9.3.7
Hall effect sensor
1. Ease the sensor upwards off the hydraulic inlet manifold assembly.
2. Disconnect the electrical plug from the sensor.
3. Connect the plug to the new sensor. Carefully fit the new sensor to
the hydraulic assembly, ensuring it is fully down.
9.3.8
DHW flow regulator and filter
1. Close the cold mains inlet and draw off any residual DHW.
2. Pull off the hall effect sensor.
3. Unscrew the filter assembly from the inlet / return manifold.
9.3.9
Safety pressure relief valve
1
Safety pressure relief valve
2
"O" ring seal
3
Sealing grommet
4
Discharge pipe
5
Grub screw
1. Drain the primary circuit.
2. Disconnect the discharge pipe from the valve and remove the seal
ing grommet.
3. Using a suitable hexagon key undo the grub screw sufficiently to re
lease the valve.
4. Note the orientation of the valve, rotate it and withdraw it from the
manifold.
5. Fit the new valve and ‘O’ ring seal and set to the previously noted
orientation. Tighten the grub screw.
6. Reconnect the discharge pipe ensuring the sealing grommet is in
place to maintain the integrity of the case seal.
Fig.55
Remove hall effect sensor
PN-0000314
Fig.56
Remove flow regulator and filter
PN-0000313
Fig.57
Remove safety pressure relief valve
PN-0000312
1
3
2
5
4
9 Maintenance
7678846 - A - 22052017
57
