Techne TC-PLUS - Manual (Page 68)

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ADDITIONAL INFORMATION
USER MAINTENANCE
Before cleaning your unit, disconnect it from the power supply. The outer case of the TC-PLUS may
be cleaned with a cloth dipped in water or ethanol (hexane or 50% methanol can also be used). No
part of the case or cover should be immersed in the solvents. Do not use aggressive solvents such
as acetone or abrasive cleaners. The block may be wiped with water, ethanol or propan-2-ol and
may be decontaminated by wiping with 2% Neutracon or 1% bleach solution.
Before using any cleaning or decontamination method except those recommended here, the
responsible person should check with Techne that the proposed method will not damage the
equipment.
FAULT FINDING
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.
Should you have any problems with your TC-PLUS 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.
FUSES
If the display on the front panel is not 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 the faulty fuse 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.
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.