38
6.3
Renewing fuse
WARNING
Electrical installations may only be carried
out by a qualified electrician.
Fig. 1
Set the blocking switch to “0” and disconnect the
heat generator from the mains (main switch, fuse).
Fig. 2
Remove the front casing according to the proce
-
Fig. 3
Remove the cover from TopTronic
®
E - WEZ
(press to the side and remove).
Fig. 4
Renew fuse (T 10A 250 V).
Fig. 35
Fig. 5
Mount protecting cover, close casing.
Fig. 6
Restore the electrical power supply.
6.4
Cleaning the boiler and leakage test
Cleaning of the UltraOil
®
may only be carried out by an
au tho rised installer or by the Hoval customer services.
Reliable and safe operation of an oil-fired boiler and
achieve ment of an optimum level of efficiency and clean
burn ing can only be guaranteed if the appliance is main
-
tained and cleaned on a regular basis.
An inspection and cleaning is necessary on an annual
ba sis. For this, it is recommended you conclude a mainte
-
nance contract with the Hoval customer services, or with
an authorised specialist dealer.
Where oil-fired boilers have been in operation through-
out a building stage, exposed to enhanced amounts of
dust, an inspection and examination of the contamination
is to be carried out once the building work is finished, and
if necessary cleaning must be arranged.
6.4.1 preparation for cleaning the boiler
and burners
WARNING
The heat generator must be de-energised for
maintenance. Set the blocking switch to “0”
and disconnect the heat generator from the
mains (e.g. main switch).
WARNING
All electric power supply circuits must be
switched off before accessing the terminals.
-
Await standby mode / fan idle running
-
Remove front cover (1, Fig. 37). To do this, release la-
te ral locking bolt (1a) (turn approx. ¼ turn to the left
and pull out as far as the stop). Lift the front cover (1)
straight upwards and remove towards the front.
-
Remove front cover (2). To do this, release lateral lock
-
ing bolt (2a) (turn approx. ¼ turn to the left and pull out
as far as the stop)
-
Lift and remove the lid (2b).
-
Remove locking screws (2c) on the left and right.
-
Lift the side walls (2d) off by sliding them slightly to
-
wards the front.
-
Fold the platform (3) down
-
Undo the burner plug-in connections
(burner cable, remote reset cable)
-
Release the lock nuts
-
Open the burner with boiler door (4) upwards and hold
in place with the latching lever
-
Clean the burner
-
Remove the combustion chamber insert
-
Remove the lid to the cleaning aperture (5, Fig. 38)
The siphon must be cleaned once a year. For
cleaning the siphon the siphon bottom part
-
Clean the neutralisation box KB23,KB24 (if fitted) as
described in chapter 6.5. For cleaning the neutralisa
-
tion box KB22 (if fitted) without granulate, remove the
neu tralisation box and clean.
-
Unscrew the siphon bottom part (6, Fig. 38) to collect
the cleaning water
-
The cleaning scraper included in the scope of delivery
is suitable for cleaning the aluFer
®
pipes. For a detailed
de scription of how to clean the combustion chamber
and the aluFer
®
4 213 787 / 01
MAInTEnAnCE
Summary of Contents for UltraOil 65
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