INSTALLATION, OPERATING AND TROUBLESHOOTING INSTRUCTIONS FOR MODEL A75D / A75DE –
THREE PHASE
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General Maintenance Procedure
Yearly
1. Blow out rectifier/inverter with a low-pressure air hose.
2. Make sure all connections are tight.
3. Perform a visual check on all internal components.
4. Check front panel meters and alarms for accuracy.
4th Year
REPEAT ABOVE WITH THE ADDITION OF:
1. Check relay contacts for pitting or corrosion.
2. Check capacitors for leakage.
7th Year
REPEAT ALL, WITH THE ADDITION OF:
1. Filter, resonating capacitors and control relays should be replaced.
10th Year
REPEAT ALL WITH THE ADDITION OF:
(except replacing capacitors, they should be replaced every 7 years)
1. Check magnetics, components and wiring for signs of excessive heat.
