Worcester 12/18 Instruction Manual page 40

8 716 113 389d 30/3/10 14:01
BENTONE
STERLING 40 & 50
12/18
P
18/25
RIELLO
RDB 1 & 2.2
12/18
18/25
P H
25/32
DANFOSS
BFP 11 L3 OIL PUMP
A
A - Retaining screws - cover
B - Cover - oil pump
40
INSPECTION AND SERVICE
Page 40
H D
Electrode gap
2.5 - 3.0mm
F
5mm
K
7.5mm
D
F
2.5mm
Electrode gap 4mm
SUNTEC
AS47C OIL PUMP
A
B
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR HEATSLAVE EXTERNAL 12/18-18/25-25/32
N
M
O
L
E
5mm
E
5mm
K
RIELLO
RDB OIL PUMP
A
B
B
INSPECTION AND SERVICE
1 Clean the Burner:
Remove the air intake cover (H) and clear
any debris from the air intake and air damper.
Disassemble the burner to allow access to
the fan impeller.
Check the condition of the gaskets between
these parts and replace if necessary.
Note the position of the air damper
adjustment and check the air damper moves
freely.
Clean both sides of the fan impeller and
remove any debris from the burner housing.
Check that the impeller rotates freely.
Reassemble the components.
Remove the combustion head (K) and
thoroughly clean any deposits.
Remove the nozzle (E).
2 Bentone Sterling 40 & 50
12/18 & 18/25 Inspection of Mechanical
Shut-off Valve:
Fasten an M5 screw, with a minimum length
of 30mm, into the threaded hole (L) and pull
the screw to withdraw the check valve (M).
Check that the nozzle holder (N) is clear of
any debris and clean if necessary.
Check that the three holes in the check valve
(M) are clear of any debris. Check the
condition of the 'O' ring (O). Discard the
check valve if the holes cannot be cleared, if
the unit is defective or if the 'O' ring is
damaged and replace with a new one.
Refit the check valve.
Riello RDB 1 & 2.2
12/18, 18/25 & 25/32
Check the nozzle holder is clear of any debris
and clean if necessary.
ALL MODELS
Fit a new oil atomising nozzle (E).
DO NOT dismantle the nozzle and DO NOT
clean the nozzle tip.
Check the electrodes (F) and reset if
necessary as shown opposite.
Refit the combustion head. Check that the
nozzle (E) lies centrally in the combustion
head and the head settings are as shown.
Ensure that the photo cell is lined up with the
sight hole.
Withdraw the photocell (P) from its housing
and wipe clean.
Remove the oil pump internal filter, clean in
kerosene and reassemble.
The internal filter is accessed by removing
screws (A) and the oil pump cover (B) on the
Danfoss BFP 11 L3, Suntec AS47C and Riello
RDB.
IMPORTANT
Replace the standard flexible oil hose/s
at every annual service to prevent the
possibility of oil leakage.
Reassemble the burner components.
Check the sponge O-ring seal located
around the combustion head and replace if
necessary.
This seal must be in good condition since
failure will cause flue gases to escape into
the room.
8 716 113 389d (03/2010)