Techne HB-1D - Manual (Page 28)

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ADDITIONAL INFORMATION
Note that this equipment should only be dismantled by properly trained personnel. Removing the
outer cover exposes potentially lethal mains voltages. There are no user serviceable parts within this
equipment.
FAULT FINDING
Should you have any problems with your HB-1D which cannot be easily remedied, you should
contact your supplier and return the unit if necessary. Contact the Bibby Scientific Ltd. Service
Department (details given below) to obtain information on how to return the unit. Fill in the
Decontamination Certificate provided with the unit and include the serial number and details of the
fault observed. Please remember to return the unit in its original packing. Bibby Scientific Ltd.
accepts no responsibility for damage to units which are not properly packed for shipping: if in doubt,
contact your supplier, giving the full serial number of the unit.
FUSES
If the controller fails to light when power is supplied to the unit the fuses may have blown. Check that
there is no external cause such as a faulty plug; check both fuses and replace any faulty fuse with one
of the correct value. Fuse values are given on the label next to the mains input socket.
SAFETY OVER-TEMPERATURE CUT-OUT
The over-temperature cut-out is a sensitive mechanical device and mechanical shock can cause it to
trip.
In the event of no heater power, check the mains plug and lead, then reset the cut-out control by
depressing the centre of the button.
Repeated operation of the cut-out indicates a serious fault: you may need to return your unit to your
supplier for repair.
IF AN INCORRECT MESSAGE IS DISPLAYED
If a message is displayed which shows an unexpected temperature or HELP, this may indicate a fault
with the PRT (temperature sensor). This could indicate for example that a wire has broken; a wire or
the connector to the PCB has become disconnected; or the PRT has been broken. You should contact
the service department at Bibby Scientific Ltd. or your Techne dealer and return the unit if necessary.
INSULATION TESTING
This equipment is fitted with RFI suppression circuitry. Any check of the electrical insulation by means
of high voltage dielectric testing (for example as in BS EN 61010-1) must be carried out using only a
DC voltage.
This unit contains semiconductor components which may be damaged by electric field effects.