20
Maintenance and Troubleshooting
CAN I/O Board (PC3) Replacement
1.
Turn off the circuit breakers powering all power supplies.
2.
Remove all connections to the CAN I/O board.
3.
Remove the screws holding the board in place, and carefully remove the failed
CAN I/O board.
4.
Position the new board in the enclosure and secure the board using the screws removed
in
Step 3
. Securely fasten the screws to ensure proper grounding.
5.
Reconnect all connections removed in
Step 2
.
6.
Restore power.
5.11 Ventilation Fan and Filter Maintenance
Each time an intake fan assembly is opened, perform the following:
•
Check the fan blades for dirt and debris. Clean the fan blades to maintain the fan’s
efficiency and to ensure proper cooling. If the fan blades have a large accumulation
of dirt and debris, change the filters more often.
•
Spin the fan blades with a pen or pencil to ensure the bearings are free and the fan is
balanced.
•
Check the filters every year. Clean the filters with water and a mild detergent, such
as dish soap.
•
Compressed air can be used to clean the filter provided the nozzle is held at least 6"
away from the filter, the pressure is no greater than 60 psi, and the air is blown
through the filter opposite the airflow direction as indicated by the arrow stamped
on the filter frame.
Filter Replacement
1.
Turn off the intake fan breaker.
2.
Loosen the
1
/
4
-turn fasteners in the upper corners of the intake fan assembly panel.
3.
Rotate the fan and filter assembly forward.
4.
Slide the filter out of the filter brackets.
5.
Slide a new filter into the filter brackets.
6.
Rotate the fan assembly back.
7.
Tighten the
1
/
4
-turn fasteners.
