Fujitsu PRIMEQUEST 500A Series Installation Manual page 379

C.1.1.2 Power-on procedure (PRIMEQUEST 520A/520/420)
Remarks: Before turning on power again after disconnecting the power cable from
If the circuit breaker on the power distribution box is switched off because an
overcurrent was detected, a problem such as a short circuit occurred in the main unit.
If the circuit breaker is switched on again under this condition, the circuit breaker on
the distribution panel may be switched off and a burnout may occur in the main unit.
To prevent this problem, do not switch on the circuit breaker again, and call a certified
service engineer.
Power-on procedure
1
Connect the power cable to the ACS of the main unit, and then connect the power
cable to the power distribution box.
C122-E001-10EN
the ACS, wait at least 10 seconds after power-off and then reconnect the
power cable.
Figure C.4 ACS location
C.1 Power-On/Off Procedures for the Main Unit
C-5