Strebel Mital, Руководство пользователя

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15.0 Maintenance
1.
Removal of Burner
•
Isolate both the electrical and gas supply to the
boiler.
•
Open the boiler control cover.
•
Remove the two self tapping screws at bottom of
front case.
•
Pull the front case forward, at the bottom and lift.
•
Remove the ten self tapping screws from the
outer combustion chamber cover.
•
Remove the self tapping screws from the inner
combustion chamber cover (Mital plus, Mital max,
Montreux plus and Montreux max) and remove.
•
Disconnect and remove ignition probe and either
pilot burner or flame detection probe.
•
Remove the four burner fixing screws and pull
assembly forward as per Figure. 21.
•
Check the injectors for damage or blockage.
•
Inspect the burner gas ways for damage or
blockage. Vacuum or blow out any lint or dirt.
•
Check the burner plaques for signs of cracking,
distortion or leaking. Replace if damaged.
•
Gently brush the top of the burner with a soft
brush and blow away any deposits.
•
Inspect the combustion chamber insulation for
signs of charring or damage. Replace if required.
•
Check the fan assembly for signs of wearing, over
heating or distortion.
•
Remove fan assembly and inspect for damage.
Remove any dust and replace.
Figure. - 21 Burner Fixing Screws.
2. Pilot Burner (Mital and Montreux)
•
Check the injectors for damage or blockage.
•
Inspect the burner gas ways for damage or
blockage.
•
Vacuum or blow out any lint or dirt.
3.
Clean Flueways
•
Cover the controls and burner injectors with a
waterproof sheet.
•
Remove flue hood by removing the three fixing
screws and disconnecting the electrical wires for
the fan.
•
Remove all loose deposits from the heat
exchanger, particularly between the fins, working
from above and below the heat exchanger, using
a suitable brush.
•
Once clean reassemble burner, fan, and pilot.
4.
After Service Checks
•
Check the distance between burner or pilot head
and the ignition and detection electrodes are
3mm.
•
Check pilot burner or flame detection probe are
correctly aligned.
•
Complete re-assembly of boiler and case.
•
Turn ON both the gas and electrical supply.
•
Check boiler ‘LIVE’ light is illuminated.
•
Set controls to ‘calling’.
•
Observe lighting sequence, ensuring quiet burner
ignition.
•
Check burner & pilot pressure and adjust if
required.
•
Observe flame picture of both pilot and burner.
15.1 Fault Finding
On the following page is a fault finding guide.
•
Column 1 Fault , states the current fault.
•
Column 2 Warning Lights , the Mital plus, Mital
max, Montreux plus and Montreux max have a
enhanced control panel to assist with fault finding.
You should look down the Warning Lights column
to find the sequence of lights which is displayed
on the boiler with reference to the fault.
•
Column 3 Consequences , relates to the
secondary faults.
•
Column 4 Possible Causes , of the fault in column
1.