VERDER CARBOLITE GERO SNF, Installation, Operation And Maintenance Instructions

Page: 32 / 42

7.0 Repairs and Replacements
7.4 Temperature Controller Replacement
Refer to the controller instructions for more information on how to replace the
temperature controller.
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
Disconnect the thermocouple to be replaced from its terminal block and withdraw it.
Re-assemble the new thermocouple, observing the colour coding.
Refit the element access panel.
7.6 Element Replacement
See section 7.2 - wearing a face mask is required.
Remove the top panel as above.
The heating chamber is suspended from the top plate. Make a note of the wiring
connections; identify those to the heating element and disconnect it.
Separate the inner chamber by removing 4 screws. The heating element with its
surrounding insulation can then be lifted out of the chamber.
Replace the element with the new one and reverse the disassembly procedure.
7.7 Fuse Replacement
Fuses are marked on the wiring diagram with type codes, e.g. F1, F2. For more
information on fuses refer to section 10.0.
Depending on model and voltage, the different fuse types may or may not be fitted.
If any fuse has failed, it is advisable for an electrician to check the internal circuits.
Replace any failed fuses with the correct type. For safety reasons do not fit larger
capacity fuses without first consulting Carbolite Gero.
The fuses are located at the cable entry point. Remove the back panel or control box
back panel to gain access to the fuses.
32