MU1H-1252GE23R1015
7
Honeywell GmbH
GB
7.2. Assembly instructions
1. Thoroughly flush pipework
2. Install backflow preventer
• Install in horizontal pipework with discharge connection
directed downwards
• Note flow direction (indicated by arrow)
• Install without tension or bending stresses
• Provide a straight section of pipework of at least five times
the nominal valve size after the backflow preventer
3. Attach drain pipe to discharge connection (plastic pipe
HT 50, HT 70)
4. The appliance is ready for use
8. Maintenance
8.1. Inspection - acc. EN806-5
8.1.1. Testing discharge valve
1. Procedure according to local requirements
8.1.2. Testing outlet check valve
1. Procedure according to local requirements
8.2. Maintenance
In accordance with EN 806-5 a regular maintenance must be
taken.
8.2.1. Cartridge insert
1. Close shutoff valve on inlet
2. Release pressure on outlet side (e.g. through water tap)
3. Close shutoff valve on outlet
4. Remove cover
5. Replace cartridge insert and lip seal
6. Reassemble in reverse order
• push down the cartridge insert till it snaps in
7. Test function (see chapter inspection)
8.2.2. Check 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. Remove cover
5. Exchange check valve
6. Reassemble in reverse order
7. Test function (see chapter inspection)
8.3. Cleaning
If necessary, the cartridge insert can be cleaned.
1. Close shutoff valve on inlet
2. Release pressure on outlet side (e.g. through water tap)
3. Close shutoff valve on outlet
4. Remove cover
5. Clean or replace cartridge insert and lip seal
6. Reassemble in reverse order
• push down the cartridge insert till it snaps in
7. Test function (see chapter inspection)
We recommend a planned maintenance contract with
an installation company
Maintenance of backflow preventer must be carried out
by authorized personnel!
• Frequency: every 6 month (depending on local oper-
ating conditions)
• To be carried out by an installation company
• Inspection with a test control unit and maintenance-
set (see accessories)
Test with test kit
Quick test for the discharge valve:
• Lower the inlet pressure
- if the discharge valve opens (it drops), the func-
tion is o.k.
Test with test kit
We recommend a planned maintenance contract with
an installation company
Frequency: every 1-3 years (depending on local oper-
ating conditions)
To be carried out by an installation company
• Don’t disassemble cartridge insert to individual
parts!
• To be carried out by an installation company
• To be carried out by the operator
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.
Detergents must not be allowed to enter the environ-
ment or the sewerage system!
• Don’t disassemble cartridge insert to individual
parts!