Temperature; Automatic Air Release Valve; Expansion Vessel - Savio 20/1 MFS User Manual

Servicing instructions
6.25 Temperature ---pressure gauge
1 Ensure electricity is switched off at main isolator;
2 remove the front panel and the right panel of the case and lower
the control panel (sect. 6.2);
3 drain the main circuit (sect. 6.3);
4 with a suitable fork spanner hold the connector " A" and unscrew
the nut " B"removing the pressure gauge pipe;
5 remove thermometer bulb " C"from the outlet pipe on the main
heat exchanger;
6 remove the temperature---pressure gauge from the control
panel by pressing on the elastic splines " D" which hold it in posi-
tion;
7 reassemble in reverse order.
6.26 By---pass
1 Ensure electricity is switched off at main isolator;
2 remove the front panel of the case and lower the control panel
(sect. 6.2);
3 drain the main circuit (sect. 6.3);
4 remove fork " A"(back view) which holds the by---pass to the
water deviation body;
5 remove the by---pass from the water deviation body.
The by---pass has a profiled internal element: when assembling the
by---pass, the two flat surfaces must be positioned horizontally.
6.27

Automatic air release valve

1 Ensure electricity is switched off at main isolator;
2 drain the main circuit (sect. 6.3);
3 remove the valve by hand unscrewing it;
4 reassemble in reverse order.
6.28

Expansion vessel

1 Ensure electricity is switched off at main isolator;
2 remove the front panel and the left panel of the case and lower
the control panel (sect. 6.2);
3 drain the main circuit (sect. 6.3);
4 completely loosen the lower connector indicated which con-
nects the expansion vessel to the appliance;
rev. 17.09.93
C
A
B
D
D
A
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