13.0
Changing Components
36
13.10
Pressure Gauge
1. Drain the boiler (see Section 13.1 paragraph 2 & 3).
2. Undo the nut retaining the capillary in the connection at
the return pipe (Fig. 55).
3. Depress the two lugs on either side of the pressure gauge
and feed through facia (Fig. 54).
4. Fit new pressure gauge and reassemble in reverse order.
13.11
Pressure Relief Valve
(Fig. 56)
1. The pressure relief valve is positioned on the hydraulic
manifold at the back of the pump.
2. Drain the boiler (see Section 13.1 paragraph 2 & 3).
3. Disconnect the union between the valve and the discharge
pipe.
4. Slacken the screw retaining the valve.
5. Pull the valve upwards to disengage it.
6. Fit the new pressure relief valve and reassemble in reverse
order.
Expansion Vessel
removed for clarity
Fig. 54
Lug
Pressure Gauge
Pressure Gauge
Bracket
Fig. 55
Capillary
Return Pipe
Fig. 56
Pressure Relief Valve
Summary of Contents for System 100 HE Plus
Page 49: ...16 0 Notes 49 ...
