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14. Restore chiller to normal operation, calibrate motor amps.
Solid-State Starters
Troubleshooting guides and information pertaining to the operation of the solid-state starter
may be found in Figure 46, Figure 47, Figure 48, Figure 49, Figure 50, Figure 51, Figure 52,
Table 12, and Table 13.
Attempt to solve the problem by using the following preliminary checks before consulting the
troubleshooting tables.
When the power is off:
• Inspect for physical damage and signs of arcing, overheating, etc.
• Is the wiring to the starter correct?
• Are all connections in the starter tight?
• Is the current feedback resistor properly adjusted and installed?
• Is a heater coil installed in each leg of the motor?
• Is the control transformer fuse blown?
• Is the motor connected to the starter?
Testing Silicon Control Rectifiers in Benshaw, Inc. Solid-State Starters
If a silicon control rectifier (SCR) is suspected of being defective, use the following procedure
as part of a general troubleshooting guide.