HENNESSY INDUSTRIES COATS 950 Service Manual And Troubleshooting Manual
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HENNESSY INDUSTRIES COATS 950 Service Manual And Troubleshooting Manual

HENNESSY INDUSTRIES COATS 950 Service Manual And Troubleshooting Manual

Computer wheel balancers
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950/1025/1050/1055
950 ProRacer
Computer Wheel Balancers
P .O. Box 3002, 1601 J. P . Hennessy Drive, LaVergne, TN USA 37086 615/641-7533 800/688-6359
HENNESSY INDUSTRIES INC. Manufacturer of AMMCO
Service Manual and
Troubleshooting Guide
®
, COATS
®
and BADA
®
Automotive Service Equipment and Tools.
®
Manual Part:
Revision: 11/05
9111123 03

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  • Page 1 Computer Wheel Balancers Service Manual and Troubleshooting Guide 9111123 03 P .O. Box 3002, 1601 J. P . Hennessy Drive, LaVergne, TN USA 37086 615/641-7533 800/688-6359 Manual Part: HENNESSY INDUSTRIES INC. Manufacturer of AMMCO ® , COATS ® and BADA ®...
  • Page 2 Direct Drive ii • Service Manual — COATS Models 950/950 ProRacer/1025/1050/1055...

  • Page 3: Table Of Contents

    Contents Introduction ......1 Transformer .......22 Contactor .
  • Page 4 Safety IMPORTANT SAFETY INSTRUCTIONS READ ALL INSTRUCTIONS Eye and face protection recommendations: 10. Wear proper clothing. Safety toe, non-slip footwear and protective hair covering to contain “Protective eye and face equipment is required to hair is recommended. Do not wear jewelry, loose be used where there is a reasonable probability of clothing, neckties, or gloves when operating the injury that can be prevented by the use of such...

  • Page 5: Introduction

    Direct Drive Introduction Servicing This service manual contains the functional checks, Service should be performed only by COATS ® trained troubleshooting, adjustment, and part replacement and authorized service personnel. The troubleshooting instructions for COATS ® Models 950, 950 Pro Racer, and service procedures in this manual are arranged to 1025,1050 and 1055 Wheel Balancers.

  • Page 6: Voltage & Phase Checking Procedure

    Direct Drive Voltage & Phase Checking 4. Plug the balancer to a power source. Procedure 5. Use an Ohmmeter to check the resistance between the frame of the Balancer and the building 1. Unplug the Balancer from the power source. ground.

  • Page 7: Preliminary Inspection

    Direct Drive Preliminary Inspection 6. Install a 4 oz. weight on the outer rim of the test wheel. 1. Check the power supply to the balancer. See the 7. Choose the DYNAMIC balancing mode. procedure on page 6. 8. Lower the guard hood. 2.

  • Page 8: Rotational Check (Use A Hub Centric Wheel)

    Direct Drive 7. Check the placement of the distance tape, see the Calibration Procedures DISTANCE GAUGE TAPE PLACEMENT PROCEDURE. Weight Sensor Calibration 8. If specified results are not achieved see ACCU- 1. Turn the power switch ON. RACY PROBLEMS. 2. Mount the test wheel to the machine. Rotational Check (Use a Hub Centric Wheel) 3.

  • Page 9: Stop-On-Top Calibration (Code 20/21)

    Direct Drive 14.0). After these parameters have been entered, the Error Codes weight displays will show 0 and the machine returns to The following is a list of error codes. When the bal- normal operating mode. ancer is cycled several operating parameters are 5.

  • Page 10: Function Codes

    Direct Drive long. This can be caused by a bad contactor, motor con- *Function Codes trol board or a bad PCB. See WHEEL DOES NOT STOP . The following is a list of function codes with it’s Err 6 - Displayed when there is no power to the description.

  • Page 11: Troubleshooting Section For Models 950,1025,1050 & 1055 Balancers

    Hennessy Industries, Inc. 51 A & D Arm Adjustment - This code represents a hopes this manual will help you provide the best and subset of code 10 (A &...

  • Page 12: Fan Motor Does Not Run (Contactor Model)

    Direct Drive Fan Motor Does Not Run (Contactor Model) Is the power switch set Turn the power to the ON position? switch ON. Replace the circuit breaker, See the troubleshooting see Replacement Procedure. Does the display light? procedure, DISPLAY DOES NOT LIGHT. Unplug the machine and disconnect the fan motor lead from the circuit Has the 1A breaker for...

  • Page 13: Rotational Problems

    Direct Drive Rotational Problems (Contactor & Motor Controller Model) Fine balance test wheel Is the test wheel balanced and test again. to 0.00 +.02oz? Perform WEIGHT “SENSOR CALIBRA- Did the balancer pass the TION procedure or refer to “ACCURACY ACCURACY CHECK? PROBLEMS”...

  • Page 14: Repeatability Problems

    Direct Drive Repeatability Problems (Contactor & Motor Controller Model) Mark the wheel & faceplate with Clean the faceplate and/or remove all a piece of chalk and check after nicks. Make sure wheel is chucked each spin. Is the wheel slipping tightly against faceplate against the face plate? Is the hub nut broken or...

  • Page 15: Display Does Not Light (Contactro Model)

    Direct Drive Display Does Not Light (Contactor Model) Is the power switch set Turn the power to the ON position? switch ON. Is the proper voltage and ground Have the voltage supply present at the receptacle? See to the machine AC CheckingProcedure corrected.

  • Page 16: Balancer Does Not Cycle (Contactor Model)

    Direct Drive Balancer Does Not Cycle (Contactor Model) To use the following chart you will need a tire and wheel assembly mounted on the balancer, the hood closed, and the proper A, W, and D dimensions entered. If you are unable to manually enter the proper wheel dimensions, replace the touch panel.
  • Page 17 Direct Drive CAUTION Manually closing the contactor to check voltage may cause the CONTINUED FROM wheel to spin at high speeds.To avoid this from happening dis- LAST PAGE connect the wires going from the contactor to the motor. Is there 230VAC from terminals Repair or replace defective Is this a Model 1050.

  • Page 18: Balancer Does Not Brake (Contactor Model)

    Direct Drive Balancer Does Not Brake (Contactor Model) CAUTION Does the wheel rotate clockwise Manually closing the contactor to when the forward contactor is Reverse any two power leads check voltage may cause the wheel to engaged at power source and re-test. spin at high speeds.
  • Page 19 Direct Drive CAUTION Manually closing the contactor to check voltage may cause the wheel to spin at high speeds. To CONTINUED FROM avoid this from happening disconnect the wires LAST PAGE going from the contactor to the motor. Does the Balancer trip a circuit Check the bridge rectifiers.

  • Page 20: A & D Arm Problems

    Direct Drive A & D Arm Problems Return the arm to the “Home” position. The end of Power cycle the Has the arm returned all the arm should be resting machine, does the the way to the bushing? against the guide bushing. Balancer “Beep”...

  • Page 21: Checking Procedures *Bridge Rectifiers

    Direct Drive Checking Procedures *Optical Encoder (Code 44) 1. Press and hold the SHIFT key and press 0. Then *Bridge Rectifiers press 4 followed by 4. Rotate the wheel, the readings 1. Turn the power switch OFF and unplug the in the display window should change from 000 to 255.

  • Page 22: Motor Circuit Diagram

    Direct Drive *Motor Circuit Diagram WARNING Disconnect AC power before taking readings. To check the braking circuit, disconnect the rectifier The motor may be checked individually using the from the 83. Place your ohms leads across 53 and 83. motor wiring diagram above. The complete spin circuit may be checked by placing your ohm leads across Press and hold the brake contactor and check the read- L1&L2, L2&L3, L1&L3.

  • Page 23: Piezo Output

    Direct Drive *Piezo Output Note: Rust, corrosion, and trash under the piezo ball or between the piezo and the The piezo out-put test can be used to help diagnose chassie can cause a bad ground and make problems or failures with piezos on the 950/1050, 1025 the readings fluctuate.

  • Page 24: Replacement Procedures Section For Models 950,1025, 1050, & 1055 Balancers

    Direct Drive Replacement Procedures Section Front Panel/Printed Circuit Board Assembly Replacement for Models 950,1025, 1050, & 1. Unplug the balancer. 1055 Balancers 2. Check contactor coil resistances, see the proce- The procedures in this section will aid in replacing dure on page 24. major sub-assemblies of the balancer.

  • Page 25: Hood Magnet

    Direct Drive Hood Magnet On/Off Switch 1. Remove the rubber hood stop from the hood 1. Unplug the balancer. bracket on the chassis. 2. Remove weight tray and weight tray shield. 2. Lean the hood back as far as it will go. 3.

  • Page 26: Transformer

    Direct Drive Transformer Note: For ease of installation, the motor wires are numbered corresponding to the motor ter- 1. Unplug the balancer. minal numbers on the wiring diagram. 2. Remove weight tray and weight tray shield. 9. Install Power Panel. 3.

  • Page 27: A & D Arm Assembly

    Direct Drive A & D Arm Assembly Rotary Shutter Note:The Model 950 uses a manual Distance 1. Unplug the balancer. Gauge Assembly. The model 1050 uses an 2. Remove weight tray and weight tray shield. automatic Distance (A) and Diameter (D) Gauge Assembly.

  • Page 28: Drive Motor Assembly

    Direct Drive Drive Motor Assembly 19. Tighten the Nyloc nuts until the distance from the top of the motor cradle to top of the piezo spring Hennessy now has available a service motor kit for retainer is two (2) inches. the 950/1025/1050/1055 Contactor &...

  • Page 29: Capacitor Assembly

    Direct Drive 13. Install weight tray, weight tray shield and motor Signal Harness and plug in balancer. 1. Unplug the balancer. 14. Perform the FUNCTIONAL CHECKS. 2. Remove weight tray and weight tray shield. Capacitor Assembly 3. Remove Front panel /PCB Assembly. 1.

  • Page 30: Repair Procedures For The A & D Arm Assembly

    Direct Drive Repair Procedures for the A & D A Potentiometer Replacement 1. Remove the A pulley, see the procedure under Arm Assembly topic A PULLEY REMOVAL on page 34. A Pulley Removal 2. Unplug the three (3) wires form the A potentiome- 1.

  • Page 31: D Pulley Installation/Adjustment (Code 10)

    Direct Drive D Pulley Installation/Adjustment (Code 10) D Potentiometer Replacement 1. Completely back off the plunger stop pin. 1. Remove the D pulley, see the procedure under topic D PULLEY REMOVAL. 2. Locate the return spring onto the D pulley. Install the tension spring to the retaining pin on the pulley, 2.

  • Page 32: Motor Service Kit Instructions

    Direct Drive *Motor Service Kit Instructions Part No. Description 8112945 Motor Replacement Kit Hennessy now has available a service motor kit for the 950/1025/1050/1055 Contactor & Solid State CAUTION Balancers which will allow everyone to use one part number when ordering a motor. The kit will be a com- plete motor assembly, hardware bag, &...

  • Page 33: 950 Pro Racer Wiring Diagram

    Direct Drive *950 Pro Racer Wiring Diagram Service Manual — COATS Models 950/950 ProRacer/1025/1050/1055 • 29...

  • Page 34: 950 Wiring Diagram (Contactor Style)

    Direct Drive *950 Wiring Diagram (Contactor Style) 30 • Service Manual — COATS Models 950/950 ProRacer/1025/1050/1055...

  • Page 35: 1050 Wiring Diagram (Contactor Style)

    Direct Drive *1050 Wiring Diagram (Contactor Style) Service Manual — COATS Models 950/950 ProRacer/1025/1050/1055 • 31...

  • Page 36: Solid State Wiring Diagrams & Troubleshooting Guides

    Direct Drive *Solid State Wiring Diagrams & CAUTION Troubleshooting Guides *For units produced after 1/1/98. Please use caution when installing the hood A new Solid State Motor Controller replaced the bar into the machine being careful not to mechanical contactor and a second hood (Interlock) damage the switch lever with the actuating switch was added.

  • Page 37: Mechanical Hood Switch Diagram

    Direct Drive *Mechanical Hood Switch Diagram Service Manual — COATS Models 950/950 ProRacer/1025/1050/1055 • 33...

  • Page 38: 1050 Wiring Diagram (Motor Controller Style/Magnetic Switches)

    Direct Drive *1050 Wiring Diagram (Motor Controller Style/Magnetic Switches) 34 • Service Manual — COATS Models 950/950 ProRacer/1025/1050/1055...
  • Page 39 Direct Drive Service Manual — COATS Models 950/950 ProRacer/1025/1050/1055 • 35...

  • Page 40: 1050 Wiring Diagram (Motor Controller Style/Mechanical Switches)

    Direct Drive *1050 Wiring Diagram (Motor Controller Style/Mechanical Switches) 36 • Service Manual — COATS Models 950/950 ProRacer/1025/1050/1055...
  • Page 41 Direct Drive Service Manual — COATS Models 950/950 ProRacer/1025/1050/1055 • 37...

  • Page 42: Motor Controller Test Box #8112708

    Direct Drive *Motor Controller Test Box #8112708 Forward and In-Line "Control Signal" Reverse "Control" Detection Output CONTROL SIGNAL DETECT In-Line Signal Dectector SPIN STOP FORWARD Forward Indicator LEDs Control REVERSE Power Reverse Indicator Control Power MOTOR Switch CONTROLLER HENNESSY INDUSTRIES,INC. Solid State Solid State Solid State...

  • Page 43: Display Does Not Light (Solid State Motor Controller Model)

    Direct Drive *Display Does Not Light (Solid State Motor Controller Model) Is the power switch set Turn the power to the ON position? switch ON. Is the proper voltage and ground present at the receptacle? See Have the voltage supply to Checking Procedure.

  • Page 44: Balancer Does Not Cycle (Solid State Motor Controller Model)

    Direct Drive *Balancer Does Not Cycle (Solid State Motor Controller Model) To use the following chart you will need a tire and wheel assembly mounted on the balancer, the hood closed, and the proper A, W, and D dimensions entered. If you are unable to manually enter the proper wheel dimensions, replace the touch panel.

  • Page 45: Balancer Does Not Brake (Solid State Motor Controller Model)

    Direct Drive *Balancer Does Not Brake (Solid State Motor Controller Model) Balancer must spin and displaying infor mation to proceed. Does an error Does wheel Ye s message appear? attempt to stop? Ye s Cross reference error message to table and troubleshoot from the given location.

  • Page 46: Pcb Checklist Addendum

    Direct Drive PCB Checklist Addendum Hennessy has noticed a considerable increase in the amount of NAD’s (No Apparent Defect) for the 950/1050 PCB’s (8111886). Most NAD’s are in the “Chasing Weights” category. The next reason for PCB return is due to the Motor Controllers failing. Some of the PCB’s returned tested OK.

  • Page 47: Glossary Of Terms

    Direct Drive *Glossary Of Terms Accuracy Check - Also referred to as Plane Separation. When a weight is placed on one side (plane) of a wheel the opposite side (plane) should not change. Balancer Calibration - Also know as Weight Sensor Calibration.
  • Page 48 9111123 03 11/05 © Copyright 1992 Hennessy Industries and COATS All Rights Reserved Printed in USA...

This manual is also suitable for:

Coats 950 proracerCoats 1025Coats 1050Coats 1055

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