Honeywell GmbH
9
MU1H-1155GE23 R0912
GB
9.2.5.3.Replace ball valve
1. Close shutoff valve on inlet
2. Release pressure on outlet side (e.g. through water tap)
3. Close shutoff valve on outlet
4. Unscrew discharge connection
5. Remove ball valve
6. Screw in new ball valve
7. Screw in discharge connection
8. Slowly open shutoff valve on inlet
9. Slowly open shutoff valve on outlet
9.2.6. Pressure reducing valve
1. Close shutoff valve on inlet
2. Release pressure on outlet side (e.g. through water tap)
3. Close shutoff valve on outlet
4. Loosen hexagon nut on spring bonnet
5. Slacken tension in compression spring
•
Turn control adjustment screw to the left (-) until it does not move any
more
6. Unscrew spring bonnet
7. Check the cartridge insert for fault-free condition and replace insert or
sealing parts if necessary.
8. Reassemble in reverse order
9.3. Cleaning
9.3.1. Sieve
1. Close shutoff valve on inlet
2. Release pressure on outlet side (e.g. through water tap)
3. Close shutoff valve on outlet
4. Unscrew filter bowl
5. Remove filter cartridge
6. Clean sieve
7. Re-insert the filter insert
8. Screw filter bowl in place
9. Slowly open shutoff valve on inlet
10. Slowly open shutoff valve on outlet
10. Disposal
•
Check valve
- Grey cast iron housing end and housing
- Stainless steel screws and nuts
- Stainless steel disc
- Stainless steel spring
- EPDM for lip seal ring
•
Fine filter
- Red bronze housing and filter bowl
- Stainless steel, red bronze and brass inner parts
- Stainless steel fine filter
•
Pressure reducing valve
- Housing made of ductile cast iron (EN-GJS-400-15 EN1563), coated
with PA (Rilsan)
- Spring bonnet made of ductile cast iron (EN-GJS-400-15 EN1563),
coated with PA (Rilsan)
- Cartridge insert made completely of low-lead (<2.2% acc. to DIN 50930
part 6) brass with stainless steel valve spindle
- Spring steel adjustment spring
- Diaphragm and seals made of EPDM
- Groove ring and sealing disc made of high-quality PU
- Stainless steel thread rod and nuts
Frequency: every 1-3 years (depending on local operating conditions)
To be carried out by an installation company
Caution !
There is a spring in the spring bonnet. It may cause injuries if the spring
is derailing.
•
Make sure tension in compression spring is slakkened!
Observe the local requirements regarding correct waste recycling/
disposal!
11. Troubleshooting
Problem
Cause
Remedy
Beating sounds
Pressure reducing valve is too
large
Call our Technical Customer Services
Water is escaping from the spring bonnet
Diaphragm is faulty
Replace diaphragm
Spring bonnet not screwed flush
Retighten the screws
O-ring forgotten in the diaphragm piston during
assembly
Insert O-ring
Too little or no water pressure
Shut-off valves upstream or downstream from water
station not fully open
Open the shutoff valves fully
Pressure reducing valve is not set to the desired
outlet pressure
Set outlet pressure
Water station not mounted in the direction of flow
Fit water station in flow direction (note direction of
arrow on housings)
