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
