- This topic has 4 replies, 3 voices, and was last updated 6 months ago by
.
Stannah 260 Stairlift dead (Sorry new member needing help)
-
-
24V from batteries OK and from the circuit diagram I have which isnt quite correct it suggests that the Ultimate limit switch is open.
Cant find the Ultimate limit anywhere. Can anyone help please or even suggest where I can get a circuit diagram. Mine is the RED PCB but guess I must have the diagram for the Green PCB
Jack
Doncaster
-
Sounds like it’s over travelled! Ultimate switch is a switch in the cluster on the charge pin, the charge pin has a stepped plunger that operates two switches, the slowing switch and the ultimate / over travel switch, hand wind the lift off the charge point and put a call in and see what happens? If no hand winding tool on site? Push on the top of the seat back so that the lift leans back and the charge pin extends, then put a call in
If it has over travelled? Then it will most likely do it again and it needs the slowing ramp or the charge ramp position adjusting to stop it
If the lift now runs I’ll post up how to adjust the slowing and charge ramp
If it doesn’t? We will continue to talk you through the problem till we do have a working lift
-
ok sounds like the osg has kicked in! find the handwinding handle, flick the battery isolation switch off and wind the lift UP the rail about 6”, then you will need to reset the safety gear, can be done without stripping the covers off if you know what your doing, but we will remove the covers on the cluster allowing better access to it
on the lower rail, there are a set of covers around the drive gear (pinion) these need to come off, easy job, a few screws, keep thep together as you remove them and dont mix them (different size, length screws) just remove the lower side covers, should give you enough room to work, winding the lift up the rail takes the pressure off the safety gear and allows you to lift it free of the rail, there is a round pin, the safety gear is held clear of the rail by this pin, the spring is kept in place by a spring pulling on it, you need to lif the pin up andthen rotate/lift the safety gear mech, till its clear of the rail and drop the pin into the cut out on the safety gear, its difficult to explain but when you see it, it will make sense
once the pin is in the cut out and holding the safety gear back, switch on the battery isolation switch and put an UP call in! that way if the osg trips again it wont dig into the rail and you wont need to hand wind it AGAIN! before you reset it again, if it runs ok check the condition of the rail where it stopped, if the rail is damaged where the safety gear bit into it! take a fine file to the damage and smooth it out, nothing excessive just smooth off the burr! then place a down call in….hopefully it will run past the place it stopped? DO NOT run the lift into the lower charge point with the cluster covers removed! replace the covers before you complete the run into the charge point, test run the lift a few times up and down the rail, as the lift has been off charge for a while, stick it on charge over night before using it in anger!
also with the cluster cover off check the condition of the two peice roller and the other rollers they should be whole with no chunks missing or flats! they should be completly round! if not they need replacing, make sure they are clean and there is no build up on them, or the rail! watch them while the lift runs they should roll, not slide! they are called rollers for a reasom 🙂
good luck, and dont get any grease on the rail or the rollers as it will b u g g e r them up! wipe it off with a industrial wipe or a lightly damp cloth, any stubburn build up on the rail use a soft dish pan sponge the scubbing side to remove the build up, they are tough enough to break up the crap but not to damage the rail unless you go loopy with it!
-
Thanks for your replies, Spike.
I have almost the same problem with a Stannah 260 I’m trying to fix for someone but I want to make absolutely sure I’m doing the right thing before I take their stairlift apart.
The stairlift is 14 years old and just in the past few weeks it’s started, intermittently, getting stuck at the TOP. Winding it manually down a bit fixes the problem (until the next time).
Am I right in thinking that the fact this only happens at the top suggests it’s the ultimate limit switch not the over speed governor/safety switch? Can you please talk me through how to adjust the slowing ramp or charge ramp position to fix it.
-
P.S. The Installation Manual says (p50) “ensure that the ultimate limit switch plunger is not activated”, which implies this is visible, but it doesn’t tell me where it is and the only plunger I can see is (I assume) the end of travel plunger.
-
-
You must be logged in to reply to this topic.
