SECTION
Motor/Gearbox/Brake
SYMPTOM | PROBABLE CAUSE | SOLUTIONS |
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Erratic perfor- | Low tire pressure. | Inflate tires to the proper tire pressure. |
mance of wheel- |
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chair (driving uphill, |
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increase in braking |
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distance). |
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Wheelchair will not | Low tire pressure. | Inflate tires to the proper tire pressure. |
drive. |
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| Motor engagement handles are dis- | Engage motor engagement handles. |
| engaged. |
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| Batteries require charging. | Charge batteries. Make sure the setting on the |
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| charger is correct. |
| Charger plugged in. | Unplug charger from wall outlet before operating |
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| the wheelchair. |
| Circuit breaker tripped. | Press the reset button. Refer to Resetting the Cir- |
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| cuit Breaker on page 54. |
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Motors stall and | Current rollback. | Stop driving and let electronics cool. |
start up again. |
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Motor “chatters” | Electrical malfunction. | Contact Invacare. |
or runs irregularly. |
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Only one drive | Electrical malfunction. | Contact Invacare for service. |
wheel turns. |
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| One motor is disengaged. | Engage motor engagement handle. |
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Joystick erratic or | Electrical malfunction. | Contact Invacare for service. |
does not respond |
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as desired. | Controller programmed improperly. | Reprogram controller (Refer to electronics man- |
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| ual supplied with wheelchair). |
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Wheelchair does | Poor battery terminal connection. | Have terminals cleaned. |
not respond to |
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commands. |
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Power indicator off | Electrical malfunction. | Contact Invacare for service. |
- even after |
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recharging. |
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At’m and At’m QT | 22 | Part No. 1125078 |
