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22.4.6 Removing the pump
1. Carry out step 22.1.1;
2. Lower the electrical box cover as in step 22.1.3
3. Remove the pump plug from the control board and
earth plug from earth socket (see Fig. 87);
4. Unscrew the pump nut (see Fig. 88);
5. Unscrew the screw “S1” and remove the clip “S2” on
the pump volute (see Fig. 89);
6. Pull the pump toward you and remove the clip “S3”
securing the pressure gauge
(see Fig. 90);
7. Reassemble in reverse order.
Fig. 87
Fig. 88
Fig. 89
Fig. 90
S1
22.4.4 Removing the pressure relief valve
1. Carry out step 22.1.1 and 22.1.3;
2. Remove the clip securing the valve (see Fig. 84) and
pull it toward you;
3. Reassemble in reverse order; take care to ensure
the valve is in the correct position;
22.4.5 Removing the secondary heat exchanger
1. Carry out step 22.1.1 and 22.1.3;
2. Remove the 3 way valve motor as in step 22.4.2;
3. Disconnect the expansion vessel pipe.
3. Unscrew the two fixing screws “R” and pull it toward
you
(see Figs. 85 & 86a); );
4. Reassemble in reverse order;
The heat exchanger is so designed that it cannot be
remounted incorrectly;
Fig. 84
S2
S3
Fig. 85
R
Fig. 86a
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