Check And Repair Work On Actuators; General; Checking Actuators - Invacare STORM Service Manual

14.0 Check and Repair Work on the Actuators

14.1 General

In the STORM Standard and Comfort qualities, the actuator motors
are activated by the ACS via an actuator module.
Depending on each type, the STORM Standard or Comfort
can be equipped with the following actuators:
• Actuator for seat angle adjustment,
• Actuator for backrest adjustment,
• Actuators for legrest adjustment,
• Actuator for chin control.
The control of the actuators is performed via the joystick box and,
if required, via an additional control box.
The socket boards for the connection of the actuators are
located in front under the seat of the wheelchair.
The occupancy of the individual plug connections is marked by
symbols.
The STORM-Recaro usually has only an actuator for the
seat angle adjustment, which is controlled by the ACS.
The remaining adjustment options are integrated in the seat and
are a part of the Recaro seat. The control panel is located in the
surface of the seat. That is why the entire seat must be replaced
when the adjustment options are faulty.
14.2 Testing the actuators
The following tests can be performed on the actuator motors:
– Performance test by voltage application
– Continuity test of the motor coils by means of a multimeter
Visual test of the plug connections:
Check whether the contacts of the plug are pushed back or
oxidized.
Continuity test:
• Pull the plug of the actuator to be tested out of the socket
board.
• Set the multimeter to continuity test.
• Measure the continuity of the electric circuit of the actuator at the
inspection windows shown in the drawing at the right.
Performance Test:
• Pull the plug of the actuator to be tested out of the socket
board.
• Apply a testing voltage of 24 V direct-current to the plug contacts
at the inspection windows (see drawing at right).
• Interchange the testing connections to reverse the moving direction.
CAUTION:
Prevent to bridge the contacts by all means.
Disoreder
No measurable continuity .
Performance test negative.
>Danger of Fire and Burning<.
Cause
Cable parted
Motor defective.
2
Remedy
Replace actuator motor.
Replace actuator motor.
Plugs for Electric Actuators
Right Legrest
Seat angle
Backrest
adjust-
adjust-
ment
ment
Plugs of the Actuators
Inspection
Window
1 = blue cable
= brown cable
Continuity test
Performance Test (Testing Voltage 24 V)
Change the moving direction
+
by changing the polarity .
Left Legrest
–
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