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4.3.3. Control Valve Replacement
1. Disconnect the pilot feed pipe, the main
gas feed pipe and the thermocouple
connection from the back of the valve.
1. Pull out the HT lead connection from
under the electrode and cut the cable tie
wrap.
2. Remove the valve securing screw/s and
withdraw the valve.
3. Refit the new valve in reverse order
ensuring that the valve spacers (on
Mertik valve) are in place.
4. Roll up the excess length of HT lead and
secure it to the rolled up thermocouple
cable with a new tie wrap.
4.3.4. Motor Replacement (Remote Control / Optimum Control Models)
The gas rate adjusting motor is replaceable
in situ.
1. Remove the batteries from the receiver
unit to prevent the risk of short circuit.
2. Remove the two motor connection tags
from the valve.
3. Remove the valve cover securing screw.
4. Unclip the valve cover from the valve on
the left hand side by inserting a very
small screwdriver in the slot on the right
hand front of the cover and pull out the
cover.
5. Turn the gas rate adjusting knob fully
anticlockwise and gently manipulate the
motor free from the valve (see note).
6. Replace with new motor ensuring that
the motor is hooked into the left hand
lug.
7. Replace the cover and secure with the
screw.
8. Remake the motor connections ensuring
that the large tag is fitted to the large
spade (top connection) and vice versa.
9. Replace the batteries ensuring the
correct polarity.
10.
Operate the handset to check the
operation of the motor.
Note
: Operating the gas rate adjusting knob manually will cause the motor clutch
to operate. This is normal and will not affect the valves’ operation.
