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 TM 55-1905-223-24-11
1 Use a multimeter and, test for proper voltage across the poles marked 220 and 220/110 on the
macerator terminals on the circuit card in the control module assembly. Refer to FIGURE 3-2 for
terminal identification.
2 The voltage should be 220-240 Vac.
3 If there is no voltage at the terminals, replace the circuit card assembly (paragraph 2-17).
4 If the correct voltage reading is obtained on the terminals, go to the next step (c).
WARNING
SHOCK HAZARD. Turn electrical power OFF.
(c) Turn the electrical power OFF to the sanitary unit and check the waste disposer (macerator) leads in
the control module assembly for loose or broken leads (paragraph 2-17). Refer to (2) FIGURE 3-2 for
terminal identification on the circuit card. Tighten or correct as required.
1 Check for proper operation.
2 If the motor is still inoperative, go to next step (d)
WARNING
SHOCK HAZARD. Turn electrical power OFF.
(d) Turn the electrical power OFF.
(e) Remove the electrical box cover on the inoperative pump to reveal the cable connections (paragraph
1 Position the cover away from possible contact with the electrical connections.
2 Turn the electrical power ON and place the sanitary unit in a CONTINUOUS mode (paragraph 2-6b).
3 Use a multimeter and check the voltage on the motor terminals.
4 If there is no voltage present, replace the electrical routing cable to the waste disposer motor
3-11
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