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1-8. RELAYS
203
1. Disconnect the electrical supply to the cabinet.
To avoid electrical shock or property damage,
move the POWER switch to OFF and disconnect
main circuit breaker, or unplug cord at wall
receptacle.
2. Remove the two screws on the front of the control
panel and pull control panel out.
Checkout:
3. With no power going to the relay, 120 volts should
show on the output side of the relay, and 0 volts on
the input.
To avoid electrical shock, make connections before
applying power, take reading, and remove power
before removing meter leads. The following
checks are performed with the wall circuit breaker
closed and the POWER switch in the ON position.
4. With the component energized, 0 volts should show
on the output side of the relay, and 5 volts on the
input side.
5. If voltage varies from steps 3 and 4, remove power to
unit, pull input wires from relay and place leads of
meter onto input wires. Reapply power to unit.
When unit is running, the input wires to relay should
show 5 vdc. If this proves true, the relay is faulty.
Model CF-941
1-5
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