30
11. Troubleshooting
Fault
Check
Cause
Solution
Blades, spreader arms
move slowly or jerkily
when operated
Battery fully
charged?
Battery week
Charge battery
Battery defective
Replace battery
Air in the hydraulic
system
Repair by an
authorized dealer,
by personnel
specially trained by
HURST,
or by HURST itself
Blades, spreader arms
do not move when
operated
Battery fully
charged?
Battery week
Charge battery
Battery defective
Replace battery
Device doesn’t
perform at its given
power
Device defective
Repair by an
authorized dealer,
by personnel
specially trained
by HURST, or by
HURST itself
Following release, the
star grip does not
return to the central
position
Casing damaged
or star grip
operation
not working
smoothly?
Damage to the
torsion spring for
reset
Repair by an
authorized dealer,
by personnel
specially trained
by HURST, or by
HURST itself
Soiled valve or star
grip
Defective valve
Other mechanical
damage (e.g. star
grip)
Hydraulic
À
uid leaking
from the piston rod
Defective rod seal
Repair by an
authorized dealer,
by personnel
specially trained
by HURST, or by
HURST itself
Damage to the
piston