Technical data

26
13.1 Hand the Outdoor Pack users instructions (Part
Number: 8 716 102 841) and Benchmark booklet to the user or
purchaser for retention and instruct them in the efficient and safe
operation of the appliance and the heating/hot water system.
13.2 Discard the Danesmoor Utility user instructions (Part
Number: 8 716 145 137) and Worcester Bosch user instructions
(Part Number: 8 716 145 077).
13.2 Advise the user or purchaser of the precautions necessary
to prevent damage to the heating/hot water system and to the
building in the event of the heating system remaining inopera-
tive during frost conditions.
13.3 Finally advise the user or purchaser that for continued effi-
cient and safe operation of the appliance it is important that ade-
quate servicing is carried out by a qualified engineer at least
once per year.
Worcester Heat Systems Limited will be pleased to discuss and
offer a comprehensive maintenance contract.
13.4 Set the system controls to the users requirements.
WARNING: The appliance is serviced and repaired externally.
External equipment operated at 230volts should not be
serviced or repaired under adverse weather conditions.
14.1
The following should be carried out at least once per year
for 28 second Kerosene to ensure efficient, trouble free
operation.
Note: The service engineer should have access to the property to
check for system faults and reset/replace electrical safety devices.
Note: The service engineer should take any necessary
precautions to protect him/herself and any third party against
hot surfaces on the appliance.
Note: The Outdoor Pack is not load bearing it only provides
weather proofing for the boiler inside.
1. Carry out a pre-service check noting any operational faults.
2. Check and clean the burner.
3. Check and clean the intake grille at the end of the terminal
and remove any debris from around the appliance.
4. Check and clean the baffle retainer (Danesmoor utility 20/25,
26/32, Worcester Bosch 70/90 and 90/110 models only) as
shown in Fig. 32.
5. Check and clean the baffles.
6. Check and clean the heat exchanger surface.
7. Check the heat shield (Danesmoor utility 20/25 and 26/32
and Worcester Bosch 70/90 and 90/110 models only) as shown
in Fig. 32.
8. Check the combustion chamber base insulation board.
9. Check that the flue system is unobstructed and clean as
necessary.
10. Clean all oil filters.
Some of the servicing points are covered more fully in the
following instructions:-
14.2 Pre-Service Check
1.
Remove the Outdoor Pack front and top panels as described
in section 5.
2. Remove the boiler front and top panels as described in section
5 .
3. Operate the appliance and system, noting any faults which
may need to be corrected during the service.
14.3 Cleaning the Burner
IMPORTANT: Disconnect the electrical supply at the mains
before commencing any servicing. Turn off the oil at the service
cock.
1. Remove the burner.
(a) Isolate the oil supply at both the oil tank and the isolating
valve located close to the burner.
(b) Slacken the two M6 burner locking screws, using a 5mm
Allen key, and remove the burner.
2. Clean the fan impeller using the following procedure:
Electro-oil Inter B9 Burner
(a) Remove the two screws holding the combustion head in
position and withdraw the combustion head and air guide collar
(where fitted).
(b) Remove the three remaining screws holding the front cover plate
in position and withdraw the cover to expose the fan impeller.
(c) Clean both sides of the fan impeller and remove any debris
from the burner housing.
(d) Check that the impeller rotates freely.
(e) Clean the air inlet passage and check that the adjustment
mechanism operates freely.
(f) Re-assemble the components.
Electro Oil Inter B11
(a) Remove the acoustic fan inlet cover.
(b) Remove the three screws holding the fan cowl in position and
remove the cowl noting how the fan control flap is positioned
.
(c)
Check that the air control flap pivots freely and ensure the air
path to the burner head is clear.
(d) Clean both sides of the fan impeller and remove any debris
from the burner housing.
(e) Check that the impeller rotates freely.
(f) Re-assemble the components.
Electro Oil Sterling
(a)
Remove the air adjustment cover.
(b) Separate the main body of the burner from the burner front
by removing the M6 allen screw (located beneath the air
adjustment screw), using a 4mm allen key. Check the condition
of the Gasket between these two parts and replace if necessary.
(c) Note the position of the air damper adjustment and check the
air damper moves freely.
(d) Check the air path to the burner head is clear.
(e) Clean both sides of the fan impeller and remove any debris
from the burner housing.
(f) Check the impeller rotates freely.
(g) Re-assemble the components.
3. Remove the combustion head and thoroughly clean all
deposits.
4. Inspection of Mechanical Shut-off Valve.
a) Remove the nozzle.
b) Fasten an M5 screw, with a minimum length of 30mm, into
the threaded hole (A) and pull the screw to withdraw the check
valve.
c) Check that the nozzle holder is clear of any debris and clean if
necessary.
d) Check that the 3 holes in the check valve are clear of any
debris. Discard the check valve if the holes cannot be cleared or
if the unit is defective and replace with a new one.
e) Replace in the reverse order.
5. It is strongly recommended that the oil atomising nozzle is
replaced at each service. If this is not possible then remove and
clean the integral filter, but under no circumstances should the
nozzle be stripped into its component parts and never attempt
to clean the nozzle tip.
6. Check and reset the electrodes, where necessary, as shown in
Figs. 28, 29, 30 and 31.
7. Replace the combustion head and check that the nozzle lies
central to the combustion head and the head settings are as
shown in Figs. 28, 29, 30 and 31.
8. Withdraw the photocell from its housing and clean.
9. Remove and clean the oil pump internal filter using kerosene
or white spirit. The internal filter is accessed by removing the oil
pump cover on the Danfoss BFP 11 and Suntec AS47C and by
unscrewing and withdrawing the cartridge on the Danfoss BFP
41 as indicated in Fig. 6.
10. It is recommended that the standard flexible oil line is
replaced at each yearly service to prevent the possibility of a
leak due to ageing.
14. Routine Cleaning And Inspection
13. Instructions To The User