Ferroli optima 2001 VMF7 Installation Instructions Manual page 33

6.0 D.H.W. TEMPERATURE SENSOR OR CENTRAL HEATING TEMPERATURE SENSOR
a) Refer to section 1, items a, b, c, d, f, g, h (left hand side panel) and k.
b) Identify the sensor from fig. 2.
c) Disconnect the electrical connections to the sensor.
d) Unscrew the temperature sensor.
e) Re-assemble in reverse order (Polarity Immaterial).
7.0 PRESSURE RELIEF VALVE
a) Refer to section 1, items a, b, (central heating) c, d, and g.
Note - If this valve is not working correctly then the water can only be drained from the appliance by, removing the pressure
relief valve.
b) Release the outlet union to the valve and undo the valve union connection, taking care not to lose the sealing washers.
c) Remove the pressure relief valve outlet fitting.
d) Re-assemble in reverse order, and check the operation of new valve.
8.0 PUMP
a) Refer to section 1, items a, b (central heating), c, d, f, g, h (right hand side panel), j and k.
b) Loosen the two pump union connections.
c) Remove electrical cover on pump, one screw (fig. 40). (Rotate pump to remove cover).
d) Disconnect the live, neutral and earth connection.
e) Release the cable retaining gland and pull the cable clear.
f) Disconnect the two pump union connections. Remove pump (Retain washers if not re-newing).
g) Re-assemble in reverse order (fig. 40).
Note - Ensure the arrow indicating the direction of flow, on the pump housing is pointing upwards, and the speed setting is at 3.
9.0 AUTOMATIC AIR VENT
a) Refer to Section 1, items a, b (central heating), c, d, f, g, h, (right hand side panel) and k.
b) Loosen the pump union connections and swivel the pump to the right.
c) Unscrew the automatic air vent (fig. 2, item 36).
d) Re-assemble in reverse order ensuring the «O» ring is fitted (fig. 41) and that the venting cap is loose.
Replace pump ensuring that the arrow indicating flow points upwards.
Washer
Washer
Cover fixing screw
Fig. 40
2001
Automatic air vent
Venting cap
O-ring
Fig. 41
33