Corrective Maintenance - Process Sensors MCT Series Installation And Operation Manual

Screen Message
High Signals
Low Signals
High Motor Speed
Low Motor Speed
Motor stopped
VCC Fault
VN Fault
VP Fault
SPI Fault
Dirty Window
High Temp

12.3 Corrective Maintenance

The MCT sensor and Operator Interface are modular in construction and an experienced electronic
maintenance technician can replace any damaged components.
The following components may be replaced in the field:
Replacement of these parts requires that the MCT be removed from its plant location and brought to a
clean room or maintenance shop.
Description
Too much signal
Too little signal
Motor rpm above 1200
Motor Speed below 1000
Wheel motion not detected
High/Low 5v power
High/Low –15v power
High/Low +15v power
No communication to OI
Window contamination
Internal Temp > 65ْ
Main Circuit Board
Lamp
Filter Wheel Motor
Detector
Power Supply
Dome Mirror
Corrective Action
Check for proper product placement
or no product
Check for proper product placement
or no product
Call PSC
Call PSC
Call PSC
Measure 5v with multimeter
Measure –15v with multimeter
Measure +15v with multimeter
Check cable to OI
Clean the window
Fit Cooling System
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