Snorkel TB50 CE 11-05 - Manual (Page 62)

Chapter 11 – Troubleshooting
58 TB42/TB50 – 0075251EE
Symptom
Lower controls do not work.
Upper controls do not work.
Boom functions do not work.
Boom and drive functions seem
sluggish.
Boom jerks while it is extended.
Boom extend, platform rotate, and
platform level functions do not work
from the upper controls.
Possible Cause
Battery disconnect switch turned off.
Emergency stop switch at lower con-
trols is pushed in to the off position.
Control selector switch is in the plat-
form position.
Ground operation switch not held in
the on position.
Platform overload sensor is tripped.
The horn is sounding and red over-
load light is blinking.
Platform overload sensor is in error
mode. The horn is sounding and red
overload light is constantly on.
Battery disconnect switch turned off.
Emergency stop switch at lower and
upper controls is in the off position.
Control selector switch at lower con-
trols is in the lower control position.
Platform foot switch not engaged.
Platform overload sensor is tripped.
The horn is sounding and red over-
load light is blinking.
Platform overload sensor is in error
mode. The horn is sounding and red
overload light is constantly on.
The drive/boom switch is in the drive
position.
Hydraulic oil is cold and thick.
Wire ropes are loose.
Boom speed knob set too slow.
Corrective Action
Place switch in the on position.
Pull the emergency stop button out
to the on position.
Place the switch in the lower control
position.
Hold the ground operation switch in
the on position while operating the
control toggle switches.
Remove weight from the platform un-
til the load is at or below rated ca-
pacity.
Remove weight from the platform un-
til the load is at or below rated ca-
pacity. Cycle machine power off, then
on. If alarm continues, system may
need recalibration.
Place switch in the on position.
Place the emergency stop in the on
position.
Place switch in the upper control po-
sition.
Step down on platform foot switch
while operating controls.
Remove weight from the platform un-
til the load is at or below rated ca-
pacity.
Remove weight from the platform un-
til the load is at or below rated ca-
pacity. Cycle machine power off, then
on. If alarm continues, system may
need recalibration.
Place the switch in the boom posi-
tion.
Use cold weather hydraulic oil as rec-
ommended for weather conditions.
Warm oil before operating the ma-
chine.
Refer the problem to a qualified ser-
vice technician.
Turn knob toward fast.