Invacare
®
Electra Service Manual
Page 32 As at:15.04.02
Test the individual voltage U on the batteries that have been taken out by means of a Multimeter (measuring
range 50 V / 25 V DC (see chapter 10.1 page: 26).
Test Fault Remedy
• Voltage under
12V?
Þ Battery not
completely charged.
Þ Charge the battery with
an Invacare
®
charger.
• Voltage under
9.5V?
Þ Battery fully
discharged.
Þ Pre-charge battery.
See chapter 12.1
page:35.
• Voltage under 0V? Þ Check fuses.
The fuse is located
in the battery cable
bridges. (Chapter
10.1.5 page: 27)
Þ "Ah Batter"
Check master fuse (50
A) of battery and cable /
connections, replace if
necessary, replace
battery if necessary
Check individual voltage
• Different voltage
(tolerance ± 0.2 V)
at each battery?
Þ batteries defective Þ Replace batteries
11.2 Check drive motor
11.2.1 Motor coil continuity
• Remove drive unit panelling (see chapter 9.3 page: 19).
• Remove the drive unit connecting plug at the controller (3).
• Set the Multimeter to continuity check or resistance measuring.
• Measure the continuity or resistance (R
req
= 0 Ω) of the motor circuit
between the red and black cable on the motor plug.
Drive unit connector
plug
Test results: Chapter:
No continuity in motor
circuit
(R = ∞ Ω).
• Broken cable in motor.
• Carbon brushes worn
out.
Þ Replace drive unit.
Þ Check / replace
carbon brushes.
Chapter: 9.6.5 page: 24
Chapter: 9.6.4 page: 24