Henny Penny SCD-6/8 - Manual (Page 7)

Model SCD-6/8
2-9. RELAYS
1. Remove electrical power supplied to unit.
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 side panel closest to the controls.
To avoid electrical shock, make connections before apply-
ing power, take reading, and remove power before remov-
ing meter leads. The following checks are performed with
the wall circuit breaker closed and the main power switch
in the ON position.
3. With power reapplied, let unit start heating up, or enter
the Tech Mode in Special Program Mode and check the
relays in the output test. (See Special Programming Section of
the Operator’s Manual.)
4. With the heaters energized, 0 volts should show on the output
side of the relay, and 12 volts on the input side.
5. With the component not energized, 208 or 240 volts
should show on the output side of relay, and 0 volts on input.
6. If voltage varies from steps 4 and 5, 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
12 vdc. If this proves true, the relay is faulty.
203 2-7
Checkout: