Baxi Eco 3 Wartungshandbuch PDF herunterladen (Seite 33)

12.0 Changing Components

12.17 Pressure Relief Valve (Fig. 78)

1. Drain the primary circuit.

2. Disconnect the discharge pipe from the valve.

Using a suitable hexagon key slacken the grub

screw sufficiently to release the valve.

3. Note the orientation of the valve, rotate it and

withdraw it from the manifold.

4. Fit the new valve and ‘O’ ring seal and set to

the previously noted orientation. Reassemble in

reverse order.

12.18 P.C.B.

1. Note the settings of the temperature control

knobs. Rotate the knobs fully anticlockwise and

carefully pull them off the drive pins (Fig. 80).

2. Remove the screws securing the control box

cover and release the cover retaining barbs from

their slots. Disengage the rear of the cover from

the control box hinge pin (Fig. 79).

3. Note the position of all plugs and wires on the

P.C.B. and disconnect them. Pull the drive pins off

the P.C.B.

4. Undo the securing screws and remove the

P.C.B.

5. Reassemble in reverse order, ensuring that the

temperature controllers are reset to their previous

positions (Fig. 80).

12.19 Selector Switch

1. Note the setting of the selector switch knob and

carefully pull it off the facia (Fig. 80).

2. Remove the screws securing the control box

cover and release the cover retaining barbs from

their slots. Disengage the rear of the cover from

the control box hinge pin (Fig. 79).

3. Note the position of the electrical connections

and the orientation of the switch. Remove the

electrical connections.

4. Remove the screws securing the switch to the

facia panel (Fig. 80).

5. Fit the new switch, ensuring that it is correctly

positioned and reassemble in reverse order.

Pressure Relief Valve

Grub Screw

‘O’ ring seal

Discharge Pipe

Control Box Cover

P.C.B.

Selector

Switch

Facia

Selector Switch Knob

Temperature Control Knobs

Fig. 78

Fig. 79

Fig. 80

Drive Pins

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 43 44

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