104
017-882-B0-001 Rev. E (06/2018)
4.0 Maintenance, Continued
Tools Required:
3mm slotted screwdriver
#2 Phillips-head screwdriver
Procedure:
1. Completely shut down the power supply; verify all power
is removed. Ensure utility power is off and battery power
is safely secured (or not installed) in the enclosure
assembly. All connections and cables must be removed
from the power supply. To maintain output to the load,
consider using the APP9015S or APP9022S Service
power supply when installing the MOV board.
2. Remove the inverter module.
3. Loosen fastener, then remove the oil capacitor from its
mounting bracket.
4.
Remove the damaged MOV board from the PDB by
pulling it firmly towards toward the capacitor mounting
bracket.
5. Install the new MOV board into the PDB.
6. Re-install the oil capacitor into its mounting bracket and
tighten fastener.
7. Replace the inverter module.
8. Turn the unit back on and verify the Surge MOV Fail
alarm has cleared.
Fig. 4-2, Removing the Inverter
21-001
06
rev
704-878-
Fig. 4-4, MOV Board Model
MOV Board
Part Number
Fig. 4-3, Capacitor Removed from Mounting
Bracket and MOV Board Location
4.3.3 MOV Board Replacement
Always switch the battery breaker OFF before removing or installing the Inverter Module assembly.
CAUTION!
Align quick connects correctly, and ensure the MOV board is completely seated.
NOTICE
:
Be sure that the new MOV board has the same part number as the damaged board (-20 for 120V and -21 for 240V is
critical).
NOTICE
:
Capacitor
Mounting
Bracket
Inverter
Capacitor
PDB
MOV Board
