49
Installation and Servicing
SECTION 3 - SERVICING
3.25 CH WATER PRESSURE SWITCH REPLACEMENT
1. Refer to Section 3.9.
2. Drain the boiler. Refer to Section 3.20.
3. Pull off the two electrical connections.
4. Using a suitable tool, pull out the metal
retaining clip.
5. Carefully withdraw the pressure switch.
6. Fit the new pressure switch and re-
assemble in reverse order.
7. Refill the boiler.
8. Check operation of the boiler. Refer to
Sections 2.25 & 2.26.
1.
Refer to Section 3.9.
2.
Drain down the boiler. Refer to Section 3.20.
3.
Unplug the electrical lead.
4.
Unscrew the thermistor (to facilitate removal a
13mm socket spanner should be used).
5.
Fit the new thermistor using the sealing
washer provided.
6.
Reassemble in the reverse order.
7.
Refill the boiler. Refer to Section 2.19.
8.
Check the operation of the boiler. Refer to
Sections 2.25 & 2.26.
3.26 CONTROL / NO FLOW THERMISTOR REPLACEMENT
4
3
3
4
5
SER
VICING
Summary of Contents for LOGIC+ SYSTEM S18
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