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6. SELECTION MAINTENANCE
Inverter requires almost no routine checks. It will function efficiently and its normal operation lifetime
will be longer if it is kept clean, cool and dry.
Especially check for tightness of electrical connections, discoloration or other signs of overheating .
During service inspection, turn off AC main circuit power and wait for charging indicator LED 101 to
extinguish ( or at least 10 minutes) before touching any circuit components. Failure to adhere to this
warning could result in serious or lethal injuries.
(1) Clean up internal dust and dirt
(2) Check for tightness of electrical connection.
(3) Do Mega test
(a) Remove all connection wires from the complete unit when doing Mega test.
(b) Mega test only can be applied on main circuit.
NOTE!! Never do Mega test on control
circuit.
The insulation resistance of DC500V tester should be more than 5 M ohm.
INPUT
POWER
L1 (R)
L2 (S)
L3 (T)
T1 (U)
T2 (V)
T3 (W)
MOTOR
GROUNDING
DC - 500 V TEST METER
S3 / H3
SERIES