MemberOctober 5, 2020 at 5:07 pm
in my family environment there are 3 older Minivator 950 lifts.
The dealer and service company at that time can no longer be reached. So I now take care of the lifts myself.
At the moment I have the problem with 2 lifts that the batteries are no longer charged in some positions (error 2).
Since the voltage between the screw of the wiper (copper rail) and the rail is always OK, the problem seems to be the electric connection to the rail (- pole).
Unfortunately, I don’t have any technical documentation that shows how the contact to the rail is implemented.
I would be very grateful for tips on function, cleaning and adjustment.
- This discussion was modified 1 month, 4 weeks ago by Triplelift.
MemberOctober 5, 2020 at 10:04 pm
the 0 volt connection is via the rail, to be more precise the rack and pinion gear, make sure the rack is clean, no build up of compacted fluff and grease etc in the teeth, normally a brisk going over with a wire brush to remove the build up is enough to cure the issue, then a little grease to relube it, if its not then you may need to clean the pinion gear, which is a carriage off the rail job to do it safely!
also try taking a scouring pad to the copper strip to clean it up, removing any tarnishing so the charge pin gets a better contact, and check the condition, length of the pin and replace it if needed
MemberOctober 6, 2020 at 6:04 am
Thanks a lot!
It seemed, that removing the Chair from the rail is recommended to clean the rollers and the pinion. This will probably require removing the top cover and the two stops (top end stop and final limit stop) from the rail?
I’m a little worried not to damage the charge pin while moving the chair back on the rail.
I don’t own a “busbar pickup loading tool”.
Is it possible, to remove the contact pin through the small flap on the panel to keep it save while putting the chair off and back?
MemberOctober 17, 2020 at 5:30 pm
MemberOctober 9, 2020 at 2:30 pm
Classic fault on the 950’s, it will be the carbon brush. Run the lift off slightly at the top to expose brush and clean contact area with a bit of emery cloth and it will be fine . I replace every one from the factory with longer brushes with a stronger spring.
You can take the brush out in situ if you wish but getting it back in is very tricky. You do not need to take the lift off fully, just enough and you see the brush pop out. Push it back flush with your finger and go very steady when driving it back on, no drama
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