C.I.B. UNIGAS - M039134CD
25
At least once a year carry out the maintenance operations listed below. In the case of seasonal servicing, it is recommended to carry
out the maintenance at the end of each heating season; in the case of continuous operation the maintenance is carried out every 6
months.
PLEASE, READ CAREFULLY “WARNINGS” CHAPTER, AT THE BEGINNING OF THIS MANUAL.
ROUTINE OPERATIONS
z
Inspection and cleaning of the light oil filter cartdrige; replace it if necessary.
z
Check the overall condition of the flexible light oil hoses and make sure there are no signs of leakage;
z
Inspection and cleaning of the filter inside the light oil pump: filter must be thoroughly cleaned at least once in a season to ensure
correct working of the fuel unit. To remove the filter, unscrew the four screws on the cover. When reassemble, make sure that the
filter is mounted with the feet toward the pump body. If the gasket between cover and pump housing should be damaged, it must
be replaced. An external filter should always be installed in the suction line upstream of the fuel unit.
z
Disassembly, inspection and cleaning of the combustion head. Respect the measurements listed on pag. 30 carefully during re-
assembly.
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Inspection and cleaning of ignition electrodes (pag. 28) and respective ceramic insulators: clean, adjust, and replace if necessary.
z
Disassemble and clean the light oil nozzles (pag. 28).
IMPORTANT: cleaning must be performed using solvent, not metal tools!
At the end of maintenance operations after first reassembling the burner, light the flame and check its shape, replacing the nozzle whe-
never a questionable flame shape appears. Whenever the burner is used intensely, we recommend preventively replacing the nozzle at
the start of each heating season;
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Inspect and thoroughly clean the flame detection photoresistor and replace if necessary. In case of doubt, check the detection cur-
rent after first starting the burner by following the procedure illustrated in Fig. 56.
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Clean and grease levers and rotating parts.
Removing the combustion head
WARNING: ALL OPERATIONS ON THE BURNER MUST BE CARRIED OUT WITH THE MAINS DISCONNECTED AND
THE FUEL MANAUL CUTOFF VALVES CLOSED!
ATTENTION: READ CAREFULLY THE “WARNINGS” CHAPTER AT THE BEGINNIG OF THIS MANUAL..
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Remove the burner’s cover by unscrewing the fixing
screws.
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Slacken the light oil pipes
T1
and
T2
from the pump (Fig.
38).
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Disconnect the ignition cables
CA1
and
CA2
from the
transformer
TA
(Fig. 39).
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Remove the 4 screws
V1
-
V4
shown in Fig. 41.
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Disconnect the connector
CE
fron the solenoid valve
EV2
ATTENTION: the screw V1 is longer than the other
and must be replaced in the same position!
z
Withdraw the photoelectric cell
FR
from its housing (Fig.
42).
ATTENTION: avoid to withdraw the photoelectric cell
drawing its cable!
z
Remove the combustion head from its housing .
z
Clean the combustion head by a compressed air blow or,
in case of scale, scrape it off by a scratchbrush.
z
Replace the combustion head.
z
Replace the burner’s cover.
Fig. 38
PART III: MAINTENANCE
T
T1
T2
