Maintenance - Honeywell BA295STN Installation Instruction

8. Maintenance

We recommend a planned maintenance
contract with an installation company
8.1 Inspection
• Frequency: every 6 month (depending on
local operating conditions)
• To be carried out by an installation company
• Inspection with a test control unit and mainte-
nance-set (see accessories)
8.1.1 Testing discharge valve
1. Remove coupling and flexible tube
2. Fit outlet shutoff valve with sealing and close it
3. Remove blanking plugs
4. Fit ball valve with sealings and close them
5. Open inlet shutoff valve
6. Install suitable test control unit with relief valves
Take note of the instructions of the test control
unit
7. Open ball valve at zone
8. Close inlet shutoff valve
9. Slowly open the vent valve at test control unit
o Pressure in zone
10.Maintain the position of the relief valve and note the
differential pressure when one drop per minute
emits from the discharge valve as opening point of
the discharge valve
The opening pressure can be read off test
control unit
Opening pressure under 0,14 bar
nance!
11.Close ball valve
12.Remove test control unit
13.Open outlet shutoff valve
14.Remove shutoff valve
15.Remove ball valves
16.Screw in blanking plugs
Quick test for the discharge valve:
• Lower the inlet pressure
o if the discharge valve opens (it drops), the
function is o.k.
Honeywell GmbH
and zone
relieves
Mainte-
GB
8.1.2 Testing outlet check valve
1. Remove coupling and flexible tube
2. Fit outlet shutoff valve with sealing and close it
3. Remove blanking plugs
4. Fit ball valve with sealings and close them
5. Open inlet shutoff valve
6. Install suitable test control unit with relief valves
Take note of the instructions of the test control
unit
7. Open ball valve zone
8. Close inlet shutoff valve
9. Open ball valve zone
o Pressure in zone
valve is ready for use
Pressure stays not constant
10.Close ball valve
11.Remove test control unit
12.Open outlet shutoff valve
13.Remove shutoff valve
14.Remove ball valves
15.Screw in blanking plugs
8.2 Maintenance
• Frequency: at least once a year (depending
on local operating conditions)
• To be carried out by an installation company
8.2.1 Cartridge insert
1. Close shutoff valve
o Pressure in backflow preventer relieves
2. Unscrew the plug
3. Exchange cartridge insert, lip seal and filter
o push down the cartridge insert till it snaps in
• Don't disassemble cartridge insert to indivi-
dual parts!
4. Reassemble in reverse order
5. Test function (see chapter inspection)
8.2.2 Check valve
1. Close shutoff valve
o Pressure in backflow preventer relieves
2. Exchange check valve
3. Test function (see chapter inspection)
8
stays constant, outlet check
Maintenance!
MU1H-1231GE23 R1106