Carbolite Gero 132 Manual
Installation, Operation and Maintenance Instructions
Controller Manual
132 Over-Temperature Controller
132 Over-Temperature Controller
MEN-132OT_CTRL (18-02-2022)
Contents
This manual is for guidance on the use of the Carbolite Gero product specified on the
front cover. This manual should be read thoroughly before unpacking and using the
furnace or oven. The model details and serial number are shown on the back of this
manual. Use the product for the purpose for which it is intended.
1.0 132 Over-Temperature Controller 3
1.1 Over-Temperature Protection 3
1.1.1 Controls 3
1.2 Operation 4
1.3 Over-Temperature Alarm 5
1.4 Sensor Break 5
1.5 Audible Alarm 6
2
1.0 132 Over-Temperature Controller
1 Display
2 Up button
3 Down button
4 Output indicator(s)
5 Setpoint display
6 Menu/OK button
7 Return button
8Actual temperature
display
1.1 Over-Temperature Protection
1.1.1 Controls
Most Carbolite Gero products are fitted with an instrument switch which cuts off power
to the controller and other parts of the control circuit.
To operate the controller, power must be supplied to the product and the instrument
switch must be on. If a time switch is included in the product circuit, this must be in
the 'ON' position.
When an over-temperature condition occurs, the controller cuts the power to a
contactor, which in turn cuts power to the heating elements. Power is not restored until
the controller is 'reset'.
Some components will operate after the over-temperature feature isolates the heating
circuit e.g. cooling fans will continue to operate, provided that there is a power supply
to the product.
3
1.2 Operation
To change the over-temperature alarm setpoint:
1. Use the up and down buttons to adjust the setpoint to the desired temperature.
2. Press the Menu/OK button to accept the new value. OK will appear briefly on the
lower half of the display.
The example pictured shows an over-temperature alarm setpoint being adjusted from
300°C to 500°C.
Note: The over-temperature alarm is configured so that the alarm will trigger when
the temperature increases above the over-temperature alarm setpoint.
For example, if the over-temperature alarm setpoint is set to 900°C, the alarm will
trigger when the actual temperature goes above 900°C.
4
1.3 Over-Temperature Alarm
If the over-temperature alarm state is triggered:
The product will stop heating and OVERTEMP will be displayed on the scrolling text on
the lower half of the display.
To acknowledge / reset the alarm:
Press and hold the return button.
Note: The over-temperature alarm cannot be acknowledged / reset until the actual
temperature drops below the over-temperature setpoint.
1.4 Sensor Break
If the thermocouple breaks or becomes disconnected, then the controller will register a
sensor break, and cut power to the heating elements.
The display will show SBRK and a scrolling OVERTEMP message.
5
1.5 Audible Alarm
If an audible alarm is supplied for use with the over-temperature controller, it is
normally configured to sound when the over-temperature alarm is triggered, and to
stop sounding when the alarm is acknowledged.
Note: The alarm may sound during controller start-up.
6
Notes
Service Record
Engineer Name Date Record of Work
The products covered in this manual are only a small part of the wide range of ovens,
chamber furnaces and tube furnaces manufactured by Carbolite Gero for laboratory
and industrial use. For further details of our standard or custom built products please
contact us at the address below, or ask your nearest stockist.
For preventive maintenance, repair and calibration of all furnace and oven products,
please contact:
Carbolite Gero Service
Telephone: + 44 (0) 1433 624242
Fax: +44 (0) 1433 624243
Email: [email protected]
Carbolite Gero Ltd,
Parsons Lane, Hope, Hope Valley,
S33 6RB, England.
Telephone: + 44 (0) 1433 620011
Fax: + 44 (0) 1433 621198
Email: [email protected]
www.carbolite-gero.com
Copyright © 2022 Carbolite Gero Limited
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