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Service Manual 32 – Contour 3 Series, Profiler & Advance – Approved Issue 5 Printed 2/13/2014 11:50:17 AM
74
Cooler Operation
(cont.)
ServoSeal and Drain Valve Operation
(cont.)
If power is present at the motor terminal:
•
Check the ServoSeal / drain valve motor winding resistance
(12.5 kOhm @ 200C.) on both motor windings (
ACTIVE
to
NEUTRAL
). Refer to
diagram below and circuit on
page 57.
Replace faulty ServoSeal / drain valve motor.
OFF
10 A
V
COM
1000V- - -
750V
V
kOHMS
Multimeter
FUSED
12.5
(a)
(b)
MOTOR-ACTIVE
MOTOR-ACTIVE
MOTOR-NEUTRAL
•
If ServoSeal / drain valve motor does not operate:
•
Remove motor from gear linkage mechanism and re test.
•
Replace motor resistor / capacitor (RC) with same at terminal block, and re-test.
If motor operates:
•
Check linkages are free moving and not jammed.
•
Check gear linkage mechanism is not jammed.
•
Replace gear linkage mechanism.