Table 3-2. Troubleshooting (ROWPU) (continued)
TEST OR INSPECTION
Check for loose hose connections or leaking hose.
a. Tighten loose connections.
b. Replace leaking hose.
Check distribution nozzle for broken parts or inoperative handle.
Replace defective distribution nozzle.
10. PUMP LAMP ON CONTROL BOX ASSEMBLY DOES NOT LIGHT WHEN SWITCH IS SET TO
Step 1 applies only to normal start of the raw water pump. If other pump lamps
do not light when started in proper order, go to step 2.
Ensure the EMERGENCY STOP button is pulled out.
Pull EMERGENCY STOP button out.
Check to see if ROWPU is receiving power from power source. R.O. pump LOW
PRESSURE LAMP should be on and panel light should work if ROWPU is receiving power.
a. Make sure power source is securely plugged into junction box.
b. Troubleshoot power source using applicable manual.
Check to see if associated pump is operating. For R.O. pump, see if sheave is turning; for
other pumps, rest a hand lightly on the motor casing to feel for motor vibrations, check for
correct pump rotation.
a. If motor is running, replace panel light bulb (para. 3-10).
If new bulb does not light, notify unit maintenance to troubleshoot lamp socket
b. If motor is not running, go to step 4.