Pump Over-Run Thermostat; Sight Glass - Potterton Prorile Prima 30e Installation And Servicing Instructions

SERVICING INSTRUCTIONS - Page 25

PUMP OVER-RUN THERMOSTAT

4. Remove door by undoing the lower fixing screws and
lifting door off the two upper hinge brackets.
5. Disconnect the electrical connections as follows:-
1 red wire from terminal NO(4)
2 brown wires from terminal NC(2)
1 black wire from terminal C(3)
6. Remove the screw securing the thermostat to the
control box.
7. Remove the clip securing the thermostat bulb to the
flow pipe.
8. Remove the split grommet in the base of the boiler.
Feed the capillary and bulb through the hole.
9. Replacement is the reverse of removal. The bulb of
the new thermostat should be coated with heat
conducting paste. Ensure the rubber grommet makes
a good seal around the capillary.
10. Ensure that the capillary is secure in the clips ~
provided. Follow the full commissioning procedure as
detailed in the COMMISSIONING section of these
instructions. Page 18.

SIGHT GLASS

WARNING: GREAT CARE SHOULD BE TAKEN WHEN
HANDLING AND DISPOSING OF A BROKEN SIGHT
GLASS.
3. Remove door by undoing the lower fixing screws and
lift door off the two upper hinge brackets.
4. Remove three M4 nuts from sight glass retainer and
remove sight glass assembly. See above.
5. Replacement is the reverse of removal. Taking care
that the clear circle in the sight glass lines up viewing
hole in combustion chamber door. NOTE new gaskets
must be used when sight glass is fitted.
FAN
1. Switch off the external electricity supply by
disconnecting the plug at the socket or switching off
the external isolating switch.
2. Remove controls cover and case door as described in
1. 'Preparing the Boiler for Servicing', operations A and
B.
3. Disconnect the two flexible tubes from the flue elbow.
4. Remove thumb screw securing the flue elbow and
withdraw elbow. Take care not to damage the gasket.
On vertically flued boilers remove two thumb screws
and slide the vertical flue adapter up into the flue duct.
5. Disconnect the fan supply and earth leads from the
connector adjacent to the fan.
6. Separate fan from fluehood by removing the two
securing screws.
7. Replacement is the reverse of removal. Ensure on re-
assembly that the fan is correctly located in the rear
retaining bracket.
8. Follow the full commissioning procedure as detailed in
the COMMISSIONING section of these instructions.
Page 18.