Manual - Formech 300XQ
22
Service / Repair
Replacing a heating element
ELECTRICAL MAINTENANCE SHOULD ONLY BE ATTEMPTED BY SUITABLY QUALIFIED TECHNICIANS.
How to check a heating element
If you notice there is a cold area on heated plastics, it may be that a heating zone or heating element is not
working correctly. In either case the fi rst step is to check the wiring at the terminal block. It is not always
obvious that they are loose or disconnected.
1- First, check that the heating zones are set correctly, set all the zones to 70% and check for even heat and
softening plastic when the heater is held over the forming are with plastic sheet fi tted. Make a note of areas
where the plastic remains hard to determine if it is a single element of entire zone.
2- If an entire zone is not functioning then remove the top cover and check that the wiring is not loose or
has become disconnected for that particular zone. You will have to remove relevant terminal block covers
to determine this. If all appears OK then set the defective zone to 100% and check the voltage at the zone
using a suitable volt meter.
3- If no voltage is present then contact Formech for service and advice.
If a single element is found to be faulty then it will require replacement.
Unplug the machine from the mains
Bring the heater completely
forward and remove the 4 screws
retaining the cover on top of the
heater.
The front 2 screws are retained with
an internal plate that will fall when the
screws are removed. Retain this plate
for fi tting during reassembly.
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