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SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
At’m and At’m QT 28 Part No. 1125078
ƽ WARNING
When performing STEPS 5 and 6, ensure feet are clear from casters and wall,
otherwise injury may result.
5. Sit in wheelchair and place feet against a wall, workbench or other stationary object.
6. Turn the power ON and carefully push the joystick forward, trying to drive the
wheelchair through the stationary object.
NOTE: This puts a heavy load on the batteries as they try to push through the stationary object. If
the wheels spin, have two individuals (one on each arm) apply as much downward pressure as
possible on the arms of the wheelchair.
7. Read the meter while the motors are straining, no longer than 3-4 seconds, to
determine the voltage under load.
NOTE: If the voltage drops more than two volts from a pair of fully charged batteries while under
load, they should be replaced regardless of the unloaded voltages.
FIGURE 3.1 Field Load Test
Charger
Port
Digital
Voltmeter
BATTERY
QUALITY
0 to 2 volts Good
2 to 2.5 volts Poor
2.5 or more Bad