Table 3-2. Operator Troubleshooting (ROWPU) - cont.
TEST OR INSPECTION
BACKWASH PUMP DOES NOT START WHEN START BACKWASH SWITCH IS SET TO START - cont.
Open backwash timer cover and press OVERCURRENT PROTECTION PUSH TO RESET switch
(figure 2-65) (On Models WPES-10, WPES-20, and WPES-30). On Models H-9518-1, H-9518-2, and
H-9518-3, reset the circuit breaker inside the timer (figure 2-15).
Check for loose power cable on backwash timer and backwash pump.
If backwash cycle still will not start, notify unit maintenance.
MULTIMEDIA FILTER VENT LINE DOESNT DISCHARGE WATER
Notify unit maintenance.
CHEMICAL FEED PUMP FAILS TO OPERATE.
Check for closed vent on chemical feed can lid (figure 2-41). Open vent.
Check solution level in chemical can.
Refill chemical can as required.
If pump fails to prime after setting chemical feed pump control knob to 10, inspect the chemical feed
suction hose from the chemical can to the chemical feed pump. Movement of chemical solution in hose
should be visible.
Lift and hold chemical can above frame until solution can be seen flowing through chemical feed
If chemical feed pump still will not operate, notify unit maintenance.
Clean chemical feed pump check valves (para. 3-11).
PRODUCT WATER TOTAL DISSOLVED SOLIDS (TDS) LEVEL IS ABOVE 1000 PPM.
Check product water from each R.O. pressure tube as follows:
Operate the ROWPU (para. 2-9).
Adjust product water flow for 6-12 gpm (not to exceed 960 psi for saltwater) up to 16 gpm (not to
exceed 500 psi for fresh/brackish water).