Carbolite CAF 16/38 - Manual (Page 10)

CAF16
10
MF45 – 1.05
5.5 Thermocouple Replacement
Disconnect the furnace from the supply, and remove the thermocouple cover fixed to the back
panel.
Make a note of the thermocouple connections. The negative leg of the thermocouple is marked
blue. Compensating cable colour codings are:
negative positive (type R)
white orange
Disconnect the thermocouple from its terminal block; retain any porcelain spacers.
Withdraw the thermocouple from its sheath and remove any broken bits of thermocouple.
Re-assemble with a new thermocouple observing the colour coding.
5.6 Element Fitting and Replacement
Disconnect the furnace from the electrical supply.
Remove the complete front panel. Remove the thermocouple cover and the square plate from the
back panel.
The elements are expensive and fragile, and can be damaged by contamination: handle them with
care and keep them clean.
Replacements only: make a note of the actual braid and cable connections to the elements.
Disconnect the clips with the special tool provided (or with finger pressure, depending on the type
of clips supplied), lift off the braids and carefully withdraw each element. See fig. 5.
Carefully insert the new elements into the furnace.
Attach the connection braids according to the note made above or to the appropriate diagram,
fig. 6. Use the special tool (or finger pressure) to fit the clips. Take care that adjacent clips do not
touch each other.
Replace the furnace end panels and connect the furnace to the supply.
5.7 Fuse Replacement
Fuses are marked on the circuit diagram (section 7.0) with type codes, e.g. F1, F2. A list of the
correct fuses is given in section 8.1. 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.
The fuses are near the cable entry point, and access is by removal of a panel.