TM 10-4610-240-10
TM 08580C-10/1
T.O. 40W4-13-21
Table 3-2. Troubleshooting (ROWPU)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
ANY PUMP LAMP GOES OFF.
Step 1.
Test control panel lamps using TEST INDICATOR LIGHTS switch (figure 2-4) on control panel.
Replace defective bulb using lamp puller (paragraph 3-10).
Step 2.
Check to see if associated pump is operating. For R.O. pump, see if sheave is turning; for other
pumps, rest hand lightly on the motor casing to feel for motor vibrations.
a. If pump is not operating, check and reset respective circuit breaker in junction box and then
immediately try to restart pump. Do so only one time.
b. If pump fails to start, notify organizational maintenance.
c. Shut down ROWPU in normal manner (paragraph 2-14) except when only one raw water pump
fails or distribution pump fails. In these two cases the ROWPU can still be operated.
2.
RAW WATER FLOW INDICATOR DROPS TO NEAR ZERO; BOTH RAW WATER PUMP LAMPS ARE
ON.
Step 1.
Check to see that both raw water pumps are operating. Lsten to motor and rest hand lightly on
i
motor casing to feel for vibration.
a. If pump is not operating, check and reset circuit breaker (figure 2-4) and then immediately
attempt to restart. Do so only one time.
b. If pump fails to start, notify organizational maintenance and remove defective raw water pump
from cycle.
Step 2.
Check for loose hose connections or damaged hose sections.
a. Tighten loose connections.
b. Replace damaged hose sections.
Step 3.
Check to see if input strainer is completely under water.
a. Lengthen strainer rope.
b. Move intake to deeper water.
3-5
