Carbolite CR Series - Manual (Page 10)

Clean Room Ovens
10 MF21 – 3.07
7.0 C IRCUIT D IAGRAMS
7.1 Single Phase
7.2 Three Phase with Neutral
note on 3-phase: depending on EMC filter, there may be 3 neutral wires from the elements to the
filter and terminal blocks
coil
Instrument Switch
temperature
controller
SSR
e
l
e
m
e
n
t
(s)
F1
F2
N
L
PE
Filter (if fitted)
thermocouple
circulation
fan
overtemp.
controller
thermocouple
relay or
contactor
only if overtemperature
control fitted
Instrument Switch
e
l
e
m
e
n
t
(s)
F1
F2
N
L1
PE
Filter (if fitted)
contactor
SSR
SSR
SSR
e
l
e
m
e
n
t
(s)
e
l
e
m
e
n
t
(s)
instrument and fan
circuit as above
L2
L3
if overtemperature
control fitted