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Jliill'i
,
AALBORG
FAULTS AND
RECTIFiY'ING
FAULTS OM5560 92#A.2
I -
INDUSTRIES
Faults and rectifying faults
1
Trouble shooting
In the event
of
fault conditions the basic requirements for correct operation must be
examined first:
•
•
•
Check the electric supply (control and supply voltages).
Check that all regulating and control devices are correctly set.
Are the safety devices in normal operating condition?
•
Is the burner getting fuel, are valves in the fuel line open,
is
there oil in the tank?
When it is established, that the fault
is
not due to the above mentioned, the individual
burner functions and parts must be checked according to the fault finding chart in
Table
1.
Burner motor does not start. Lockout
oc·
curs.
Burner motor does not start.
Control loop closed (signal lamp
of
control
loop
is
lit), but the program
of
the control
unit does not start.
servo motor.
Incorrect setting on cam disk
in
Servo motor.
Faulty servo motor.
control unit.
Servo motor does not reach the position
of
full load
of
air dampers:
Burner motor starts, program remains at pre· faulty servo motor.
purge period. faulty limit switch
in
servo motor.
Burner motor starts, control voltage from
control unit to ignition transformer
is
switched on,
no
ignition and after a sholt
time lockout occurs.
21-58/60
incolTect setting on cam switch.
Dirty
or
worn ignition electrodes, insulator
cracked.
Ignition electrodes too far apart.
Cable damaged.
transformer.
Find cause and remedy.
Replace.
Replace.
Check and adjust.
Check and adjust.
Clean or replace.
Adjust according
to
instructions.
Replace.
Language UK
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