Service And Maintenance; Troubleshooting - BWT bestmax Premium S Instructions De Montage Et De Service

7 Service and maintenance

Every technical appliance requires regular service and maintenance work to maintain correct
functioning.
I
CAUTION!
Drinking water is a foodstuff
Check for leaks
Check the pressure hoses
Break in operation
Replace filter cartridge
Replace filter head
Replace pressure hoses
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
Filtered water cannot
be drawn
Low water flow
Aquastop in filter head
leaking when filter
cartridge is removed
Threaded connection
leaking
Air bubbles
Water is milky/white
in colour
Heating element,
boiler in the appliance
furs up too quickly
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.
Daily
Regular check for breaks and pinch points. Broken
hoses must be replaced.
After a break in operation exceeding two days, the filter
cartridge must be flushed with a minimum of 4–5 litres of
water.
After 12 months at the latest (regardless of the residual
capacity); after a shutdown period of 4 weeks or more
After 5 to 10 years
After 5 years
Cause
Water intake or other check
valves closed
Filter not fully screwed into
the filter head
Filter head fitted incorrectly
System pressure is too low
Foreign particles deposited
in Aquastop
Faulty seal
Not completely bled
Process-related formation
of carbonic acid that escape-
sas small white bubbles
Incorrect bypass setting,
filter capacity exceeded,
filter too small
Troubleshooting
Test check valves and open
if necessary
Unscrew filter by ½ rotation and reinsert as far as
it will go (see Section 6.9)
Check flow direction (direction of
arrow on filter head) and reverse
if necessary (see Section 6.5.2)
Check system pressure (see Section 6.2)
Flush system with built-in filter
(see Section 6.8)
Check seal, replace if necessary
Repeat the bleeding procedure (see Section 6.8)
Cloudiness disappears after
approx. 5 min.
Check total hardness, bypass
setting and filter capacity, fit new
filter cartridge if necessary
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