HENNESSY INDUSTRIES COATS 1025

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Summary

Essential Safety Guidelines for Balancer Servicing

General Servicing and Equipment Requirements

Voltage and Phase Checking Procedure

Functional Checks for Wheel Balancers

Operational Check

Procedure to verify the balancer's basic functions after power-up.

Accuracy Check (Plane Separation)

Procedure to test the balancer's accuracy in measuring weight on different planes.

Rotational Check Using Hub Centric Wheel

Verifies balancer or wheel mounting integrity by rotating the wheel.

Balancer Calibration Procedures

Weight Sensor Calibration

Calibrates the weight sensor for accurate readings using a test wheel and weight.

A & D Arm Calibration (Code 10)

Calibrates the A & D arm for accurate distance and diameter measurements.

Stop-On-Top Calibration (Code 20;21)

Understanding Balancer Error Codes

Operating Function Codes

Troubleshooting for COATS Balancer Models

Fan Motor Not Running (Contactor Model)

Troubleshooting steps for a fan motor that fails to operate.

Accuracy Problems (Plane Separation)

Diagnosing issues with weight readings on different planes.

Rotational Problems (Contactor & Motor Controller)

Troubleshooting steps for problems related to wheel rotation and balancing.

Repeatability Problems (Contactor & Motor Controller)

Diagnosing issues where readings are inconsistent between spins.

Display Not Lighting (Contactor Model)

Troubleshooting steps when the balancer's display fails to illuminate.

Balancer Not Cycling (Contactor Model)

Diagnosing why the balancer does not start its balancing cycle.

Balancer Not Braking (Contactor Model)

Troubleshooting steps when the balancer fails to stop the wheel properly.

A & D Arm Problems

Diagnosing issues related to the A & D arm measurements and function.

Component Checking Procedures

Optical Encoder Check (Code 44)

Motor Circuit Testing

Piezo Output Testing Procedure

Replacement Procedures for Balancer Assemblies

Drive Motor and Piezo Assembly Replacement

Drive Motor Assembly Replacement

Procedure for replacing the drive motor assembly.

A & D Arm Component Repair Procedures

950 Pro Racer Wiring Diagram

950 Wiring Diagram (Contactor Style)

1050 Wiring Diagram (Contactor Style)

Solid State Balancer Wiring and Troubleshooting

1050 Wiring Diagram (Motor Controller Style;Magnetic Switches)

1050 Wiring Diagram (Motor Controller Style;Mechanical Switches)

Troubleshooting Display Issues (Solid State Models)

Troubleshooting Cycle Issues (Solid State Models)

Troubleshooting Braking Issues (Solid State Models)

PCB Diagnostic Checklist

Diode Test on PCB

Procedure to test diodes on the PCB for shorts.

IC Test on PCB

Procedure to test ICs on the PCB for ground shorts.