VR2 CONTROL SYSTEM
SK77898/2
PG DRIVES TECHNOLOGY
12
7 Safety Checks
The electronic circuits in your control system have been designed to be extremely
safe and reliable. The on-board microcomputer carries out safety checks at up to
100 times per second. To supplement this safety monitoring you should carry out the
following periodic checks.
If the control system fails any of these checks, do not use the wheelchair and contact
your service agent.
7.1 Daily Checks
Joystick: With the control system switched off, check that the joystick is not
bent or damaged and that it returns to the center when you push
and release it. If there is a problem do not continue with the
safety checks and contact your service agent.
7.2 Weekly Checks
Solenoid (parking) brake:
This test should be carried out on a level floor with at least one
meter clear space around the wheelchair.
• Switch on the control system.
• Check that the battery gauge remains on, or flashes slowly, after one
second.
• Push the joystick slowly forwards until you hear the parking brakes operate.
The chair may start to move.
• Immediately release the joystick. You must be able to hear each parking
brake operate within a few seconds.
• Repeat the test a further three times, pushing the joystick slowly backwards,
left and right.
Connectors: Make sure that all connectors are securely mated.
Cables: Check the condition of all cables and connectors for damage.
Joystick gaiter: Check the thin rubber gaiter or boot, around the base of the
joystick shaft, for damage or splitting. Check visually only, do not
handle the gaiter.
Mounting: Make sure that all the components of the control system are
securely mounted. Do not overtighten any securing screws.
7.3 Servicing
To ensure continued satisfactory service, we suggest you have your wheelchair and
control system inspected by your service agent after a period of 1 year from
commencement of service. Contact your service agent for details when the
inspection is due.
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