32
Alpha CD50 - Component Replacement
8.32 CHECK VALVE - Refer to Fig. 15
1. Close the mains water supply valve and ensure that all hot water taps are closed. Release the pressure from the hot water circuit.
2. Disconnect the automatic flow regulator (L in Fig. 15) unions and remove.
3. Unscrew the check valve housing (K in Fig. 15) and push the check valve out of its housing.
4. Re-assemble in reverse order. Refill and pressurise the hot water circuit by opening the mains water supply valve.
8.33 EXPANSION RELIEF VALVE - Refer to Fig. 12
1. Close the mains water supply valve and ensure that all hot water taps are closed. Release the pressure from the hot water circuit.
2. Disconnect the relief valve union and discharge pipe and remove the valve.
3. Fit a new valve using new sealing washers and re-assemble in reverse order.
4. Refill and pressurise the hot water circuit by opening the mains water supply valve.
8.34 AUTOMATIC FLOW REGULATOR VALVE - Refer to Fig. 15
1. Close the mains water supply valve and ensure that all hot water taps are closed. Release the pressure from the hot water
circuit.
2. Disconnect the two flow regulator unions and remove the valve from the boiler.
3. Re-assemble in reverse order using new washers.
8.35 CYCLONE - Refer to Fig. 15
1. Gain access behind the casing and drain the boiler heating circuit as described in Sections 8.1 and 8.2.
2. Disconnect the unions from the cyclone and re-assemble with a new cyclone.
3. Pressurise the system. (Refer to Commissioning, Section 5.1).
8.36 CONDENSATE TRAP - Refer to Fig. 15
1. Gain access behind the casing and drain the trap as described in Sections 8.1 and 7.3, paragraph 10.
2. Disconnect the top and drain connection of the condensate trap.
3. Lift the trap out and re-assemble with a new condensate trap.
Note: Before fitting the new trap, pour 100 cc of water into the trap.
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