Invacare STORM Service Manual page 67

Checking Overall Voltage of the Batteries
• Check the overall voltage of the batteries with a multimeter
(range 50V / 25 DC) at the charging socket of the joystick box.
I I n n s s p p e e c c t t i i o o n n
• Voltage below 24 V?
• Voltage below 19 V?
• Voltage at zero?

NOTE:
• The internal battery has external contacts (2) with the 24 V-
supply of the wheelchair, as well as internal contacts (5) with
the serial connection with the external contacts of the external
battery.
• To measure the voltage, open the locking belt (9) and
remove the lid of the battery box (1).
Testing the individual voltage of the batteries
• For the removal of the batteries, see Disassembly, below.
• Measure the individual voltages of both batteries with a
multimeter (range 50V / 25V DC).
I I n n s s p p e e c c t t i i o o n n
• Voltage below 9,5 V?
• Voltage at zero?
Disassembly
• Grip lighting bar at its center and turn upwards.
• Hold battery boxes one after the other by the locking belt (9),
support with your other hand, and pull backwards from the
battery frame.
• Loosen the locking belt (9) and take off the lid (1).
• Loosen the screwings (first the negative pole) of the pole
binders (6 and 7) and detach binders with fuse plus the
lid from the battery and the box.
• Loosen the nuts and washers at the external (2) and internal
contacts (5) inside the lid (1), and detach the cable harness
completely from the lid (1).
• Lift battery (8) from the box with the aid of the locking belt (9).
• Pull the locking belt (9) out of the box.
Assembly
• Follow the steps in reverse order.
R R e e m m e e d d y y
> Charge batteries (see chapter 12.2).
> Check individual voltage of each battery.
> Check individual voltage of each battery.
R R e e m m e e d d y y
> Precharge batteries (see chapter 12.2).
> Check master fuse (50A) of the battery
plus internal cables and replace,
if necessary, or replace battery
+
V
–
Battery, inside
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1 Battery-box lid
2 External contacts of the cable harness.
3 Connection diagram for the batteries
4 Cable harness, complete
5 Internal contacts of the cable harness.
6 Terminal (+) and master fuse
7 Terminal (-)
8 Battery
9 Locking belt
10 Guide pins
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Charging Socket
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Battery Boxes
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