Auto Air Vent; Pump Head; Drain Tap - Worcester 41-311-67 Installation, Commissioning And Servicing Instructions

SERVICE AND SPARES

6.8.18 AUTO AIR VENT

Removal of the syphon assembly will give
access to Auto air vent. Refer to page 59.
B Ensure the appliance has been fully drained.
B Use a screwdriver or similar to rotate the air vent
anticlockwise, as shown below.
Fig. 111 Auto air vent
1. Lift the air vent (1) out of the housing and remove.
Fig. 112 Auto air vent removal
NOTICE:
B The "O" ring must be fitted to the Auto air
vent and NOT the hydraulic block
otherwise the Auto air vent will be
difficult to fit.
B Apply silicone lubricant to the "O" ring to
ease assembly.
B To refit, follow the above in reverse.
60
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6.8.19 PUMP HEAD

B Ensure the boiler is fully drained).
B Disconnect the electrical connection from the bottom
of the pump.
NOTICE: Water damage
B Protect the Control unit from water
ingress when removing the Pump head.
1. Remove the four Allen bolts securing the pump at
each corner.
2. Gently pull the pump towards you and remove.
Fig. 113 Pump head removal
B To refit, follow the above in reverse.

6.8.20 DRAIN TAP

B Ensure the appliance has been fully drained.
1. Rotate the drain tap fully anticlockwise.
2. Withdraw the drain tap from its housing
6.
5.
2.
Fig. 114
B To refit, follow the above in reverse. Ensure any seals
that have been disturbed are renewed.
6 720 644 743a (2010/10)
1.
1.
2.
1.
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