Formech 450 Installatie-, Bedienings- en Onderhoudshandleiding - Pagina 13

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Service\Repair
Replacing a heating element - continued
!
Undo the two Allen screws on the top and the two on the underside of the front
section of the heater enclosure. The front section of the heater panel can now be
pulled away from the main body of the heater. Rest it forward on the clamp frame.
The temperature regulator blocks are now visible. At this stage check that the wires
are fully tightened and that the fault was not merely a loose connection or a
disconnected clip.
!
Loosen the two Allen screws located on the top right and left sides of the heater
holding the frame onto the black mesh. Do not unscrew these any more than
necessary.
!
Remove the mesh by sliding forward and out of the frame.
!
Remove screw from the terminal block of offending element.
!
Remove the retaining clip holding the faulty element.
!
Place hand underneath heater and remove element.
!
Push new element into hole and fix clip from top.
!
Ensure that the connections are fully tightened and correctly wired.
!
Reverse the above procedure to re-assemble.

Electrical troubleshooting

In the event that neither the heater nor the pump will work check that your supply is OK.
Check the fuse located in the mains plug. The fuse is a standard 1" x 1\4" BS1362 type.
It is rated at 13Amps.
Machines supplied outside the UK may not be fitted with a fused plug. The machine will be
fused by a wall mounted circuit breaker or fuse.
If neither the fuse nor the mains supply are faulty then turn off the machine.

Unplug the machine from the mains

If the fault still cannot be found remove the front or side panel to allow access to the machine
interior.
Check the pump switch connections if the pump only is down.
If all the connections are good then the switches can be checked for continuity.
Note: Continuity should be obtained between the top and bottom contacts of the switch
not side to side.
If the vacuum pump motor does not run, check the electrical supply. If the motor smells
strongly of burnt lacquer then it is probably burnt out and the entire pump\motor assembly
needs replacing.
If the supply is present but the motor does not run, the capacitor may be faulty.
Formech 450
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