f. Connect the end of the new 3 in. wire (P56A8N) to the 'G" terminal on the new inverter (immediately below the
positive (+) terminal) and tighten the screw to clamp the wire securely. This completes the wiring of the new inverter.
Check that all connections are correct: (Positive to Positive) since reverse polarity connections will blow a fuse in the
PROWATT 800 and may permanently damage the inverter. Insure that all wire screws are tight since loosely tightened
connectors result in excessive voltage drop and overheated wires.
Operation of the Inverter without a proper ground connection may result In
electrical safety hazard.
g. Refer to figure 3. Position the inverter, item (3), on the mounting plate and install the two back 1/4-20 x 1.375 in.
long screws, item (1), with a .250 diameter washer, item (2), on each screw through the two rear holes (Holes A and D of
on the inverter, item (3), then through the .680 long spacer, item (4),
or use approximately seven .250 diameter
washers that will dear the right angle tabs on the front of the mounting plate. Install a .250 diameter washer, item (2), a
.250 diameter lock washer, item (5), and a 1/4-20 nut, item (6), on the 1/4-20 screw below the mounting plate, item (3).
Center the inverter on the mounting plate and tighten the two back screws.
h. From the bottom of the mounting plate line drill a 9/32 or 5/16 diameter hole through the mounting flanges on the
inverter using the front holes (holes B and C of figure 2) in the mounting plate as a guide. Insure that the drill passes
through the mounting flange on the inverter and not into the case of the inverter.
i. Install the fastener hardware as described in step g.
j. Verify that the wiring is correct.
k. Verify that the fan grill on the rear of the inverter is not blocked.
I. Turn all the AGPU switches to OFF. Connect the AGPU battery cable to the AGPU battery.
a. POWER ON. Turn the AGPU on. Refer to TM 55-1730-229-12. Set the inverter ON/OFF switch to ON. The
VOLTS bar graph should indicate 22 to 28 volts DC depending on the voltage at the AGPU power source. If it does not
indicate 22-28 volts, check the connections to the AGPU and DC output voltage. The AMPS bar graph on the inverter
should indicate 0 with no load connected to the AC outlets on the inverter. The OVER TEMP indicator and OVERLOAD
indicator lights should be OFF.
b. LOAD CONNECTION. Turn the inverter OFF. The indicator lights may blink and the internal alarm may sound
momentarily. This is normal. Connect a suitable load (Less than 1000 watts; 8.3 amps 120 Volts Alternating current, 60
hertz) to the AC OUTLET on the inverter. We recommend that you start with a relatively low power load, such as a 100
watt lamp to verify your connections before trying high power loads. The inverter should supply power to the AC load.
c. INDICATORS .
(1) The VOLTS and AMPS bar graph indicators on the front of the inverter indicate battery input voltage and
amps to the inverter. The AMPS should be in the green zone for continuous operation. The inverter will operate for
several minutes when the AMPS are in the yellow zone. Operation with battery voltage or current in the red zone will
result in protective shutdown of the inverter. In the event that the inverter shuts down remove the load and allow the
inverter to cool before adding load.
(2) The OVER TEMP indicator lights and an alarm sounds when the inverter protects itself against overheating.
Remove the load.