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6.7
Replacing the filter cartridge
I
CAUTION!
Close the existing check valve before replacing the filter cartridge!
INFORMATION!
f The filter cartridge must be replaced no later than 6 months after commissioning,
irrespective on the degree of exhaustion.
f The filter cartridge must also be replaced after a shutdown period of 4 weeks or more.
Procedure:
1. Close the check valve.
2. Unscrew the filter cartridge out of the filter head in a clockwise
motion (see Fig. 12).
Dismantling can be simplified by turning the filter head in the filter
bracket by 90°.
3. Install new filter cartridge (see Fig. 12).
4. Flush and bleed filter cartridge as described in Section 6.6.
5. Dispose of the removed filter cartridge; observe the local disposal
regulations.
1
2
2
1
Fig. 12
7 Service and maintenance
Every technical appliance requires regular service and maintenance work to maintain correct
functioning.
I
CAUTION!
Drinking water is a foodstuff
Hygienic care when handling the filter system should
therefore be a matter of course. Clean the outside of
the filter system regularly with a damp cloth and work
cleanly when replacing the filter cartridge. Avoid using
corrosive chemicals and cleaning agents.
Check for leaks
Daily
Check the pressure hoses
Regular check for breaks and pinch points. Broken
hoses must be replaced.
Break in operation
After a break in operation exceeding two days, the filter
cartridge must be flushed with a minimum of 4–5 litres of
water.
Replace filter cartridge
After 6 months at the latest (regardless of the residual
capacity); after a shutdown period of 4 weeks or more
Replace filter head
After 5 to 10 years
Replace pressure hoses
After 5 years
f Failure to respect the filter replacement intervals may cause damage to the downstream
appliances.
f Failure to replace the filter head or the hoses can cause property damage.
8 Troubleshooting
Fault
Cause
Filtered water cannot
Water intake or other check
be drawn
valves closed
Filter not fully screwed into
the filter head
Filter head fitted incorrectly
Low water flow
System pressure is too low
Aquastop in filter head
Foreign particles deposited
leaking when filter
in Aquastop
cartridge is removed
Threaded connection
Faulty seal
leaking
Air bubbles
Not completely bled
Troubleshooting
Test check valves and open
if necessary
Unscrew filter by ½ rotation and reinsert as far as
it will go (see Section 6.6)
Check flow direction (direction of
arrow on filter head) and reverse
if necessary (see Section 6.4.2)
Check system pressure (see Section 6.2)
Flush system with built-in filter
(see Section 6.6)
Check seal, replace if necessary
Repeat the bleeding procedure (see Section 6.6)
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