Replacement Of Parts; Removing The Outer Casing; Primary Sensor (Ch Ntc) - Bosch Worcester Greenstar Ri ErP + Series Installation And Maintenance Instructions Manual

SERVICE AND SPARES
7.8

REPLACEMENT OF PARTS

CAUTION: TURN OFF THE GAS SUPPLY AND ISOLATE
THE MAINS SUPPLIES BEFORE STARTING ANY WORK
AND OBSERVE ALL RELEVANT SAFETY PRECAUTIONS.
NOTICE: REPLACEMENT OF COMPONENTS.
▶ After replacement of any components always check
for gas tightness where relevant and carry out
functional checks as described in Commissioning.
Damaged O-rings or gaskets must be replaced.
Only use Worcester, Bosch Group original spare parts
with this appliance. Non Worcester, Bosch Group
original spare parts will invalidate the guarantee (if
applicable) and any warranty.
▶ A comprehensive list of appliance spares can be
found in the Spares Booklet.

7.8.1 REMOVING THE OUTER CASING

▶ Remove bottom tray by pressing the tabs (2) in, at the front underside
of the appliance.
▶ Lower the panel.
▶ Pull the panel forward, off the retaining ledge (1) at the back of the
appliance.
1.
2.
Fig. 66 Remove bottom panel
50
1.
2.
6720644744-34.1Wo
1. Undo the two screws securing the top of the appliance casing.
2. Undo the two screws securing the bottom of the appliance casing.
▶ Pull case forward and remove.
2.
Fig. 67 Remove outer case

7.8.2 PRIMARY SENSOR (CH NTC)

To gain access to the following components the outer
case has to be removed:
▶ Primary sensor
▶ Overheat thermostat
▶ Flue limit thermostat
Refer to figure 68 for removal.
1. Remove electrical connection by pulling upwards. Squeeze retaining
clip on plastic moulding of sensor and pull back and up until clear of
pocket in heat exchanger.
2. Pull forward to remove completely.
▶ Coat new sensor with heat conductive paste and replace.
6 720 821 670 (2018/06)