SAWAFUJI ELECTRIC 0642 032 0310, Service Manual

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【Check 4】 Resistance of Thermistor. （Fig.4)
◇ Checking points
Remove the two pin couplers from temperature controller.
Measure resistance between thermistor coupler terminals.
Test result Judge
Approx. 2 kΩ - 10 kΩ Normal
∞Ω Broken
0Ω
Short Circuit
【Check 5】 Check the temperature controller.
(Fig.5)
◇Checking points
<Use power AC100-240V>
(Ambient temp 25℃)
Test result Judge
Approx. DC12-14V Normal
DC 0 V
12V less than
<Use power DC12V>
(Ambient temp 25℃)
Test result Judge
Approx. DC12V Normal
DC 0 V
11V less than
<Use power DC24V>
(Ambient temp 25℃)
Test result Judge
Approx. DC24V Normal
DC 0 V
23V less than
Check the voltage at between terminals ORANGE and
BLACK.
6. CHECK POINT
＆
CHECK METHOD
14
Temperature controller is broken
Temperature controller is broken
Temperature controller is broken
POWER SUPPLY
WORK TIPS
・When short circuit, motor runs continuously.
POWER SUPPLY
Fig.5
ORANGE
BLACK
Fig.4