Invacare TDX-SP Service Manual page 25

®
Invacare - TDX-SP / TDX-SP N
PROBLEM
Motor runs
but loses
power
Motors stop
and do not
start again
Motors lose
power
during
journey
Motor
judders or
runs
irregularly,
or only one
motor runs
OTHER POSSIBLE
SYMPTOMS CAUSE
None High motor
loading causes
electronic
module to
decrease
voltage
None High motor
loading causes
electronic
module to
decrease
voltage
None Fuse burnt out
None Motor defective
None Electronic
module
defective
None Bad connections Switch mobility aid
None Carbon brushes
worn
Clutch(es)
defective
Bearing
defective
Collector
defective
SOLUTION Documentation
Stop journey and
allow electronic to
cool down.
Leave mobility aid
switched on and
allow electronic
module to work.
Charge batteries
overnight with
mobility aid
switched on.
Check cabling and See chapters 8.2.7 and
replace fuse 8.2.5/8.2.6
Check carbon See chapter
brushes and 8.19.6/8.19.7.
replace if
necessary
Measure internal See chapters 7.1 and
resistance of 8.19.1/8.19.2
motor, replace
motor if defective.
Replacing the See chapter 8.6.2.
electronic module
See chapter 8.2.7.
off, wait 10
seconds, switch
mobility aid on
again. Check all
cabling.
Check carbon See chapter
brushes and 8.19.6/8.19.7.
replace if
necessary
Replace clutch See chapter
8.19.4/8.19.5.
Replacing the See chapter
motor 8.19.1/8.19.2.
Measure internal See chapters 7.1 and
resistance of 8.19.1/8.19.2
motor, replace
motor if defective.
SERVICE MANUAL
25