10.5 PARTS REPLACEMENT INSTRUCTIONS
Note. Before attempting any parts replacement always isolate appliance from mains electricity supply.
1) To remove/replace circulating pump
a) Isolate pump union valves
b) Remove black plastic electrical connections cover
c) Depress each grey lever and remove each wire in turn (for safety during this operation it
advisable to insert each wire into a terminal block)
d) Lift out cable complete with cable retaining clamp and move it to a safe position
e) Using a shallow or other means of collecting water release pump union valves from
circulating pump
f) Lift pump out of appliance and replace with new unit ensuring that new rubber sealing
washers are used
g) Reassemble in reverse order ensuring that the pump head is inclined approximately 30
degrees to the horizontal
h) Vent air from circulating pump via screw in pump head, check system pressure (topping up if
necessary)
i) Reinstate mains electricity supply and test correct operation of replacement pump
2) To remove/replace motorised valve actuator head
a) Remove control panel rear cover, note position of motorised valve wires and remove
b) Release cable grip and ease cable from control panel
c) Remove access cover from front of control cover
d) Remove two fixing screws from corners of valve actuator head and ease valve actuator head
forwards and out of control panel
e) Reassemble in reverse order and test correct functioning
3) To remove/replace motorised valve body
a) Remove access body on front of control panel
b) Remove two screws in valve actuator head and ease forwards off valve body and lay on
control panel
c) Isolate heating circuit using valves on heating flow and return
d) Drain down top section of boiler, storage tank and pipe work
e) Remove heating flow pipe (13 BS50044C) between isolating valve and three port motorised
valve body
f) Remove pump to three port valve pipe(10 BS50042)
Page 54 of 57
Installation & maintenance manual for Camray 5 Combi External Boilers
14/04/2005
file://D:\PL61500\PL61500.htm
