Bosch DANESMOOR UTILITY 32-50 Instruction Manual download pdf (Page 41)

1 Clean the Burner:

Loosen clip to remove the flexible air inlet hose

(D) from the burner (RS flue systems only).

Remove the air intake cover (H) by releasing

the M4 screws.

Seperate the main body of the burner from

the front by removing the M5 screw ( J ),

located beneath the air adjustment screw

(K), using a 4mm allen key.

Check the condition of the gasket between

these two parts and replace if necessary.

Note the position of the air damper

adjustment and check the air damper moves

freely.

 Clean both sides ofthe fan impeller and

remove any debris from the burner housing.

 Check the impeller rotates freely.

Reassemble components.

2 Inspection of Mechanical Shut-off Valve:

Remove the nozzle (E).

 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.

Remove the combustion head and thoroughly

clean any deposits.

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. The electrode

assembly must be positioned at 3 o’clock as

shown.

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.

Danfoss BFP 11 L3 internal filter is accessed

by removing the oil pump cover (Q).

Danfoss BFP52E L3 internal filter is accessed

by unscrewing and withdrawing cartridge (R).

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.

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.

INSPECTION AND SERVICE

INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR UTILITY 32/50 & 50/708 716

109 711B 07.2010

SERVICING

& SPARES

8 716 109 711 b 07.10 14/7/10 09:59 Page 41

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Bosch DANESMOOR UTILITY 32-50 Instruction Manual Page 41

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