Barrett Jewel, Technical Manual

Page: 31 / 44

14.3 Electerical System Inspection
A full function test of the powerchair should be carried out to determine any major faults which will
be indicated by flashing lights on the controller. By reference to Section 15 the fault may be
diagnosed.
Check the condition of the main wiring loom for damage. Check the beau plug connector which
should be tight fitting so that it is not easily dislodged in use.
Check the plugs connecting the main loom to the motor and battery looms should be examined
to ensure that the wiring is secure with no evidence of chafing or damage. The contacts inside
the plugs should be inspected for prominence to ensure good contact is made.
A stall-test should be performed to check that the circuit breakers function correctly. Place the
powerchair with the castor wheels against a solid object and ensuring the drive wheels do not
spin, push the joystick forward. After a short period the power to the motors will be cut by the
operation of the circuit breakers.
Reset the circuit breakers by pushing in the buttons which are found on the battery boxes.
14.4 Wiring Loom Removal and Replacement
Disconnect the beau-plug from the rear of the controller. Disconnect the motor and battery loom
plugs from the main loom and withdraw the main loom.
To replace, feed the main loom underneath the seat from the same side as the controller. Connect
the motor and battery loom plugs to the main loom and re-connect the beau plug to the controller.
The application of petroleum grease to the contacts will assist in assembly and offer protection
against moisture.
14.5 Battery Loom Removal and Replacement
There are two distinct looms fitted depending on which battery box is being worked upon. When
viewed from the rear of the powerchair the front battery box has a loom with one grey plug, the
rear battery box has a loom with two plugs - one grey and one black.
Remove the rear battery box from the powerchair and remove the lid. The connections to the
battery terminals should be removed and then pull off the connections to the circuit breaker.
Re-fitment is a reversal of the above. Note that the grey plug is positioned to the front and the
black plug exits from the rear.
Remove the front battery box from the powerchair and remove the lid. The connections to the
battery terminals should be removed and then pull off the connections to the circuit breaker.
Re-fitment is a reversal of the above. Note that the grey plug exits from the rear of the lid.