Replacing The Main Fuse - Invacare Tornado Service Manual

Tornado
6.4

Replacing the main fuse

If the main fuse is burnt out, then this almost certainly indicates a short-circuit in the battery cables.
If the cause is not a battery cable, then there may be a short circuit inside the power module. This
is very unlikely, but can occur under extreme conditions, such as when the wheelchair has been
cleaned using a high-pressure cleaning device. Needless to say, using such a device against
Invacare's strong recommendation not to (in the User Manual) will void the warranty.
CAUTION! Danger of fire!
• Only ever use a fuse with the correct value: ACS System: 50 A, Shark: 40 A!
• If the main fuse is burnt out, then the cause must be fixed before inserting a new fuse!
Requirements:
•
Combination wrench 8mm
•
Spare fuse
•
Large flat-bladed screwdriver
•
Use the flat-bladed screwdriver to carefully
pry the rear plastic cover off, as shown in
the picture.
•
Open the lid of the fuse compartment (1).
•
If the main fuse is burnt out, then first
determine what caused this. Only when the
problem has been fixed may the fuse be
replaced
•
Check the battery cables (2) in their entirety
for damage. If damaged, replace them.
•
If the battery cables are not damaged, then
the cause may be a short-circuit inside the
power module (3) (partially hidden by cables
in the picture). This is not necessarily visible
from the outside. In this case exchange the
power module for another one to determine
whether this is the cause.
•
Loosen and remove the nuts that hold the
fuse with the 8mm combination wrench.
•
Insert a new fuse, re-position the nuts and
tighten.
•
Close the lid of the fuse compartment.
Page 34
Service Manual
As at:19.03.2004