Chapter 7: Maintenance and Inspection
Firmware – S2011 and S3012
Revision: 1 (9/98)
64
© Saftronics, Inc.
WARNING
•
Never touch high-voltage terminals in the Inverter. Failure to observe this can result in an electrical shock.
•
Replace all protective covers before powering up the Inverter. To remove the cover, make sure to shut OFF the Molded Case Circuit
Breaker. Failure to observe this can result in an electrical shock.
•
Perform maintenance or inspection only after verifying that the CHARGE LED goes OFF, after the main circuit power supply is turned
OFF. The capacitors are still charged and can be dangerous.
•
Only authorized personnel should be permitted to perform maintenance, inspections or parts replacements. (Remove all metal
objects (watches, bracelets, etc.) before operation. Use tools which are insulated against electrical shock.) Failure to observe this
can result in an electrical shock.
CAUTION
•
The control PC board employs CMOS ICs. Do not touch the CMOS elements. They are easily damaged by static electricity.
•
Do not connect or disconnect wires or connectors while power is applied to the circuit. Failure to observe this can result in personal
injury.
7.1
Periodic Inspection
The FP5/GP5 will function longer if it is kept clean, cool and dry, while observing the precautions listed in
2.3 Choosing a Location to
Mount the Inverter
. Check for tightness of electrical connections, discoloration or other signs of overheating or aging. Use
Table 18
as your inspection guide. Before servicing, turn OFF AC main circuit power and be sure that the CHARGE LED is OFF.
Table 18
Periodic Inspection
Component
Check
Corrective Action
Loose screws.
Tighten.
External Terminals,
Unit Mounting Bolts,
Connectors, etc.
Loose connectors.
Tighten.
Heatsink
Build-up of dust and dirt.
Blow with dry compressed air of 39.2
5
10
4
to 58.8
5
10
4
Pa (4
to 6kg
⋅
cm
2
) pressure.
Printed Circuit Board
Accumulation of conductive dust or
oil.
Blow with dry compressed air of 39.2
5
10
4
to 58.8
5
10
4
Pa (4
to 6kg
⋅
cm
2
) pressure. If dust and oil cannot be removed,
replace the board.
Cooling Fan
For abnormal noise and vibration.
Whether the cumulative operation
time exceeds 20,000 hours or not.
Replace the cooling fan.
Power Elements
Accumulation of dust and dirt.
Blow with dry compressed air of 39.2
5
10
4
to 58.8
5
10
4
Pa (4
to 6kg
⋅
cm
2
) pressure.
Smoothing Capacitor
Discoloration or odor.
Replace the capacitor or Inverter unit.
7.2
Parts Replacement Schedule (Guidelines)
Replace the following parts periodically, for a long, safe, trouble free working life of FP5/GP5.
Table 19
Parts Replacement Schedule
Parts
Interval (Approximately)
Remarks
Cooling Fan
2 to 3 years
Replace with new one.
Smoothing Capacitor
5 years
Replace with new one. (Decided after inspection.)
Breakers or Relays
Decided after inspection.
Fuse
10 years
Replace with new one.
Aluminum Electrolytic Capacitor on PC Board
5 years
Replace with new one. (Decided after inspection.)
NOTE:
Operating conditions are as follows:
Ambient temperature : 30
°
C yearly average
Load factor
: 80% or below
Operation rate
: 12 hours or below/day
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