.
Unscrew the fixing screw of the fan wheel.
.
Remove intermediate bushing and coupling head.
.
Withdraw the fan wheel from the motor shaft using an extractor.
.
Loosen the wedge and the base bushing.
5.4.3
5.4.3
Mounting the fan wheel
Mounting the fan wheel
.
Place the base bushing.
.
Set the wedge into the shaft slot.
.
Pull the fan wheel to its place using a binder plug. The fan wheel lies against the base
bushing.
.
Place the coupling head and the intermediate bushing.
.
Fasten the fan wheel with fixing screws to the motor shaft.
.
Place the motor and fasten the screws.
.
Support with hand the intermediate shaft and install the oil pump. Fix the pump with
locking screws.
.
Check the axial gap of the coupling heads (1-2 mm). Adjust, if necessary.
.
Place the air dampers.
.
Fix the pressure pipe of the oil pump (remember to vent the oil pump).
.
Connect the electrical cable to the motor.
.
Fix the fuses and connect the burner to the mains (check direction of rotation in the
motor).
5.5.
5.5.
Trouble shooting, 3-stage burner, oil use
Trouble shooting, 3-stage burner, oil use
5.5.1
5.5.1
Basic checks
Basic checks
In the event of fault conditions the basic requirements for correct operation must be first
examined:
1.
Check the electric supply (control and supply voltages).
2.
Check the fuse on the control unit by pressing the control unit reset button. If the fuse
is intackt this should cause a fault condition lockup.
3.
Check that all regulating and control devices are correctly set.
4.
Check that all the safety devices are in normal operating condition
5.
Check is the burner getting fuel, are the valves in fuel line open, is there oil in the tank
6.
Check is there sufficiently water in the heating system?
7.
Check that the direction of motor rotation is correct
When it is established, that the fault is not due to above mentioned, the individual burner
functions must be checked. Reset the burner control unit if it is in lockout position (signal
lamp lights). Burner starts, when the sequence switch has run to its start position and
other prerequisites for start are fulfilled (see chapter Burner Automation; Operation
”
).
Observe the burner functions.The symbol appearing above the reading mark indicates
The symbol appearing above the reading mark indicates
the possible kind of fault
the possible kind of fault (see chapter
”
Control Program under Fault Conditions and
Lockout Indication
”
). Measuring instruments can be used for finding of the fault.
RPMARINES 30840641GB
45 (57)
5. Maintenance