7
Cleaning the Dirt Trap (Fig. 681/682/481/482)
Pull valve insert out of the housing (see section 6):
The strainer can be pulled off and cleaned after removing the bottom O-ring from the
valve insert. After cleaning, slide strainer over the valve insert and insert O-ring back
in the provided groove. Assemble complete valve insert.
8
Cause of Faults, Remedial Action
Fault
Outlet pressure rises
above the set value
External leakage
► Scale (furring)
Pressure reducers are always to be installed in the cold water supply of the system.
If this is not possible you must replace the complete valve insert from time to time.
Assembly and maintenance instructions - 382, 481/681, 482/682 | Version: 06/2023 · V02
Possible cause
Internal leakage due to dirt or
damage to the valve seat
Pressure increase e.g. due to
heating in the downstream
installation
Defective diaphragm
Spring cap not tightened
correctly
Seals defective/dirty
Remediation
Clean or replace the valve insert
No action required on the
pressure reducer
Replace valve insert or use
sealing set
Tighten spring cap / screws
Replace or clean seal
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