IDEAL imax W45 Installation And Servicing Manual page 46

73 PRESSURE GAUGE REPLACEMENT
Refer to Frame 55, then:
1. Remove the jacket front panel. Refer to Frame 57.
2. Unscrew the nut retaining the capillary from the self sealing
fitting.
3. Unscrew the two screws from the pressure gauge bracket
and withdraw the unit from the boiler.
4. Compress the retaining lugs and remove the gauge from
the bracket.
5. Replace the pressure gauge using the fresh gasket
supplied.
6. Reassemble in reverse order.
7. Check the operation of the boiler. Refer to Frame 55.
74 WATER PRESSURE SWITCH REPLACEMENT
Refer to Frame 55, then:
1. Remove the jacket front panel. Refer to Frame 57.
2. Isolate water circuit and drain system
3. Disconnect the electrical connections from the
pressure switch.
4. Unscrew the water pressure switch
5. Fit the new water pressure switch.
6. Re-fill the system ensuring all the air in the heat
exchanger is vented through the air vent.
7. Re-assemble in reverse order.
8. Check the operation of the boiler. Refer to Frame
55.
75 FLOW / RETURN THERMISTOR REMOVAL
Refer to Frame 55, then:
1. Remove the jacket front panel. Refer to Frame 57.
2. Isolate water circuit and drain system
3. Disconnect the electrical connections from the
thermistor.
4. Unscrew the thermistor.
5. Fit the new thermistor with built in 'O' ring seal. Do
not overtighten.
6. Refill the system ensuring all the air in the heat
exchanger is vented through the air vent.
7. Re-assemble in reverse order.
8. Check the operation of the boiler. Refer to Frame 55.
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SERVICING
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Installation & Servicing