Viking VUAR140 Troubleshooting Guide download pdf (Page 17)

COMPONENT TEST PROCEDURE METER READING

TIMER

(Continued) 1b. Mallory Timer: Touch the Mallory Timer - the meter should

meter probes to timer ter- read 6000 ohms to 9000 ohms.

minals PK and R (motor

windings).

The Defrost Mode

1. Set the ohmmeter to Rx1

scale and zero the meter.

2. Touch the meter probes The meter should read “ zero” resistance

to timer terminals PK and (contacts closed.) If it reads anything

BK (switch contacts.) else, replace the timer.

3. Touch the meter probes The meter should read “infinity” (con-

terminals BK and OR tacts open.) If it reads anything else,

(switch contacts.) replace the timer.

Cooling Mode

1. Use a screwdriver and

Manually advance the

Time 1/4 turn.

2. Touch the meter probes The meter should read “zero” resistance

to timer terminals BK (contacts closed.) If it reads anything

and OR (switch contacts.) else, replace the timer.

3. Touch the meter probe The meter should read “infinity” (con-

to timer terminals PK tacts open.) If it reads anything else

and BK (switch contacts.) replace the timer.

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Viking VUAR140 Troubleshooting Guide Page 17