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7.2 Testing the electro-mechanical parking brake
Note
This test should only be carried out on mobility aids with conventional motor/transmission units.
CAUTION!
• A short circuit in the electro-mechanical brake will destroy the brake output of the power
module. NEVER connect a short-circuited electro-mechanical brake to an intact power
module. All short-circuited brakes must be replaced!
Note
A defective motor can damage the power module, but a defective power module cannot camage
the motor.
Requirements:
•
• digital multimeter with resistance measurement
• Remove the rear cover as described in chapter 8.1.1.
• Pull the motor plug (1) out of the power module.
•
• Connect the digital multimeter to the adjacent central motor plug contacts (3) and measure the
resistance between the contacts.
• If there is a defect, replace the motor and send it to Invacare® Service for inspection or repair.
Note
A resistance of between 40 and 80 ohms indicates an intact brake.
A resistance of 0 ohms or a very high resistance (mega-ohms or infinity) indicates a short-circuit,
a bad connection or a defective brake.
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