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Related Manuals for Lofa EP250
Summary of Contents for Lofa EP250
- Page 1 EP250 Panel Operation ™ and Troubleshooting 463-3000-01 24-May-13 © 2006-2013 LOFA Industries, Inc. All rights reserved. LOFA, the LOFA logo, CANplus and EP250 are trademarks of LOFA Industries, Inc. All rights reserved. Windows is a registered trademark of Microsoft Corporation.
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Page 2: Safety Symbols
LOFA Industries, Inc. warranty policies. LOFA Industries, Inc. has provided this document as a reference. We try to keep this document updated with the latest information regarding your LOFA product. However, changes do occur and LOFA reserves the right to make changes to the design of the LOFA products and supporting documentation without notice. -
Page 3: Typical Operation
EP250 Panel Operation and Troubleshooting AUTO- Start DISCLAIMER This panel/machine may be equipped with an automatic engine start-up system that could result in the automatic starting and stopping of the engine/ machine at any time. As such: The engine may start without warning or notice. - Page 4 LOFA’s powerful First Fault Diagnostics (FFD). After pinpointing the initial failure, FFD stores it in memory and alerts the end user via a single bright LED. FFD monitors battery charge, low oil pressure, high temperature, over speed and up to three additional contact closure inputs.
- Page 5 EP250 Panel Operation and Troubleshooting Warning! When replacement parts are required, LOFA Industries recommends using replacement parts supplied by LOFA or parts with equivalent specifications. Failure to heed this warning can lead to premature failure, product damage, personal injury or death.
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Page 6: Operation
EP250 Panel Operation and Troubleshooting Operation Turning the panel key to the run position starts a self-test which causes all LEDs to illuminate once, activates the alarm output for one second and enables the fuel run/stop solenoid output. After self-test, the LEDs indicate the state of the inputs they monitor. - Page 7 EP250 Panel Operation and Troubleshooting To prevent unintentional engine shutdowns caused by intermittent conditions (i.e., pressure spikes, coolant movement) the panel requires a constant 1 second fault input to cause engine shutdown. Warning! When used in combination with mechanical float type switches engine vibrations may prevent constant contact closure.
- Page 8 Warning! Low oil pressure is not an indication of low oil level. For best possible protection LOFA recommends using our solid-state oil level shutdown switch. Note Most shutdown switches are grounded through the switch body.
- Page 9 EP250 Panel Operation and Troubleshooting shutdown input to ground can cause fault indications. The panel can be configured for auxiliary 1 failure to indicate only. A blinking AUX 1 LED indicates SW input failure. The panel typically senses failure using a ground contact switch.
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Page 10: Oil Pressure Gauge
EP250 Panel Operation and Troubleshooting Gauges Voltmeter The voltmeter is connected to the fuel run/stop solenoid output. If the voltmeter does not indicate in the run position, this indicates a problem with the solenoid circuit. A battery voltage reading of approximately 14 volts on a 12 volt system (28 volts on a 24 volt system) while the engine is running indicates the battery is charging properly. - Page 11 EP250 Panel Operation and Troubleshooting temperatures. If the gauge is not connected to the sender, the will be on read the minimum reading. A defective sender or shorting the gauge input to ground will cause the gauge to read full scale (pegged).
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Page 12: Harness Routing
These chemicals may cause seal damage and allow water entry. Use LOFA provided cavity plugs to seal the connector if wires are removed. Unsealed Connectors For unsealed connectors exposed to the elements, LOFA recommends using dielectric grease to protect contacts. Warning! LOFA does not recommend using sealant with unsealed connectors. -
Page 13: Voltage Drop
A reliable ground must be provided for the panel. LOFA recommends the ground connection be made directly to the battery negative. Grounding through frame members is not recommended. All ground paths must be capable of carrying any likely fault currents. - Page 14 Note LOFA harness assemblies typically include all required engine control suppression devices. Added equipment will require additional protection. 463-3000-01 24-May-13...
- Page 15 EP250 Panel Operation and Troubleshooting Welding on Equipment with Electronic Controls Proper welding procedures are required to avoid damage to electronic controls, sensors, and associated components. The component should be removed for welding if possible. The following procedure must be followed if the component must be welded while installed on equipment with electronic controls.
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Page 16: General Troubleshooting
EP250 Panel Operation and Troubleshooting General Troubleshooting For additional information, refer to engine manufacturer troubleshooting guide. No response from starter motor Possible Cause Possible Remedy No battery voltage to starter Verify wiring and battery connection (power and ground) Battery discharged... - Page 17 EP250 Panel Operation and Troubleshooting Alternator not charging battery Possible Cause Possible Remedy Broken or slipping alternator Adjust or replace alternator drive belt drive belt Alternator not excited Verify excitation circuit connected, replace faulty regulator, add additional excitation resistor Alternator output not...
- Page 18 EP250 Panel Operation and Troubleshooting Preheat Troubleshooting Engine is hard to start in cold conditions Possible Cause Possible Remedy Start attempt before preheat Wait for preheat time to elapse, crank as soon as time elapses complete Incorrect preheat specification Correct panel configuration, install correct panel...
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Page 19: Document Revision History
EP250 Panel Operation and Troubleshooting Testing Shutdown Inputs Shutdown switches signal a fault by ground contact in most systems. Shutdown operation can be verified by grounding the shutdown inputs individually. It may be necessary to remove the wire from the shutdown switch to perform this test. -
Page 20: Typical Schematics
Typical Schematics The following pages show typical schematics. Details vary from installation to installation. See the specific schematics for installation for details. -
Page 25: Software License Agreement
LOFA does not represent or warrant that the Materials will meet any or all of Licensee’s particular requirements, that the operation of the Materials will be error-free or uninterrupted, or that all programming errors in the Licensed Product can be found in order to be corrected. - Page 26 Software License Agreement Limits on Scope of Indemnity. LOFA will have no liability for any infringement arising from (i) the use of the Licensed Product other than as set forth in its accompanying documentation or specifications; (ii) the modification of the Licensed Product; or (iii) the combination or use of the Licensed Product with other software, hardware, items or processes to the extent such infringement is not foreseeable use of the Licensed Product.
- Page 27 Special License Terms THE LICENSE GRANTED HEREUNDER IS RESTRICTED SOLELY TO THE OPERATION OF THE LOFA HARDWARE AND FOR NO OTHER PURPOSE. NO SUCH LICENSEE DEVICE INCORPORATING ANY OF THE MATERIALS MAY BE DISTRIBUTED, LICENSED, SOLD, RENTED, OR OTHERWISE PROVIDED TO THIRD PARTIES WITHOUT LOFA’S EXPRESS WRITTEN PERMISSION.
- Page 28 MANUFACTURER OF QUALITY ENGINE COMPONENTS 250 Hembree Park Suite Roswell GA Drive 30076 770-569- 770-569- PHONE www.LOFA.net 463-3000-01 Rev D. 12-Jun-2013 9828 9829...