Jandy DEL Series Installations- und Betriebshandbuch - Seite 12
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Page 12
6.2 Backwashing
1.
With filter pump off, set the backwash valve or
MPV handle to the "BACKWASH" position.
2.
Open air release valve.
!
Caution
Be sure all provisions for waste water disposal
meet applicable local, state or national code.
100 gals. or more of pool water will be dis-
charged during filter backwashing. Do not
discharge where water will cause flooding or
damage
3.
Stand clear of the filter, start the pump to
circulate the water backwards through the filter
to the waste line.
4.
When a steady stream of water is expelled
through the air release valve, close the
valve.
5.
Run the pump until the backwash discharge
water is clear (repeat steps 1 thru 5 if required).
6.
Switch the filter pump off.
7.
Follow the procedure for coating the filter
grids as described in Section 4.2.
6.3 Pressure Gauge
1.
During operation of the filtration system, check the
base of the pressure gauge for air or water leaks at
least once a week.
!
Caution
The pressure gauge is the primary indicator of
how the filter is operating. Maintain your
pressure gauge in good working order.
2.
Keep the pressure gauge in good working order.
If you suspect a problem with the gauge, Jandy
Products recommends you call a qualified service
technician to do any work on the filter/pump system.
6.4 Cleaning Filter Grids with Water
1.
Turn off the pump and switch of the circuit breaker to
the pump motor. Open the air release valve on top of
the filter tank. Close the filter isolation valves. Remove
the drain plug
2.
Once all pressure has been relieved. Remove the
clamp ring and the filter lid. Inspect the o-ring for
cracks or tears replace if necessary.
3.
Remove the filter grid assembly from the filter. Follow
instructions in Section 5.1.
4.
Using a garden hose, thoroughly flush all
contaminates from the filter grid surfaces.
5.
See Section 5.2 for reassembly of the filter tank and
filter grids.
6.5 Cleaning Filter Grids with Muriatic
Acid
1.
Check with your local pool store or service company
to see if they offer filter grid de-scaling services.
2.
Stiffening of the filter grid fabric is caused by mineral
deposit buildup. It is usually due to deposits of either
magnesium, calcium, alkalines or carbonates. Removal
of these deposits may be accomplished by soaking the
filter grids in a plastic tub or pail with six (6) parts
water to one (1) part hydrochloric acid (muriatic acid).
!
Warning
Working with muriatic acid can be dangerous.
When cleaning filter grids always wear
rubber gloves and eye protection. Add acid to
water, do not add water to acid. Splashing or
spilling acid can cause severe personal injury
and/or property damage.
3.
Wear rubber gloves and eye protection when mixing
the solution, and handling or rinsing the filter grids.
4.
Soak for at least four (4) hours.
5.
Rinse the filter grids thoroughly with water.
6.
See Sections 5.1 and 5.2 for reassembly of the filter
tank and filter grids.
SECTION 7.
Winterizing
7.1 Winterizing
1.
Turn off the pump and the circuit breakers.
2.
Open air release valve and move the MPV handle to a
position between two ports. This will allow air to flow
to all ports.
3.
Remove the drain plug at the base of the filter to
ensure that the tank is empty. Store the drain plug and
seal in a safe place. Do not reinstall until next season
at start-up.