Bosch Worcester Greenstar CDi Compact ErP Series - DHW Temperature Sensor (NTC); Pump Head; Flow Sensor, Flow Restrictor and Filter Removal; Flow Regulator

SERVICE AND SPARES
CDi Compact
ErP
- 6 720 813 276 (2015/07)54
7.8.17 DHW Temperature sensor (NTC)
▶ Disconnect the electrical connector from the sensor.
▶Unclip the sensor from the pipe.
Fig. 103 DHW temperature sensor
7.8.18 Pump head
1. Disconnect the main electrical connector from the bottom of the
pump.
2. Remove the four screws securing the pump head.
3. Pull the pump free from the housing.
▶ Use a screwdriver to gently disconnect the three wire connector from
the bottom of the pump.
▶ Ensure that the pump body is completely dry before fitting the new
pump head, failure to do so may result in damage to the pump.
Fig. 104 Pump head removal
7.8.19 Flow sensor, flow restrictor and filter removal
▶ Isolate the cold mains and ensure that the DHW circuit is fully
drained.
▶ Disconnect the electrical connection to the turbine.
▶ Undo the nut connecting the flow sensor assembly elbow to the Cold
Mains isolating valve.
1. Remove the clip from the housing.
2. Pull the flow sensor assembly out.
3. Remove the flow regulator (1) from the turbine assembly (2).
4. Remove the clip from the flow sensor assembly.
5. Separate the elbow (3) from the turbine assembly (2).
6. Remove the filter (4).
Fig. 105 Flow sensor assembly
7.8.20 Flow regulator
The flow regulator can be further broken down into:
1 - Spacer
2 - Flow regulator
3 - Flow regulator housing
Fig. 106 Flow regulator assembly
Before removal:
▶ Isolate the electrical power to the boiler.
▶ Drain the boiler.
▶ There may be water inside the pump.
Protect any electrical items from water ingress.
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