GB
4
MU0H-1155GE23 R0319
7
Start-up
7.1 Setting outlet pressure
Set outlet pressure min. 1 bar under inlet pressure.
1.
Close shut-off valve on inlet
2.
Release pressure on outlet side (e.g. through water tap)
3.
Close shut-off valve on outlet
4.
Loosen slotted screw
•
Do not remove slotted screw
5.
Slacken tension in compression spring
•
Turn adjustment handle counter clockwise (-) until
it does not move any more
6.
Slowly open shut-off valve on inlet
7.
Turn control handle until the setting scale shows the
desired value
8.
Re-tighten slotted screw
9.
Slowly open shut-off valve on outlet
7.2 Reverse rinsing
CAUTION!
Interval:
at least every 6 month (acc. to EN806-5)
every 2 months (manufacturer's recommendation)
resp. depending on the degree of dirt in the water.
Red pointer integrated into the view window of one of
the pressure gauges for setting the next reverse
rinsing
Date for next reverse rinsing can be set at the memory
indicator of the outlet pressure gauge.
To ensure convenient and regular adherence to the
reverse rinsing interval, we recommend installing an
automated reverse rinsing system Z11AS.
During reverse rinsing, an inlet pressure of at least
1.5bar is required.
Filtered water can also be tapped during reverse
rinsing.
To avoid extra abrasion, we recommend to perform the
backwash at operating inlet pressures below 12 bar.
7.2.1 Manual reverse rinsing
A collecting container must be positioned beneath
before reverse rinsing if there is not drainage system
available.
1.
Slowly open the ball valve
•
The patented reverse rinsing system starts
2.
Close ball valve again after approx. 3-5 seconds.
Repeat procedure three times
•
If the filter is extremely dirty, the procedure may
have to be repeated additional times
7.2.2 Automatic reverse rinsing with the
Z11AS
The automated reverse rinsing system Z11AS is available as
an accessory. The automated system reliably takes over
reverse rinsing of the filter at intervals which can be set
between 4 minutes and 3 months.
7.2.3 Differential pressure controlled
reverse rinsing with the DDS76 and
Z11AS
Also available as an accessory is the DDS76 differential
pressure switch. It provides fully automatic operation of the
reverse rinsing which is controlled by the differential pressure
across the filter. It actuates a reverse rinsing cycle when the
pressure differential between the inlet and outlet of the filter
reaches a predetermined value. If the pressure difference
exceeds the preset value, then the Z11AS reverse rinsing
actuator is operated via its volt-free input.
8
Maintenance
8.1 Inspection
We recommend taking out a servicing contract with an
installation firm
In accordance with EN 806-5, the following measures
must be taken:
8.1.1 Check valve
Interval: once a year
1.
Close shut-off valve on inlet
2.
Open test valve
•
Until the pressure is released, some water will flow
out of the test valve. After a short period of time the
water flow should stop. If the water continues to
drip or run, then the check valve must be replaced
- see servicing of check valve
3.
Close test valve again
4.
Slowly open shut-off valve on inlet
8.1.2 Filter
CAUTION!
Interval:
at least every 6 month (acc. to EN806-5)
every 2 months (manufacturer's recommendation)
resp. depending on the degree of dirt in the water.
An increased differential pressure between inlet and
outlet pressure gauge indicates a highly contaminated
filter.
