Leica Biosystems TP1020 - Manual (Page 80)

80 Instructions for Use V 2.9 RevC, English – 12/2013
12. Maintenance
12.2.2 Reset after excess temperature shutdown
• Disconnect the wax bath connector plug from the socket at the rear of
the instrument.
• Wait for the wax bath to cool.
Operational test
• Plug the wax bath back in.
• Check whether the yellow pilot lamp lights when heating is activated.
• Wait until the paraffin is completely molten. The set standard working
temperature has been reached when the pilot lamp goes out.
• Measure if the actual temperature of the paraffin corresponds to the
standard working temperature.
If there is any doubt whether the wax bath is functioning trouble-free, it has
to be exchanged.
If the actual temperature rises above the range of normal work-
ing temperature, an excess temperature switch-off mechanism re-
sponds. The wax bath heating is disconnected. The yellow signal
lamp is extinguished. Use of the wax bath can be resumed only af-
ter a cooling down period. For cooling down, disconnect the wax
bath connector plug from the socket at the rear of the instrument, or
switch off the main switch.
Empty the wax baths completely before the paraffin cools!
When cooling down, the paraffin contracts, which can cause dam-
age to the wax bath.