Invacare Storm 4 Series Service Manual page 23

Problem
Motors lose power
while driving
Motor judders or runs
irregularly, or only
one motor runs
Motors do not run
Motor makes clicking
noise
Scraping noise or
motor blocked
1533060-N
Other symptoms Possible cause
None
Bad connections
None
Carbon brushes worn
Bearing defective
Collector defective
None
Bad connections
Fuse burnt out
Batteries defective
Cabling to power
module or remote
defective
Power module
defective
Corroded contacts Water, salt or urine
has penetrated
None
Bearing defective
Collector defective
None
Bearing defective
Gearbox defective
Documentation
Solution
Switch mobility device See 6.9.15 Cables,
off, wait 10 seconds, page 68
switch mobility device
on again. Check all
cabling.
Check carbon brushes See
and replace if
necessary
Replacing motor See 6.6.1 Replacing
Motor-Gearbox
Unit, page 27 and
6.6.4 Replacing
Motor-Gearbox Unit
(Storm
30
Measure internal See 6.6.1 Replacing
resistance of motor, Motor-Gearbox
replace motor if Unit, page 27 and
defective 6.6.4 Replacing
Motor-Gearbox Unit
(Storm
30
Check all cabling See 6.9.15 Cables,
page 68
Check cabling and See 6.9.15 Cables,
replace fuse page 68 and 6.9.14
Main Fuse, page 67
Replace batteries See 6.10.4 Removing
Batteries, page 75
Check cabling See 6.9.15 Cables,
page 68
Replace power module See 6.9.2 Replacing
LiNX power module
bracket, page 60
or 6.9.3 Replacing
True Trac Plus power
module, page 60
Check cabling, replace See 6.9.15 Cables,
if necessary page 68
Replacing motor See6.6.1 Replacing
Motor-Gearbox Unit,
page 27
Measure internal See 6.6.1 Replacing
resistance of motor, Motor-Gearbox
replace motor if Unit, page 27 and
defective 6.6.4 Replacing
Motor-Gearbox Unit
(Storm
30.
Replacing motor See 6.6.1 Replacing
Motor-Gearbox Unit,
page 27
Replace gearbox See 6.6.4 Replacing
Motor-Gearbox Unit
(Storm
30 and
Service
4 X-plore), page
4 X-plore), page
4 X-plore), page
4 X-plore), page
23