Maintenance
ASCO Model K875A Outdoor Load Bank
5-2
10-minute intervals until exhaust is clear. Do not apply continuous full load until both intake
and exhaust openings are clear.
3.
Verify that the airflow is in the proper direction.
4.
Assure that there is no recirculation of the exhaust air through the Load Bank.
THREE MONTHS
1.
Remove the access panels and screens, and inspect the load resistors for mechanical
breakdown which is demonstrated by excessive sagging of the elements. Replace worn
resistor elements with new resistor elements as required.
2.
Inspect for broken ceramic insulators. Replace any broken or cracked insulator with a new
ceramic insulator.
3.
Inspect for loose hardware or loose connections. Tighten where required.
4.
Inspect all connections for oxidation or corrosion. Clean the connection or replace the
hardware where required.
5.
Verify that the airflow switch works properly.
6.
Inspect all magnetic contactors to make sure that the contacts are not severely pitted or
corroded. The contacts must move freely and be properly seated.
7.
Clean all dirt and debris out of the Load Bank. This can be accomplished by blowing the
inside of the units with clean, dry compressed air (not to exceed 40 PSI). Eye protection
should be worn when cleaning the Load Bank with compressed air.
8.
Inspect all the wiring for any sign of insulation failure.
9.
Replace all access panels and screens. Tighten all the fastening hardware securely.
10.
Check the indicator lamps on the control panel.
ANNUALLY
The fan/blower motor(s) should be lubricated if required per the motor manufacturer's requirements
and specifications on the motor nameplate.
Inspect exhaust hood and screen.
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