Manitowoc Indigo Series - PTCR Operation Check

Part Number Preliminary 6/11 261
PTCR Operation Check
1. Visually inspect the PTCR. Check for signs of
physical damage.
NOTE: The PTCR case temperature may reach
210°F (100°C) while the compressor is running. This is
normal. Do not change a PTCR just because it is hot.
2. Wait at least 10 minutes for the PTCR to cool to
room temperature.
3. Remove the PTCR from the ice machine.
4. Measure the resistance of the PTCR as shown.
The resistance reading must be between:
• Two Terminal PTCR =18 to 40 ohms
• Three Terminal PTCR =
8 to 22 ohms.
Three Terminal PTCR
Measure Resistance At Ends
Two Terminal PTCR
Leave Jumper Wire Attached
Measure Resistance @ Center and End