INSPECTION AND SERVICE

12/18 & 18/25

 

 

 

 

 

 

 

1 Clean the Burner:

 

 

 

 

 

 

 

Remove the air intake cover (H) and clear

 

 

 

 

 

 

 

 

P

H

D

 

 

 

 

 

any debris from the air intake and air damper.

 

 

 

 

 

Disassemble the burner to allow access to

 

 

 

 

 

 

 

 

the fan impeller.

 

 

 

 

N

 

 

 

Check the condition of the gaskets between

 

 

 

 

 

 

 

these parts and replace if necessary.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note the position of the air damper

 

 

 

Electrode gap

 

 

 

 

adjustment and check the air damper moves

 

 

 

 

 

 

 

freely.

 

 

 

2.5 - 3.0mm

 

 

 

 

 

 

 

 

 

 

 

Clean both sides of the fan impeller and

 

 

 

 

 

 

 

M

 

 

 

 

 

 

 

remove any debris from the burner housing.

 

 

 

 

 

 

O

 

 

 

 

 

 

L

 

Check that the impeller rotates freely.

 

 

F

 

 

 

 

 

 

E

 

 

 

Reassemble the components.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Remove the combustion head (K) and

 

 

5mm

5mm

 

 

 

 

thoroughly clean any deposits.

 

 

 

 

 

 

Remove the nozzle (E).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2 12/18 & 18/25 Inspection of Mechanical

 

 

K

 

 

 

 

 

Shut-off Valve:

 

 

 

 

 

 

 

Fasten an M5 screw, with a minimum length

 

 

 

 

 

 

 

 

 

 

 

7.5mm

 

 

 

 

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

25/32

 

 

 

 

 

 

 

condition of the 'O' ring (O). Discard the

 

 

 

 

 

 

 

check valve if the holes cannot be cleared, if

P

H

D

 

 

 

 

 

 

 

 

 

 

the unit is defective or if the 'O' ring is

 

 

 

 

 

 

 

 

damaged and replace with a new one.

 

 

 

 

 

 

 

 

Refit the check valve.

F

E

5mm

5mm

 

K

 

Electrode gap 4mm

DANFOSS

SUNTEC

RIELLO

BFP 11 L3 OIL PUMP

AS47C OIL PUMP

RDB OIL PUMP

A

A

A

 

B

 

B

 

 

A - Retaining screws - cover

B - Cover - oil pump

25/32

Check the nozzle holder is clear of any debris and clean if neccessary.

12/18, 18/25 & 25/32

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 photocell 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.

Replace the standard flexible oil hose/s at every annual service to prevent the possibility of leakage due to ageing.

BReassemble 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 cabinet.

SERVICING

& SPARES

38

INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR HEATSLAVE EXTERNAL 12/18-18/25-25/32 8 716 113 389b (09/07)

INSPECTION AND SERVICE

Page 38 Page 40
Page 39
Image 39
Bosch Appliances 18/25 Clean the Burner, Fan impeller, These parts and replace if necessary, Freely, Remove the nozzle E
Page 38 Page 40

25/32kW, 12/18, 18/25 specifications

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