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Sand Filter SFSM | Installation & Operation Manual
®
4.2.2 Chemical Cleaning Procedure
Sand filter chemical cleaners remove oils, deposits
and rust from the sand bed with a 12 hour over-
night soaking when used according to the following
instruction. Follow these instructions carefully. Do
not allow the cleaning solution to be pumped back
into the pool.
1.
Use an approved cleaner for sand filters.
• Approved cleaners should be available
through your pool chemical retail store, or
pool maintenance service or supplier.
2.
If necessary, mix the proper solution per the
manufacturer's label instructions.
3.
Perform the backwash procedure as described
in Filter Cleaning section.
4.
Shut the pump off.
5.
If the filter is installed below the pool water
level, close the appropriate isolation valve(s) to
prevent the pool from draining.
6.
Drain the water from the filter. (See next section.)
7.
After filter has drained, replace cap on drain
fitting.
8.
Place the backwash valve in "Backwash"
position.
• Make certain backwash lines are open.
9.
Introduce cleaner to the water system.
• Follow all appropriate use and safety
instructions from the filter cleaner manufacturer.
10. Follow steps 9-13 from Startup and Operation
section, Startup. to fill the filter tank.
11. Turn off the pump.
12. Leave the filter valve in the "Backwash" position.
• Use caution not to introduce cleaning
solution in the main body of pool water.
13. Disconnect the power at the breaker.
14. Allow the filter to stand for 12 hours.
15. After 12 hour soak, turn on the power breaker
and follow instructions in Filter Cleaning section.
After chemical cleaning, your filter should return very
close to the original "Clean" pressure reading on the
filter pressure gauge that was noted at the time of the
original installation with fresh sand. If not, note this
new "Clean" pressure reading for future reference.
Turn the ring on the filter gauge assembly so that the
arrow next to the word "Clean" is aligned with the
needle.
4.3
Draining the Filter and Removing the
Filter Sand
For maintenance or repair it may be necessary to
drain water from the filter or completely remove all
the sand from the filter. The filter drain will allow for
both water removal and the flushing of sand.
Any additional piping installed at the water drain
must be removable in order to facilitate the further
removal of drain components. Allow sufficient space
for the flushing of sand from the filter. See Figure 11.
CAUTION
Be sure that all provisions for wastewater disposal meet local, state
or national codes. During any backwashing or draining process, 100
gallons or more of pool water will be discharged. Do not discharge
water where it will cause flooding or damage.
Figure 11. Drain Valve
ENGLISH
Flush Out
Sand
Drain
Screen
Unscrew
Union
Coupling
Nut
Hold Fitting
Drain Cap
1/4" BSP
Water
Drain Cap
Page 15
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