8.4 Cleaning (fig. 4)
• To be carried out by an installation company
i
• To be carried out by the operator
Filter bowl and filter can be cleaned when necessary.
• CAUTION!
To clean parts made of synthetic material do
not use detergents containing solvents!
• Detergents must not be allowed to enter the
environment or the sewerage system!
1. Close shut off valves on inlet and
2. Release pressure on outlet side (e.g. through water
tap).
3. Unscrew filter bowl.
Use double ring spanner ZR06K (☞ Accessories).
4. Remove filter, clean and place back in position.
10. Troubleshooting
Disturbance
Beating sounds
Water is escaping from the spring
hood
Too little or no water pressure
The outlet pressure set does not
remain contant but rises continuously
MU1H-1002GE23 R0804
GB
5. Lightly coat O-ring with silicone grease and place
6. Screw filter bowl in place.
7. Slowly open shut off valves on inlet and inlet..
9. Disposal
The pressure reducing valve consists of:
• Brass
• Steel
• Plastic
outlet..
Cause
Pressure reducing valve is too
large
Diaphragm in valve insert is faulty
Isolating valves up- or downstream of
the pressure reducing valve are not
fully open
Pressure reducing valve is not set to
the desired outlet pressure
Filter in pressure reducing valve is
contaminated
Pressure reducing valve is not fitted
in flow direction
Filter in pressure reducing valve is
contaminated or worn
Valve insert, sealing ring or edge of
nozzle is contaminated or worn -
Unwanted rise above set pressure
Rising pressure on oulet (e.g. in
boiler)
8
onto filter bowl.
• Observe the local requirements regarding
correct waste recycling/disposal!
Remedy
Call our Technical Customer Ser-
vices on +49 (0) 18 01 46 63 00
Replace valve insert
Open the isolating valves fully
Set outlet pressure (☞ chapter 7)
Clean or replace filter (☞ chapter 9)
Fit pressure reducing valve in flow
direction (note direction of arrow on
housing)
Clean or replace filter (☞ chapter 9)
Replace valve insert
Check non-return valve, safety group
etc.
Honeywell GmbH