General Access; Internal Access; Automatic Air Vent - Potterton Powermax HE 85 Litre Installation And Servicing Instructions

Internal Access

Remove Front
Engine
Box Cover
Retaining
Screws -
Top Panel
Front
Fascia
PO WE -
R
+
CH
MA INS H.W .
BU RN TEM P
ON ER
LO CK
HW
OU T
RE SET SEL
C.H .
AD VAN +
CE
SEL
PR OG
-
PRO
G
Remove Front Fascia Securing Screws
Lift Off
Front Fascia Location Peg
Fig. 17
28
Replacement of Parts

General Access

Uunscrew Top Panel
2
and lift away
Pull forward Front
1
Panel at the bottom
and lift off
Retaining Screws - Top Panel
Unscrew Upper Panel at
4
the bottom and pull away
Retaining Screws - Upper Panel
3
Pull forward Bottom Panel
Access Panel
for Automatic
Air Vent - Bleed
Front
Fascia
Removal
Side Support
4.1 General Access
Warning: Before attempting to remove any
component from the boiler first disconnect the mains
electricity supply by removing the plug from the wall
socket or by switching off the boiler at the external
isolating switch.
Warning: The fan operating voltage is 325V d.c. Take
appropriate precautions. Allow at least 40 seconds to
elapse before handling the PCB within the boiler
control assembly.
Important: After removal or replacement of any gas
carrying component a test for gas soundness must
be made and functional check of the controls carried
out.
Important: Any 'O' rings, seals, gaskets or washers
disturbed during replacement of parts must be
visually inspected and replaced if worn or damaged.
Re-assemble all parts in reverse order.
1. Follow stages 1 - 4 (opposite) to remove the
outer panels.
Internal Access
2. Remove the screws securing the top engine
box cover and lift the cover away from the
boiler.
3. Remove the screws securing the front engine
box cover and lift the cover away from the
boiler.
4.2

Automatic Air Vent

Re-assemble all parts in reverse order.
1. Perform 4.1 General Access, remove the
access panel rather than the front engine box
cover.
2. Pull away the securing clip and lift out the air
vent parts as shown.
Pull out
Auto Air
Auto Air
Vent Parts
Vent
Pull away
Securing
Clip
Pump Body
Publication No. 5106226