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National Flooring Equipent 7700-10 Series Service Manual
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Contents
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Troubleshooting GuideProblem Cause SolutionMachine will not start. Seat safety switch is disengaged. Ensure operator is seated.Emergency stop (E-Stop) switch is disen-gaged.Twist E-Stop so that it is in the “POWER ON”position.Circuit breaker is in the “OFF” position. Verify circuit breaker is in “ON” position.48 volt blue plugs are not connected. Make sure that connection plugs are fullyinstalled.“Start” button did not fully engage. Firmly press down green start button.Wire harness is disconnected. Connect wire harness.Batteries are low. Charge batteries.Machine doesn’t run as long as it used to. Battery is not fully charging. Verify that battery is being properly charged.Verify that charger is working properly. Char-ger has a LED light to indicate.The 48 volt blue plugs are not connected. Check that connection plugs are fullyinstalled.Batteries no longer hold a charge. Call NFE for procedure.Motor fan cover plugged with dust or debris. Blow out fan cover after each job.Machine is making rattling noises. Loose hardware on machine. Inspect and tighten bolts as needed.Charger is hot. Charger is in use. This is normal.Fluid is leaking from machine. Hose connections/or fittings have loosenedthrough normal use.Tighten hydraulic hoses and fittings asneeded.Pin hole in the hoses. Replace affected hose.Oil and/or oil filter are old. Replace oil and oil filter yearly on machine.Tires/Wheel motors make a slight clickingnoise.Normal noise with proper operation.Machine is jerky or jumpy. New operator. Additional time is required to become familiarwith machine.Control levers are being moved too quickly. Operate control levers with wrist resting onknees for additional support or purchase armrest.Coupling leaks at thread or seat. Missing or damaged O-rings. Check for missing or damaged O-rings;replace if necessary.Damaged threads due to misalignment orimproper seat angle.Correct seat angle. Check for thread dam-age; replace if necessary.Over or under torquing. Only hand-tighten hardware.Any issues not listed above. Contact NFE to speak with a technician.9 |
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