Light Transformer, Double Line Break Relay - Thermador CM301B Service Manual

CM Oven Service Manual
LIGHT TRANSFORMER
Primary Terminals
Refer to Page 13 to access the light transformer.
To test the light transformer, perform the fol-
lowing steps.
1. Turn off the electrical power to the oven.
2. Set the ohmmeter to the R x 1 scale.
3. Disconnect one of the wires from the bot-
tom (primary) terminals.
4. Touch the test leads to the bottom termi-
nals. The meter should indicate less than
1 Ω.
5. Disconnect the wires from the top three
terminals.
6. Touch the test leads to the following num-
bered terminals. The meter should indi-
cate less than 1 Ω at each location:
a) Terminals 8 and 6
b) Terminals 8 & 10.
c) Terminals 6 and 10.
DOUBLE LINE BREAK RELAY
Secondary
Terminals
Refer to Page 13 to access the double line break
relay. To test the double line break relay, per-
form the following steps.
1.
2.
3.
4.
5.
6.
Page 50
Switch (N.O.)
Turn off the electrical power to the oven.
Set the ohmmeter to the R x 1 scale.
Disconnect the two yellow (solenoid) wires
from the relay.
Touch the test leads to the relay terminals.
The meter should indicate less than 1 Ω.
Disconnect the other two (switch) wires
from the relay.
Touch the test leads to the relay terminals.
The meter should indicate an open circuit
(infinite resistance).
Lit. No. 94-30-006B
Solenoid