Invacare Storm4 Service Manual page 17

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
Transmission makes
clicking noise
1533060-M
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
Transmission defective
None
Transmission defective
Drive wheel loose
Documentation
Solution
Switch mobility device See 6.9.19 Cables, page
off, wait 10 seconds, 48
switch mobility device
on again. Check all
cabling.
Check carbon brushes See
and replace if
necessary
Replacing motor See 6.6.1 Replacing
drive unit, page 22 and
6.6.3 Replacing drive
unit (Storm4 X-plore),
page 23
Measure internal See 6.6.1 Replacing
resistance of motor, drive unit, page 22 and
replace motor if 6.6.3 Replacing drive
defective unit (Storm4 X-plore),
page 23
Check all cabling See 6.9.19 Cables, page
48
Check cabling and See 6.9.19 Cables,
replace fuse page 48 and 6.9.18
Main fuse, page 47
Replace batteries See 6.9.15 Removing
batteries, page 46
Check cabling See 6.9.19 Cables, page
48
Replace power module See 6.9.2 Replacing
LiNX power module
bracket, page 42
or 6.9.3 Replacing
True Trac Plus power
module, page 42
Check cabling, replace See 6.9.19 Cables, page
if necessary 48
Replacing motor See6.6.1 Replacing
drive unit, page 22
Measure internal See 6.6.1 Replacing
resistance of motor, drive unit, page 22 and
replace motor if 6.6.3 Replacing drive
defective unit (Storm4 X-plore),
page 23.
Replacing motor See 6.6.1 Replacing
drive unit, page 22
Replace transmission See 6.6.3 Replacing
drive unit (Storm4
X-plore), page 23 and
Replace transmission See 6.6.1 Replacing
drive unit, page 22 and
6.6.3 Replacing drive
unit (Storm4 X-plore),
page 23
Tighten drive wheel, See 6.7.2 Replacing
secure bolts with drive wheel, page 34
thread locking
adhesive, if necessary
Service
17