INSTALLATION AND TROUBLESHOOTING INFORMATION FOR MODEL A31
PAGE 7 OF 15
8.3
FIELD GROUND TERMINAL
This terminal should be connected to an earth ground. The size of the conductor is based on National
Electric Code Table 250-95 for copper wire at 75 degrees C
8.4
FIELD GROUND & LINE NEUTRAL
A jumper is supplied which connects the bypass line and the inverter output neutral together. This can
be connected to field ground if local codes apply.
8.5
DC INPUT
Make sure that the battery system that is being used is the same number and type of cell as the
nameplate information on the inverter.
***OBSERVE PROPER POLARITY!!***
8.6
CAPACITOR PRE-CHARGE CIRCUIT (S2A-172)
(A) Capacitor pre-charge instructions when the inverter has a DC breaker called DCB and a
pre-charge push button:
Place the inverter on/off switch to the “off” position. Place the DCB to the “off” position.
The battery wires should be connected in proper polarity to the inverter input terminals. The positive
battery wire should be connected to the terminal marked positive (+) and the negative battery wire
should be connected to the terminal marked negative (-).
Push and hold the pre-charge button (PCB).
After the battery is connected wait approximately one (1) minute and the green LED marked “READY”
should illuminate. At this time release the PCB, place the DCB to the “on” position and turn the inverter
on with the DC switch (SW-1).
If the green LED "READY" does not light, check the type and number of cells of the battery to verify that
it is correct.
If the red LED marked “REVERSE POLARITY” illuminates, the battery has not been installed as indicated.
Disconnect the battery wires immediately or damage to the inverter may occur.
CAUTION:
Before replacing the DC fuse or resetting the DC breaker the pre-charge instructions must
be followed before restarting unit or damage to the unit may occur.
(B) Capacitor pre-charge instruction when the inverter has a DC input fuse called F1 and a
capacitor pre-charge connector:
The black pre-charge connector should be inserted in the white connector, which is located inside the
unit on the terminal bracket. The white connector is a dead connection. The inverter’s ON/OFF switch
should be in the OFF position.
The battery wires should be connected in proper polarity in the inverter input terminals. The positive
battery wire should be connected to the terminal marked positive (+) and the negative battery wire
should be connected to the terminal marked negative (-).
The green LED marked "READY" should illuminate after the battery is connected approximately one (1)
minute. At this time, install the black pre-charge connector into the black connector. The black
connector is located next to the white connector inside the unit on the terminal bracket. Turn on the
inverter.
