7.0 Repairs and Replacements
7.4
Solid-State Relay Replacement
Disconnect the product from the power supply and remove the
appropriate cover as given above.
Make a note of the wire connections to the solid state relay and disconnect them.
Remove the solid state relay from the base panel or aluminium plate.
Replace and reconnect the solid state relay ensuring that the bottom of it has good
thermal contact with the base panel or aluminium plate.
Replace the access panel.
7.5
Thermocouple Replacement
Disconnect the product from the power supply. Remove terminal cover to gain
access to the thermocouple connections. Make a note of the thermocouple
connections.
Thermocouple cable colour codings are:
Thermocouple leg
Colour
positive (type K)
green
negative
white
Undo any clips holding the thermocouple. Remove the air guide from the oven chamber.
Disconnect the thermocouple from its terminal block. Unscrew the compression fitting
inside the chamber and pull the thermocouple into the chamber. Cut through the
thermocouple behind the olive and remove the two parts. Loosely assemble
compression fitting with a new ferrule. Feed in new thermocouple through from the
back. Tighten the compression fitting. Refit the air guide. Bend the thermocouple to
match the shape of the previous part and refit any clips.
Refit the element access panel.
Compression fittings are only fitted to moisture extraction and stoving and curing
products. If fitted, ferrules need replacing.
7.6
Element Replacement
To find out whether the element failure was caused by a fault in the control circuit,
operate the oven at a low temperature and check that it is functioning correctly.
to replace the element, remove the rear panel and internal air guides. The element
terminals are accessed from the back.
Disconnect the wires from the element terminals. Ferrules in the compression fitting are
designed for single usage and need to be replaced with the element. Remove the
element by undoing the element fitting. Slightly withdraw the element. Cut through the
ferrules and the element. Remove the three parts of the element.
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