Maintenance/Troubleshooting; Vii-A. General Maintenance; Vii-B. Each Operation; Vii-C. Trouble Shooting - Simplex Atlas Operation And Installation Manual

VII-A. General Maintenance

The load bank has been designed to require minimum maintenance. All components have been
chosen for a long, reliable life. Two basic intervals of maintenance are required: each operation and
either every 50 hours of use or 6 months, whichever comes first.

VII-B. Each Operation

The air intake screens and louvers, fan and cooling chamber, and exhaust openings must be
checked for any obstructions or foreign objects. Due to the high volume of air circulated, paper and
other debris can be drawn into the air intake.
During load bank operation, ensure that air is exiting from the exhaust vent.
The load branches should be checked for blown fuses or opened load resistors. To check the fuses
or load resistors, operate the load bank from a balanced 3-phase source and check the three line
currents on the metering screen. The three current readings should be essentially the same. If a
sizable difference is noted, one or more load fuses or load resistors may have malfunctioned.

VII-C. Trouble Shooting

Any of the alarms detailed on page 13 will result in the load bank entering a failure state and dumping
the load. All load steps are locked out until the problem is corrected. Until the failure is investigated
and corrected, the load cannot be reapplied. For possible solutions to the problems causing the
alarms, please consult "VII-D. Troubleshooting" on page 16. If the load bank still won't operate,
please call the Simplex service department at 800-637-8603 ext. 4.
Remove all power before servicing the
load bank. Never operate or service a
load bank that is not grounded.
15

- Maintenance/Troubleshooting

Atlas | Operation and Installation Manual