Basic Operating Cycle - Carbolite Gero GPCMA 174 Installation And Operation Instructions Manual

The door is secured using 8 manual screw bolts, and features an electrical interlock
which prevents the door from being opened while the furnace is in operation.
To access the furnace chamber:
Unscrew the door bolts and flip them back away from the door.
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Whilst holding both front handles, gently pull the door directly outwards, taking
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care to avoid the door plug making contact with the inside of the retort chamber.
Using the double pivot system, carefully guide the door out and away from the fur-
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nace and move it horizontally across to the side, at all times ensuring the hot face is
directed away from the operator(s).
Note: Do not allow the door to swing freely as this could result in operator injury or
damage to the furnace door plug.
10.3

Basic Operating Cycle

This product is fitted with a mains isolation switch which cuts off power to the control
circuit.
1. Connect the product to the electrical supply
2. Turn on the mains isolation switch on the lower left hand side of the furnace case.
3. Turn on the instrument switch to activate the temperature controllers. The con-
trollers illuminate and go through a short test cycle
4. Over-Temperature option only:. If the digital over-temperature option has not
yet been set as required, set and activate it according to the over-temperature
controller instructions.
5. If a setpoint has been set on the main temperature controller, the product will
start to heat up. The heating lamp(s) will glow steadily at first and then flash as
the product approaches the desired temperature or a program setpoint.
6. Over-Temperature option only: If the over-temperature circuit has tripped, an
indicator on the over-temperature controller flashes and the heating elements are
isolated. Find and correct the cause before resetting the over-temperature con-
troller according to the instructions supplied.
7. To switch off power to the heating elements, reduce the setpoint value to 0°C.
8. To switch the product off, turn off the instrument switch, then turn off the mains
isolation switch.
Note: If the product is to be left switched off and unattended, isolate it from the
electrical supply.
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