dust collector manifold to
allow safe and convenient service.
Install the 1 x 1/4 x 1-in reducing tee at the
connection point of the compressed air supply.
Locate this fitting immediately adjacent to the
manifold. See Fitting Installation. On multiple-
module installations, install fitting between the
manifolds.
Pneumatic Installation
The collector has tubing fittings installed in the clean-
and dirty-air chambers. Attach a section of tubing
from the clean-air chamber to the low pressure fitting
on the enclosure. Attach a section of tubing from the
dirty-air chamber to the high pressure fitting.
Connect a section of 1/4-in OD, 120-psi rated tubing
from the collector’s manifold at the point closest to
the hookup of the plant air supply to the compressed
air line pressure tap on the enclosure. An installation
drawing has been shipped with the Checker board
that illustrates proper connections.
clean-air
chamber
dirty-air
chamber
air
regulator
bleed-type
air filter
compressed
air supply
automatic
condensate
valve
shut-off
valve
see Fitting Detail
thermowell
assembly
manifold
diaphragm
valve
solenoid
enclosure
Checker board control, cover removed
low pressure
safety filter
to additional
manifolds as
required

Checker board Control Panel
19
Solenoid Connection
One of three types of solenoid enclosures, the
weatherproof NEMA 4 with 1/8-in solenoid valves;
the gas-explosion proof NEMA 7 with 1/8-in
solenoid valves; or the dust-ignition proof NEMA 9
with 1/8-in solenoid valves, is mounted near or on
the unit’s compressed-air manifold.
Control Specifications
Input
Low Range: 90-130V/50-60Hz/1Ph
High Range: 180-260V/50-60Hz/1Ph
Output Relay Voltage and Contact Rating:
The output relays are independent of the input
voltage. Relays can accept power from any voltage
source desired.
VDE: 8 amp, 250-Volt AC
UL: 10 amp, 240-Volt AC
CSA: 8 amp, 24-Volt DC
Pulse ON Time
Factory set at 100-milliseconds, or 1/10-second.
Note: 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. The pulse OFF time can
only be adjusted by modifying the parameters
contained in the microprocessor software. Contact
your representative for assistance.
Operating Temperature Range
Ambient 0° F to 140° F.
Relays
There are twenty-four relay positions, twenty-three
on 24-Volt DC systems, that can be used to control
solenoid valves or other filter cleaning devices.
Solenoid Wiring Diagram
Checker board
3 4 5 6 7 8 9 10
SOL
1SOL 6
SOL
5
SOL
4
SOL
3SOL 7
SOL
2
4 3 2 1 0
24-Volt Power Supply
Checker board
3 4 5 6 7 8 9 10
SOL
1SOL 6
SOL
5
SOL
4
SOL
3SOL 7
SOL
2
neutral
110-Volt24-Volt

Donaldson Company, Inc.
20
Preliminary Start-Up Check
1. Check that all connections to the air and
electrical supply are in the correct position
according to the installation print.
2. Check electrical and pneumatic connections for
tightness or leaks.
3. Verify that all electrical systems are properly
grounded.
4. Verify the proper installation of the collector.
5. Check blower rotation by pushing the START-
STOP button ON and OFF very quickly. Proper
rotation is clockwise when looking down on the
top of the motor.
Start-Up
Calibration
The computer requires a calibration procedure to
display the correct airflow. Configure the system at
the maximum airflow used in normal operation of
the system. For example: clean filters, blower inlet
or outlet damper open to the maximum flow, and
operation within the horsepower rating of the
motor.
1. Turn the motor ON and allow it to run for at
least one hour to stabilize the operating
temperature and amp draw. The motor amp
draw may decrease due to run-in of bearings
and belts. Run-in may vary in time from hours
to days.
2. Open the electrical enclosure containing the
Checker board main panel. Press and hold the
push button labeled Airflow Setpoints, located
to the left of Relays 23 and 24, until the panel
fault light located in the Maintenance Required
window on the cover of the enclosure is lit.
Airflow Setpoint Push Button
airflow setpoints
push button