Glow-worm Ultracom2 35 Store - Manual (Page 56)

0020112185_PROTO_13 - 01/11 - Glow-worm
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19.4.8 Plate-to-plate heat exchanger
• Drain the boiler heating and domestic hot water circuits as
described in the appropriate chapter "Draining".
• Remove the two securing screws (32).
• Remove the plate-to-plate heat exchanger (29).
• When replacing the plate-to-plate heat exchanger, ensure that
the four rubber sealing washers are fitted into the hydroblock.
NOTE: The plate-to-plate heat exchanger only fits one way.
• Refill, vent and pressurise the boiler.
19.4.9 Domestic hot water pump (head only)
• Drain the boiler heating and domestic hot water circuits as
described in the appropriate chapter "Draining".
• Disconnect the electrical plug (3) from the main board.
• Unscrew the nut (5).
• Carefully remove the pump head (4) together with cable.
Do not strain cable.
• Fit the new pump head by repeating the operations in reverse.
MAINTENANCE