Carbolite CFM Series - Manual (Page 14)

CFM
14
MF10 - 3.08
7.3 1400°C Model with Auxiliary Heater (earlier models)
7.4 Higher Voltages
For 254V (or above) an isolating transformer is fitted in the
control circuit after the F2 fuses.
Instrument Switch
coil
temperature
controller
overtemp.
controller
SSR
e
l
e
m
e
n
t
(s)
heat
on
F3
F1
F2
F3
N
L
PE
contactor
if o/temp fitted
thermocouple
thermocouple
auxiliary
controller
SSR
thermocouple
a
u
x
contactor
(o/temp)
Filter (if fitted)
safety
switch
F2
F2
transformer
Instrument Switch