Table 3-2. Troubleshooting (ROWPU) (continued)
TEST OR INSPECTION
If the timer still fails to operate but there is electrical power to the timer box, you
can manually backwash the filter.
Manually backwash filter as follows:
a. With a small screwdriver or similar tool, press against the raised button on the white
cam to rotate the cam counterclockwise to the BW (backwash) position (fig. 272).
The backwash pump should start. Allow to backwash for 5 minutes.
b. Rotate white cam to rinse position.
Allow filter to rinse for 5 minutes.
c. Rotate white cam to the SR (service) position. Backwash is now complete.
d. Report defective timer to unit maintenance for replacement.
14. BACKWASH PUMP DOES NOT START WHEN START BACKWASH SWITCH IS SET TO
START (SOLID- STATE TIMER - MODEL 600-3)
Check that INTERNAL INDICATOR knob is in SERVICE position (view 1, fig. 274).
Press RESET button to ensure knob is in SERVICE position.
If backwash pump still does not start, filter can be manually backwashes.
Manually backwash multimedia filter as follows:
a. Turn INTERNAL INDICATOR knob counterclockwise to BACKWASH position.
Backwash should start.
Allow filter to backwash for 10 minutes.