9
CLEANING THE FILTER
When to Clean:
NOTICE:
If installation does not allow backwashing, use module cleaning proce-
dure regularly (see Page 10).
1. With a new filter:
A. Record filter operating pressure at startup. When pressure reaches 10
PSI (69kPa) above startup operation pressure, stop pump for 30-60
seconds to allow filtering cake to release.
B. Restart pump to form new cake. Pressure should now be less than 10
PSI (69kPa) above startup operating pressure.
C. If pressure is still more than 10 PSI (69kPa) above startup operating
pressure, backwash filter (see below).
2. Thoroughly clean air bleed assembly (Key No. 9B, Page 14) on top of filter
module EVERY time filter is opened. Be sure to remove all debris from
screen. Replace screen if damaged.
3. At least twice a year, manually clean filter module according to instruc-
tions, Page 10. At least once a year, follow instructions under “Special
Cleaning Instructions”, Page 11, as well.
Filter Backwash Procedure:
To prevent equipment damage and possible injury turn pump OFF
before changing valve position.
NOTICE:
Before backwashing with a separation tank, review separation tank own-
er's manual for instructions.
1. Stop pump.
2. Change valve position.
A. If using Multi-port Valve, set it to backwash position.
B. If backwashing with a Two Position Slide Valve, push handle to full down
position.
3. Start pump and run it for 3 minutes.
4. Stop pump and open tank bottom side drain.
NOTICE:
A 1-1/2” drain valve is recommended.
5. Start pump and run 1 minute, backwashing through filter valve and tank
drain.
6. STOP PUMP, return filter valve to filter position and close tank drain.
NOTICE:
Do not vacuum pool while backwashing filter.
7. Compare pressure reading on gauge with reading recorded after initial
startup. The two readings should be very close; if not, do "Module
Cleaning Procedure", Page 10.
1
2
3
4
5
6
7
FIGURE 4 - 21" Filter clamp tighten-
ing sequence.
