B&C Technologies IM Series Industrial Ironer - Manual (Page 140)

14
MAINTENANCE
Combustion
The optimum calibration of the burner requires an analy-
sis of the flue gases. Significant differences with respect
to the previous measurements indicate the points where
more care should be exercised during maintenance.
Gas leaks
Make sure that there are no gas leaks on the pipework
between the gas meter and the burner.
Flame inspection window
Clean the flame inspection window (A).
Combustion head
Open the burner and make sure that all components of
the combustion head are in good condition, not
deformed by the high temperatures, free of impurities
from the surroundings and correctly positioned. If in
doubt, disassemble the elbow fitting 7)(B).
Servomotor
Disengage the cam from servomotor and turn it back-
ward and forward by hand to make sure it is free moving.
Now engage cam again.
Burner
Check for excess wear or loose screws in the mecha-
nisms controlling the air damper and the gas butterfly
valve. Also make sure that the screws securing the elec-
trical leads in the burner connections are fully tightened.
Clean the outside of the burner, taking special care with
the linkages joints and cam.
Combustion
Adjust the burner if the combustion values found at the
beginning of the operation do not comply with the regu-
lations in force, or do not correspond to good combus-
tion.
TO OPEN THE BURNER (B):
- Switch off the electrical power.
- Remove screw 1) and withdraw cover 2).
- Disengage the swivel coupling 3) from the graduated
sector 4).
- Remove screw 5), the split pin 9) and pull the burner
back by about 4” on the slide bars 6).
- Disconnect the probe and electrode leads and then
pull the burner fully back.
- Turn the burner as shown in the figure and fit the split
pin 9) into one of the slide bar holes so that the burner
remains in position.
Now extract the gas distributor 7) after having removed
the screw 8) and disconnecting the pilot gas line.
TO CLOSE THE BURNER (B):
- Remove the split pin 9) and push the burner until it is
about 4” from the sleeve.
- Re-connect the leads and slide in the burner until it
comes to a stop.
- Refit screw 5), the split pin 9) and pull the probe and
electrode leads gently out until they are slightly
stretched.
- Re-couple the swivel coupling 3) to the graduated
sector 4).
- Connect the pilot gas line.
(A)
FLAME INSPECTION WINDOW
D484
(B)
OPENING THE BURNER
D2268
130