Trouble Shooting Guide For Battery Powered Machines
The Drive Roller Turns Unengaged but W
on’t
Move the Load
Determine whether the issue is:
1.
TORQUE
(drive roller stops turning when engaged with the load) or
2.
GRIP or TRACTION
(drive roller spins against the load, not moving it).
1. TORQUE - The drive roller stops turning when it engages with the load
Check the unloaded speed of the motor and compare it to the minimum (see below). On battery
machines low speed can be an indicator of many problems and is a good initial test to perform to
get a baseline for further troubleshooting. Ensure you do this unloaded RPM test using a recharged
battery pack, as a depleted battery pack will give lower values. Below are the minimum RPM
(Revolutions-Per-Minute) or MPM (Meters-Per-Minute) values. If you do not have access to a hand-
held RPM meter, just count the number of seconds to complete 10 full revolutions:
MODEL
RPM
MPM (ft/min)
Seconds (
to complete 10 rev’s)
RVB-10
170
38.1 (125)
3.52 sec
RVB-15
113
25.4 (83)
5.31 sec
RVB-25
81
18.1 (60)
13.50 sec
If the speed of your model is less than the specified value or if the machine is showing a noticeable
lack of speed or power when moving a load then please progress through the following trouble-
shooting suggestions:
I.
Inspect the drive roller urethane to determine if it has delaminated, i.e. separated from
the drive roll core. This would give the impression the drive roll is not turning when in
fact the core is, but the polyurethane that was bonded to it has separated and become a
loose sleeve around the core. Look at the side of the machine to see if the drive roller
core is turning while the urethane surface is not.
II.
The battery pack is not providing enough amps, either worn out or not recharging
correctly. Run the machine with another battery pack if one is available to determine if
a faulty battery pack is the cause of the reduced performance. If another battery pack is
not available the suspect battery pack can be returned to PowerHandling for evaluation.
III.
The load being moved or lifted is too great for the capacity of your PowerRoll. Contact
PowerHandling to review your application. We can tell you if you are using your
PowerRoll beyond it design capabilities and offer a more suitable model (or substitute a
higher reduction / higher torque gearbox) to better suit your application.
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