Troubleshooting Guide
19
401836_7700_RevK
Problem
Cause
Solution
Machine 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 fully
installed.
“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 charged properly.
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 fully
installed.
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 loosened
through normal use.
Tighten hydraulic hoses and fittings as
needed.
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 clicking
noise.
Normal noise with proper operation.
Machine is jerky or jumpy.
New operator.
Additional time is required to become familiar
with machine.
Control levers are being moved too quickly.
Operate control levers with wrist resting on
knees for additional support or purchase arm
rest.
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 or
improper 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.
