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Page Title:
VENTILATION (SUPPLY AND EXHAUST FANS) -Cont |
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 TM 55-1905-223-24-17
Table 2-2. Troubleshooting - CONT
Malfunction
Test or Inspection
Corrective Action
VENTILATION (SUPPLY AND EXHAUST FANS) - CONT
STEP 2.
Check to see that registers, grilles and dampers are installed.
Install or adjust (TM 55-1905-223-24-18).
7.
Fan does not operate.
STEP 1.
Check to see if electrical power to the fan is OFF.
Turn power ON.
STEP 2.
Check for open circuit breakers.
Reset circuit breaker. If it trips again, locate the problem and correct as required (TM 55-
1905-223-10 and TM 55-1905-223-24-18).
STEP 3.
Check for broken or loose wiring and connections.
Check wiring and connections. 'Secure or replace as required.
TEP 4.
Check for broken V-belt on belt drive fans.
Replace as required (paragraph 2-25, 2-28, or 2-31).
STEP 5.
Check for loose pulley on belt drive fan.
Check pulley. Secure setscrew until snug (paragraph 2-25, 2-28, or 2-31).
STEP 6.
Check to see if voltage is wrong.
Refer to Table 1-4 or 1-5 for proper voltage rating (paragraph 2-17).
STEP 7.
Check for defective fan motor.
Replace fan motor (appropriate paragraph 2-25 thru 2-32).
AIR CONDITIONING
8.
High operating head (discharge) pressure above normal.
STEP 1.
Check to see if compressor discharge stop valve partially closed (A/C-2; accommodations).
Turn valve fully counterclockwise.
STEP 2.
Check to see if seawater pump is running and water is flowing through condenser.
a.
Replace the seawater pump if defective (TM 55-1905-223-24-18).
b.
Open hand valves, if closed (TM 55-1905-223-24-18).
c.
Clean sea chest strainer as required (TM 55-1905-223-24-18).
d.
Clear obstruction in supply lines as required (TM 55-1905-223-10).
2-21
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