Table 3-2. Operator Troubleshooting (ROWPU) - cont.
TEST OR INSPECTION
PUMP LAMP ON CONTROL BOX ASSEMBLY DOES NOT LIGHT WHEN SWITCH IS SET TO START
RO. PUMP SHUTS DOWN BY ITSELF; R.O. PUMP LOW PRESSURE LAMP COMES ON.
Check RAW WATER gauge for normal flow.
Check that raw water pump is operating.
Check for clogged suction strainer (para. 3-6) and that strainer is completely under water.
Check raw water suction hose for air leaks.
If low flow still exists, move raw water pump closer to water source.
If raw water flow is normal, go to step 2.
See 3.1, page 3-4.
Check to see if booster pump is operating.
If pump is not operating, reset circuit breaker if necessary and try to restart pump. If pump will not
start notify unit maintenance.
If booster pump is operating, check for clockwise rotation (from fan end).
Check to see if cartridge filter gauge reads over 20 psid.
If over 20 psid, change cartridge filter tubes (para. 3-5).
3-12 Change 2