MRF
16/22
MF 55-GB 1.21
13
3.6
Switching on for the first time
To minimise the chance of transport damage to the insulation, the binder in the insulation has
not been burnt off. (Burn off is the process of burning out organic binders from the insulation
boards). During this process the structure of the insulation changes and it can become brittle.
The furnace must be burnt off and the elements conditioned before it is ready for use.
1 Set microwave power to 50% and run for 2 hours
[See section 7]
to burn off any binder in
the insulation.
2 Open door and leave to cool for 30 minutes.
3 Make sure the Setpoint temperature is set to -20°C, or the furnace will not cool down at the
end of the cycle.
4 Make sure the microwave timer is off and or set to zero, or the microwave power will come
on after the program has finished.
[See section 7]
5 Create the following program for conditioning the elements.
[See section 8]
Ramp Units: Min
Cycles: 1
Event Outs
(No microwave power)
Holdback Type (Off)
Ramp to 800°C at 3.3°C per minute
Ramp to 1500°C at 5.0°C per minute
Dwell for 60 minutes.
Ramp to 1600°C at 5.0°C per minute
Dwell for 15 minutes
End Type Reset
6 Run the conditioning cycle. Note if the elements do not fully condition run the program
again.
The elements should have a glazed appearance if properly conditioned. Note there may be
some “patchy” areas on the surface of the elements where some of the glazing has flaked off,
this is normal.
