Spectrum Controls 140 EHC 204 00sc - Manual (Page 58)

Counter / Flow Meter Input Module
59
5
Chapter
Maintenance and Diagnostics
This chapter describes maintenance and diagnostics for the Quantum counter module. Provided information
includes:
•
Safety considerations during maintenance
•
Preventive maintenance
•
Internal diagnostics
•
Startup testing
•
Troubleshooting
•
Module errors
Safety Considerations
Safety considerations are an important element of proper maintenance and diagnostic procedures. Actively
thinking about the safety of yourself and others, as well as the condition of your equipment, is of primary
importance. The following sections describe several safety concerns you should be aware of when
troubleshooting your control system.
ATTENTION Never reach into a machine to activate a switch, because unexpected motion
can occur and cause injury. Remove all electrical power at the main power disconnect switches before
checking electrical connections or inputs causing machine motion.
Indicator Lights
When the ready (module status) LED on the module is illuminated, it indicates that power is applied to the
module.
Activating Devices
When servicing the module, never reach into the machine to activate a device. Unexpected machine motion
can occur.