SERVICING AND SPARES
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27. CH PRESSURE RELIEF VALVE
▶ Remove the Hydraulic block from the boiler ( 26. Hydraulic Block).
1. Remove the spring clip from the Pressure relief valve housing.
2. Withdraw the pressure release valve (A) from its housing.
▶ To refit, follow the above in reverse.
▶ Ensure any seals that have been disturbed are renewed.
Fig. 98 Pressure relief valve removal
28. PLASTIC PROTECTION DEVICE
▶ Ensure the system is fully drained.
▶ Disconnect all pipes connected to the pump housing.
▶ Remove the electrical connection to the pump.
▶ Withdraw the metal clip to the right of the pump head to release the
pump housing.
▶ Slide the device to the left and then withdraw it from the appliance.
1. Remove the spring clip from the pressure relief valve housing.
2. Withdraw the pressure relief valve (A). To refit, follow the above in
reverse.
▶ Ensure any seals that have been disturbed are renewed.
Fig. 99 Plastic protection device removal
2.
1.
A
6 720 812 176-17.1O
28.2
A
28.1
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