Assembly and Operating Instructions Sand Filter System without Pre-filter
English
17
3. REGULAR BACKWASHING
Clean the filter (backwashing) once a week.
To be able to determine when to carry out a filter
cleaning (BACKWAHING), we recommend to use a
pressure gauge. Systems with pressure gauge allow
reading the pressure off the gauge. If the pressure
increases by 0.3 bar (max. 0.6 bar), a backwashing
must be carried out. A weekly backwashing of
the filter is recommended, even if this value is not
reached. This ensures that the filter sand remains
loose and does not stick together. Pressure gauges
for our filter system are available separately (article
no.: 2600020). Please contact your dealer, if
required.
Attention: Refill the missing water
level in the pool with fresh water after
backwashing!
3.1 BACKWASHING
Set the 6-way valve to BACKWASH.
Switch the filter system on. When the pumped water
is clean, the backwashing process is completed,
which
should take 3 minutes at the most
.
Set the 6-way valve to FILTER or RINSE (switch the
power supply off first).
3.2 RINSE
The 6-way valve optionally also allows draining
parts of the residual dirt after backwashing into the
sewer system instead of the swimming pool.
To do this, set the 6-way valve to RINSE. Switch the
filter system on for a maximum of 30 seconds, then
reset the 6-way valve to FILTER.
4. MAINTENANCE WORKS
4.1 MAINTENANCE OF FILTER TANK
The gate valves must be closed during mainte-
nance works and be reopened after completion of
these works.
The fill level and condition of the quartz sand must
be checked once a year. The sand must flow loosely
through the hand! If lumps are formed, the quartz
sand must be replaced completely. See Section 2.2
‘Filling’.
4.2 MAINTENANCE OF CIRCULATION PUMP
Switch the pump off, set the 6-way valve to
CLOSED. Observe point 1.1.2! In the winter, empty
the pump completely and store it in a frost-free
place; turn the motor shaft occasionally to prevent
the shaft from becoming encrusted by limescale
deposits.
4.2.1 MOUNTINGS
The two engine mounts are self-lubricating
and do not require maintenance.
4.2.2 SHAFT SEAL
The shaft is equipped with a mechanical seal
which may leak after prolonged operation. We
recommend purchasing a new pump when
this happens.
4.2.3 MOTOR
No special maintenance required.
4.2.5 MAINTENANCE OF 6-WAY VALVE
This valve is maintenance-free. It is impor
-
tant, however, that the pump is always first
switched off before changing the position.
