CLARK FORKLIFT ET201 Troubleshooting the EV 1 Control TECHNICAL TRAINING MANUAL – PDF DOWNLOAD

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CLARK FORKLIFT ET201 Troubleshooting the EV 1 Control TECHNICAL TRAINING MANUAL – PDF DOWNLOAD

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CLARK FORKLIFT ET201 Troubleshooting the EV 1 Control TECHNICAL TRAINING MANUAL – PDF DOWNLOAD

• the electrical components. Knowledge of this control – how it works, and how it operates the other components – is vital to maintenance and service. This class is designed to teach you how the EV-1 SCA Control operates and how you can diagnose and troubleshoot problems with the control.
• The EV-1 SCA Control consists of a control card and the electrical components it operates. The card monitors power demands and responds by controlling the power applied to system components.
• The control operates a series of switching devices that enable it to direct the power load across different electrical circuits. These circuits control everything on the truck from the traction motors to forward and reverse drives and accessory devices.
• So your knowledge of the control system, the components it operates, and how to diagnose and troubleshoot control problems helps you to keep a truck in top shape and avoid down time.

Table Of Contents:

CLARK FORKLIFT ET201 Troubleshooting the EV 1 Control TECHNICAL TRAINING MANUAL – PDF DOWNLOAD

About this Class ……………………………………………………………………………. 1
Class Objectives ………………………………………………………………………. 1
Class Content …………………………………………………………………………… 1
Sequence of Operations …………………………………………………….. 1
Troubleshooting ………………………………………………………………… 2
Quiz ………………………………………………………………………………… 2
About Safety ………………………………………………………………………………… 3
Section 1. EV-1 Control Sequence of Operations ……………………………… 4
Identification of Abbreviations …………………………………………………. 4
Identification of Symbols ………………………………………………………… 5
Sequence 1. Drive Control …………………………………………………………. 6
Sequence 2. Connect the Battery ……………………………………………….. 8
Sequence 3. Battery Indicator and Pump Motor ………………………….. 10
Sequence 4. Hour Meter, Power Steering Operation, and S.R.O . …. 12
Sequence 5. Energizing the Directional Contactors …………………….. 14
Sequence 6. Contactor Closing and Capacitor Precharge ……………. 16
Sequence 7. #1 REC and #5 REC Turn On ……………………………….. 18
Sequence 8. 1 C Capacitor Charging and Reactor Operation ……….. 20
Sequence 9. #2 Rectifier Turn On and #1 Rectifier Turn Off …………. 22
Sequence 10. Flyback ……………………………………………………………… 24
Sequence 11. Accelerator Pot, Thermal Protector, and P.M.T ………. 26
Sequence 12. 1 A Contactor Operation ………………………………………. 28
Sequence 13. Field Weakening Operation …………………………………. 30
Sequence 14. Plugging ……………………………………………………………. 32
Sequence 15. Plugging (continued) …………………………………………… 34
Sequence 16. Ramp Start ………………………………………………………… 36
Section 2. EV-1 Control Troubleshooting ……………………………………….. 38
Symptom 1. Forward and reverse contacts will not close …………….. 39
Symptom 2. Reverse contacts will not close ……………………………… .40
Symptom 3. Forward contacts will not close ……………………………….. 41
Symptom 4. Contacts close, then drop out – drive motor will not
operate ………………………………………………………………………………….. 42

Please Note:

• This is the same manual used by the dealers to diagnose and troubleshoot your vehicle
• You will be directed to the download page as soon as the purchase is completed. The whole payment and downloading process will take anywhere between 2-5 minutes
• Need any other service / repair / parts manual, please feel free to contact [email protected] . We still have 50,000 manuals unlisted

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