Invacare Storm4 Series Service Manual page 31

®
Invacare - STORM
PROBLEM
Motors stop
and start
again
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
4 ®
Series
OTHER POSSIBLE
SYMPTOMS CAUSE
None Voltage decline
None High motor load
allows the power
module to lower
the voltage.
None High motor load
allows the power
module to lower
the voltage.
None Fuse burnt out
None Motor defective
None Power module
defective
None Bad connections Switch mobility aid
None Carbon brushes
worn
Bearing
defective
Collector
defective
SOLUTION Documentation
Stop journey and
allow electronics to
cool down.
Stop journey and
allow electronics to
cool down.
Leave mobility aid
switched on and
let the power
module operate.
Charge batteries
overnight with
mobility aid
switched on.
Check cabling and See chapters 8.6 and 8.5
replace fuse
Check carbon See chapter 8.11.4.
brushes and
replace if
necessary
Measure internal See chapters 7.1 and
resistance of 8.11.1 or 8.12.1.
motor, replace
motor if defective.
Replace power See chapter 8.2.2. or
module 8.2.3
See chapter 8.6.
off, wait 10
seconds, switch
mobility aid on
again. Check all
cabling.
Check carbon See chapter 8.11.4.
brushes and
replace if
necessary
Replacing the See chapter 8.11.1. or
motor 8.12.1.
Measure internal See chapters 7.1 and
resistance of 8.11.1 or 8.12.1.
motor, replace
motor if defective.
SERVICE MANUAL
31