Worcester GREENSTAR CAMRAY EXTERNAL 12/18 Instruction Manual page 40

A
Q
J
I
12/18
Plan sectional view
25/32
Plan sectional view
39
INSPECTION AND SERVICE
L
B
C
E
F
18/25
D
Plan sectional view
P
N
O
M
IMPORTANT when refitting
the combustion chamber
access door (4)
P
N
Combustion chamber
M
access door tightening
sequence.
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR CAMRAY EXTERNAL 12/18-18/25-25/32
K
P
500ml
N
G
O
M
INSPECTION AND SERVICE
External oil filter:
Remove the paper element from the external
oil filter and replace it. If the filter contains a
washable element, thoroughly clean in
kerosene and reassemble into the filter.
Clean the boiler:
Manifold access:
Remove top cover by releasing the
screws (A) at each corner and lift free.
Release screws (B) to remove the flue manifold
access cover (C) and clear any debris.
Check the condensate route (D) is clear and
clean the condensate trap and pipework.
Check the flue system and clean if necessary.
Remove the baffle retainer (E) and baffles (F)
from the secondary heat exchanger.
Check and clean the secondary heat
exchanger surfaces.
NOTE: Do not use wire brushes and
cleaning agents to clean the stainless steel
secondary heat exchanger components.
Pour 500ml of water into drain (G) to refill the
condensate trap.
Clean the secondary heat exchanger baffles
(F) if necessary and refit correctly.
Refit the baffle retainer (E).
Check the seal on the manifold access cover
(C) and replace if necessary.
Refit the flue manifold access cover (C)
and secure with screws (B).
Combustion chamber:
Release the M10 retaining nuts and washers ( I )
and remove combustion chamber access door ( J ).
Check the fibreglass rope seal on the
combustion chamber access door ( J ) and
replace if necessary.
Remove the 2 screws (K) and baffle access
panel (L) located at the top of the primary heat
exchanger and remove the baffle retainers (M).
Remove the baffles (N) and restrictor plate/s
(O, not on 25/32 model), clean and check
the condition of the baffles and the restrictor
plate/s. Replace any parts considered to be
badly corroded/degraded.
Remove the acoustic insulation insert (P).
Thoroughly clean all of the heat exchanger
surfaces using a suitable brush and clear all
loose debris from the combustion chamber
and upper chamber.
Check the condition of the combustion
chamber access door insulation. If the
insulation is damaged the door assembly
must be replaced.
Check the condition of the baffle access
panel seal.
Refit the acoustic insulation insert (P).
Refit the items in reverse order ensure the
baffles (N), baffle retainers (M) and restrictor
plate/s (O, not on 25/32 model) are correctly
fitted for the boiler output as shown in the
plan view opposite.
Refit baffle access panel (L).
Refit combustion chamber access door (J).
Secure with nuts and washers ( I ) and tighten until
the door is firmly secured using the sequence
shown opposite. Do not over tighten the nuts.
Fire valve:
Check that the oil supply pipe has a fire valve
fitted externally to the building with the fire
valve sensor located within the
appliance case. A fire valve sensor clip (Q) is
provided for this purpose.
8 716 112 700a (02.07)