0016
TM 1-4920-924-13&P
AVIATION SHOP EQUIPMENT CONTACT MAINTENANCE (AV SECM) SYSTEM MAINTENANCE
INSTRUCTIONS FOR POWER INVERTER - (CONTINUED)
INSTALL
WARNING
Disconnect electrical power including batteries before removing and installing components
involving electrical power IAW TM 9-2320-332-10. DO NOT attempt to service or make any
adjustments, connections or re-connections of wires until electrical power including batteries
have been disconnected. Failure to observe warning could result in PERSONAL INJURY
OR DEATH to personnel.
1.
Install six 3/8-24 X 0.75 hex head bolts (Figure 1, Item 2), twelve 3/8 inch lat washers (Figure 1, Item
3), six 3/8 inch lock washers (Figure 1, Item 4) and six 3/8-24 inch hex nuts (Figure 1, Item 5) on power
inverter (Figure 1, Item 1) and secure power inverter (Figure 1, Item 1) to second shelf of SECM workbench
assembly.
2.
Feed green, white, black, red and blue wire through bottom of AC wiring compartment (Figure 3, Item 3)
and secure 90 degree elbow (Figure 3, Item 19) to bottom of AC wiring compartment (Figure 3, Item 3)
with locknut (Figure 3, Item 20).
3.
With multi-meter, ensure there is no voltage between L1 (Figure 3, Item 10), L2 (Figure 3, Item 11) and L3
(Figure 3, Item 12) terminals and the ground terminal (Figure 3, Item 8).
4.
Attach green wire to the ground terminal (Figure 3, Item 8).
5.
Attach white wire to the neutral terminal (Figure 3, Item 9).
6.
Attach blue wire to the L3 terminal (Figure 3, Item 12).
7.
Attach red wire to the L2 terminal (Figure 3, Item 11).
8.
Attach black wire to the L1 terminal (Figure 3, Item 10).
9.
With multi-meter, ensure there is no voltage between the positive (Figure 3, Item 14) and ground wire
(Figure 3, Item 17).
10.
Feed positive wire (Figure 3, Item 14) through bottom of cable clamp (Figure 3, Item 16) on bottom of DC
input wiring compartment (Figure 3, Item 4) and secure positive wire (Figure 3, Item 14) to positive lug
(Figure 3, Item 13) by tightening positive lug (Figure 3, Item 13).
11.
Feed ground wire (Figure 3, Item 17) through bottom of cable clamp (Figure 3, Item 16) on bottom of DC
input wiring compartment (Figure 3, Item 4) and secure ground wire (Figure 3, Item 17) to ground lug
(Figure 3, Item 18) by tightening ground lug (Figure 3, Item 18).
12.
Tighten four screws (Figure 3, Item 15) on two cable clamps (Figure 3, Item 16).
13.
On left side of power inverter (Figure 2, Item 1) secure the AC wiring compartment cover (Figure 2, Item 2)
to the AC wiring compartment (Figure 2, Item 3) by installing four screws (Figure 2, Item 7).
14.
On right side of power inverter (Figure 2, Item 1) secure the DC input wiring compartment cover
(Figure 4, Item 6) to the DC input wiring compartment cover (Figure 2, Item 6) by installing four screws
(Figure 2, Item 5).
15.
On right hand side of power inverter (Figure 4, Item 1) install ground wire (Figure 4, Item 22) and secure with
ground lug (Figure 4, Item 2).
16.
Perform Maintenance Operational Check (MOC).
END OF TASK
END OF WORK PACKAGE
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