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21
Part No. 5000893
6.9 Pressure Relief Valve
a. Gain general access - See 6.2.
b. Drain the appliance - See 6.8.
c. Unscrew the valve and discard.
d. Screw in new valve.
6.8 To Drain the Appliance
a. Ensure that the gas service cock is
turned OFF.
b. Ensure that the water service cock is
turned OFF.
c. Open a hot water outlet.
d. Have a suitable container to hand .
Remove the drain screw from the water
service cock and allow the water to drain.
e. Close the hot water outlet.
6.10 Water Governor
a. Gain general access - See 6.2.
b. Drain the appliance - See 6.8.
c. Release the inlet water connection and
lower the pipework to clear the inlet.
d. Release the union nut and clamping plate
then remove the feed pipe. Replace the
'O' ring.
e. Remove the screw and plate securing the
sensing tube to the water governor.
Replace the 'O' ring.
Replacement Of Parts
Fig. 33
Fig. 34
Fig. 35
