Honeywell D15P, Руководство по установке, Страница: 6 / 18

Honeywell GmbH 9 MU1H-1007GE23 R0513
GB
9. Maintenance
In accordance with DIN 1988, part 8, the following measures
must be taken:
9.1. Inspection
9.1.1. Pressure reducing valve
1. Close shutoff valve on outlet
2. Check outlet pressure using a pressure meter when there
is zero through-flow
• If the pressure is increasing slowly, the valve may be
dirty or defective. In this instance, carry out servicing
and cleaning
3. Slowly open shutoff valve on outlet
9.2. Maintenance
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
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 that diaphragm, seals, guide and seating bush are
in good condition, and if necessary replace them
8. Reassemble in reverse order
10. Disposal
• Grey cast iron housing
• Cast iron spring bonnet
• Bronze valve seat
• Bronze piston guide
• Cone up to DN150: brass, DN200: steal
• Spring steel adjustment spring
• EPDM diaphragm
• EPDM seal collar
• EPDM sealing washers
• Stainless steel screws and nuts
We recommend a planned maintenance contract with
an installation company
Interval: once a year
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 slak-
kened!
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
Too little or no water pressure Shutoff valves up- or downstream of the
pressure reducing valve are not fully open Open the shutoff valves fully
Pressure reducing valve is not set to the
desired outlet pressure Set outlet pressure
Pressure reducing valve is not fitted in flow
direction Fit pressure reducing valve in flow direction
(note direction of arrow on housing)