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MU1H-1234GE23 R0812
8
Honeywell GmbH
GB
10. Disposal
• Stainless steel housing
• High-quality synthetic material valve cartridge
• High-quality synthetic material or stainless steel
check valves
• Stainless steel ball valves
• Seals in NBR and EPDM
• High quality synthetic material discharge connection
11. Troubleshooting
Störung
Ursache
Behebung
Discharge valve opens without
apparent reason
Pressure strokes in water supply
system
Install a pressure reducing valve upstream
the backflow preventer
Fluctuating inlet pressure
Install a pressure reducing valve upstream
the backflow preventer
Cartridge insert is contaminated
Remove cartridge insert and exchange it
Discharge valve don’t close
Deposits on valve seat
Remove cartridge insert and clean or
exchange it
Damaged ’o’ring
Remove cartridge insert and exchange it
Leaky discharge valve
Remove cartridge insert and clean or
exchange it
Flow is too low
Inlet strainer is blocked
Remove strainer and clean it