Troubleshooting - Honeywell NK300S Einbauanleitung

4. Unscrew spring bonnet
• Use spanner
5. Remove slip ring
6. Remove valve insert with a pair of pliers
7. Check that sealing ring, edge of nozzle and slotted ring
are in good condition, and if necessary replace the entire
valve insert
8. Reassemble in reverse order
9. Set outlet pressure
9.2.2. Maintenance and cleaning of cartridge insert
Caution !
Do not use any cleansers that contain solvents and/or
alcohol for cleaning the plastic parts, because this can
cause damage to the plastic components - water
damage could result.
Cleaning agents can lead to water damage!
Detergents must not be allowed to enter the
environment or the sewerage system!
1. Close shut off valve on inlet and outlet
2. Remove blanking plugs
3. Backflow preventer is released
4. Remove cover from cartridge insert
5. Remove cartridge insert and strainer
6. Remove strainer from cartridge insert
7. Clean or replace strainer and cartridge insert
Do not dismantle cartridge insert in individual parts!
8. Reassemble in reverse order
• push down the cartridge insert till it snaps in
9. Check operation

11. Troubleshooting

Problem
No or too small water flow rate
Discharge valve opens without reason (no
fluctuation of inlet pressure)
Discharge valve does not close
Water is escaping from spring hood
The outlet pressure set does not remain
constant
MU1H-1556GE23 R1114
GB
9.2.3. Check valve
1. Close shut off valve on inlet and outlet
2. Remove blanking plugs
3. Backflow preventer is released
4. Remove valve insert of pressure reducing valve acc. to
chapter 9.2.1
5. Replace check valve
6. Mount valve insert of pressure reducing valve acc. to
chapter 9.2.1
7. Check operation
10. Disposal
• Dezincification resistant brass housing
• Discharge connection, valve cartridge, valve insert and
spring bonnet in high-grade synthetic material
• Fibre-reinforced EPDM diaphragm
• Seals in NBR and EPDM
• Spring steel adjustment spring
• Stainless steel fine filter mesh
Cause
Refilling combination is not fitted in flow
direction
Ball valves up- or downstream of refilling
combination are not fully open
Pressure reducing valve is not set to the
desired outlet pressure
integrated strainer is contaminated
Non return valve upstream or discharge
valve are contaminated
Discharge valve is contaminated or faulty Remove cartridge insert and clean or
Valve insert diaphragm damaged
Valve insert, sealing ring or edge of nozzle
is contaminated or worn
8
Check valve will be destroyed after demounting
Observe the local requirements regarding correct waste
recycling/disposal!
Remedy
Fit refilling combination in flow direction
(note direction of arrow on housing)
Open shut off valves fully
Set outlet pressure
clean strainer
Remove cartridge insert and clean or
exchange it
exchange it
Exchange valve insert
Exchange valve insert
Honeywell GmbH