F. Wheelchair has too little power to drive properly
Cause
Possible solution
Tyre pressure of drive wheels
or castors is too low
Check pressure and inflate if needed. See User
manual for correct value.
Programming of speed and
Torque Settings is not correct
Check programming and make corrections if
needed.
Programming of Motor Load
Compensation is not correct
Check programming and make corrections if
needed. Check with manufacturer for correct
value.
G. Wheelchair veers to one side
Cause
Possible solution
Programming of Load
Compensation is not correct.
Check programming and make corrections if
needed.
Motors are not "balanced"
Check motor rpm. See motor label for correct
value.
Tyre pressure or tyre size left
and right are different
Check tyre pressure and tyre size (diameter).
Suspension "hardness" left
and right are different.
Check suspensions and make sure left and right
side have identical suspension rates.
Carrier is not "in balance" due
to mechanical flaws
Check for loose bolts, cracked or worn frame
parts. Check height of carrier left and right.
User weight is not in the
center of the wheelchair
Check position of user, see if position can be
improved. If not possible use veer compensation
in program to correct the steering.
Chair stops intermittently
High Voltage due to overcharging or driving down
slopes with full batteries (regenerative braking).
Check battery voltage, drive down slope at lower
speed.
Worn carbon brushes
Check brushes, replace if needed.
Speed Limit due to micro
switch
Check functioning of micro- switch. Due to
vibrations or shocks it can temporarily switch to
Slowdown mode.
H. Castor wheels “wobble” at higher speed
Cause
Possible solution
Tyre pressure too high.
Check tyre pressure and decrease if needed. See
user manual for correct value.
Too little load on the castor
wheels.
Modify seating setup if possible or decrease tyre
pressure.
I. Motors make excessive noise
Cause
Possible solution
Worn carbon brushes
Check carbon brushes and collector. If needed
replace brushes or motor.
6 Troubleshooting
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