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WATERMAID® Sand Filters
Copyright © Watermaid Pty Ltd
NORMAL FILTER CYCLE
1. Position the handle on the valve to 'FILTER' and start the pump.
2. With a clean filter, record the pressure gauge reading in the space provided on
the specifications sticker or mark the needle position on the pressure gauge.
3. Operate the filter each day for a sufficient time to turn over the water in the
pool once everyday. The filter should also be operated at all times the pool is in
use and for about one hour afterwards. During the winter, the running times may
be reduced.
4. When the pressure gauge reading is 6-7 PSI (40-50kPa) higher than the clean
filter gauge reading as in (2) above, it will be necessary to backwash the filter.
BACKWASHING THE FILTER
When the filter gauge reading is 6-7 PSI (40-50kPa) above the clean filter gauge
reading, cleaning or backwashing is required. To perform the backwash
operation: -
1. Shut off the pump. Be sure to disconnect any automatic pool cleaner.
2. Shift the valve handle to 'BACKWASH'.
3. Start the pump and run until the water runs clear through the sight glass.
(This will take 2 -3 minutes)
4. Shut off the pump and turn the valve handle to 'RINSE'.
5. Start the pump and run for approximately 30 seconds.
6. Shut off the pump and turn the valve handle to 'FILTER'.
7. Start the pump; a new filter cycle has begun.
NOTE: NEVER VACUUM WHILE BACKWASHING.
TROUBLESHOOTING
Reduced flow of water into the pool usually indicates that the filter is ready to be
backwashed. Check the filter pressure gauge. If backwashing is required,
perform the steps as described in this section of the manual titled 'Backwashing
The Filter'. If there is still reduced flow on completion of backwashing, check for
blocked lines.
Large quantities of sand returning to the pool during the filter cycle indicates that
one of the lower laterals are damaged. Correcting this condition requires removal
of sand from the filter so that the damaged lateral(s) may be replaced. In the
event of installation or operation difficulties with your product, contact the
supplier from whom the equipment was purchased.
FILTER START UP
Before starting up the filter, the pool should be overfilled slightly and the filter
run on BACKWASH until the discharge water becomes clear (to prevent dust and
fine particles that may be in the sand bed returning to the pool).
1. Position the valve handle to BACKWASH.
2. Start the pump and run until water in valve sight glass becomes clear.
3. Stop the pump and position the valve to RINSE.
4. Start the pump for 10 to 15 seconds. Stop the pump.
5. Position the valve handle to FILTER and start pump.
6. To determine the correct operating conditions, check the pressure gauge
reading is 12PSI (80kPa) or below.
NOTE: THIS FILTER TANK MUST NOT BE OPERATED UNDER VACUUM. SHOULD
LEAF BASKETS OR SUCTION LINES BECOME CLOGGED, BLOCKED OR CLOSED,
FILTER DAMAGE MAY OCCUR. (Particularly if an auxiliary pump is installed in
line, down stream of the filter).
FILTER OPERATION
The multiport valve controls flow of water through the filter. The handle on top
can be moved to any one of six positions. (With pump turned off) as follows;
NOTE: NEVER CHANGE THE VALVE HANDLE POSITION WHILE THE PUMP
IS RUNNING.
WATERMAID® Sand Filters
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Copyright © Watermaid Pty Ltd
VALVE POSITION
FILTER
BACKWASH
RINSE
WASTE
RECIRCULATE
CLOSED
FUNCTION
Normal filtration and vacuuming through the filter
Clear the filter
Use on filter start up and after backwash to prevent dirt in the sand
returning to the filter
By-passes the filter; used for vacuuming to waste, or draining the pool
By-passes the filter for circulating water to the pool
Shuts all flow to the filter
Summary of Contents for Rapid Kleen 26"
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