Techne TC-3000X - Manual (Page 52)

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ADDITIONAL INFORMATION
Brief fault finding notes and a list of replacement parts are given in this section.
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 unit which cannot be easily remedied, you should contact your
supplier and return the unit if necessary. Please include details of the fault observed and 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 and software version number (shown when the unit is first switched on).
FUSES
If neither the power light nor display on the front panel is lit, one of the two fuses may have blown.
Check that there is no external cause, such as a faulty plug or lead. Check both fuses and replace the
faulty fuse with a new one of the correct value (fuse values are given on the label next to the power inlet).
Note that fuses should only be replaced by a qualified electrician.
The holder for the two fuses is built into the mains input socket. First remove the power cable and then
gently prise the fuse drawer open with a flat-bladed screwdriver or similar tool.
Each fuse can be removed by using the screwdriver as a lever.
Exchange both fuses in the fuse holder for a working fuse of the correct value. Finally, replace the fuse
drawer in the fuse compartment and push the drawer shut.
Fuses which blow repeatedly indicate a serious fault and you should return the unit to your supplier for
repair.
THE HEATED LID OVER-TEMPERATURE CUT-OUT
The heated lid is fitted with an independent circuit to protect it from overheating. In the unlikely event
of an over-temperature problem with the lid, the unit is fitted with a thermal fuse which will remove
power to the heater plate should the maximum temperature be exceeded. If this fault occurs, contact
your local supplier for repair.
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.
INTERCHANGEABLE BLOCKS
The block can be removed and replaced by another of the same sort or of a different sort. The software
will register the change and set up the unit for the new block.
Remove the four screws on the underside of the unit and drop the block/fan assembly down. Unplug the
assembly from the wiring and remove the assembly from the unit. Refitting the block/fan assembly is the
reverse procedure; be careful of the wires as you refit the block.