Help with stuck swim platform

[Kub Cat]

The boat is an early 2000s Sunseeker Manhattan.

When the down switch is pushed momentarily, the platform goes all the way down and then keeps trying to go further.

The only way to stop it is to them off the power and then push what appears to be a reset switch.

Trying to attach a photo and failing of the reset switch.

 

[jfm]

It’s an electrical problem. Either the switch or a relay. Easy to diagnose with multi meter and it won’t be complex. Just find out which component is incorrectly maintaining voltage to the motor even when the up/down switch is released.
No harm done- when it hits the bottom stop the hydraulic pressure relief valve will open, which means no damage is being done.

 

[MapisM]

No harm done- when it hits the bottom stop the hydraulic pressure relief valve will open, which means no damage is being done.

Are you sure that all S/skr swim platforms have always been hydraulic, J?
'Dunno what model the OP is talking about, but "early 2000s Manhattan" reminds me of the 56, whose sliding swim platform I would have thought to be moved by some sort of electric-only linear actuator, like rack and pinion.
But I'm saying this only based on my memories lowering/raising one of those things - which I can't say I liked, btw.
I didn't look at the mechanism in detail, so I might be wrong even assuming it is actually a 56.
Regardless, I agree that it sounds like a switch/relay problem.

 

[jfm]

Yes I remember the hattan 56 slider. Not good.

My post assumed hydraulic so yes if it is not hydraulic then ignore that part of my post. I would expect it to be hydraulic, but if it uses electro mechanical linear actuators instead then everything is different.

 

[Kub Cat]

Thank you very much, I have a multimeter on board and now have a direction to start looking.

 

[Kub Cat]

It is a 64 and it sounds like the hydraulic circuit that is operating.

Attached is a photo of the unit with the reset switch.

The reset switch is in the middle of the stainless circle.

 

[jrudge]

The assumption is have is the same as others

For whatever reason the system does not de-energise. The reset button probably powers it off ( plus maybe other things ) that then allows the thing to de-energise.

The controller could be solid state bit more likely than not it is a relay. If it were me I would first find the the box of relays and go from there

 

[Seastoke]

is it not the unit on the right which has two plugs on it that operate the oil valves looks like one is for up and one is down ,you can unscrew the small pins in the middle ,take off both plugs and seeif it move if not put one back on and see which way it goes ,if you get the right one then measure the voltage on the plug if it is on all the time even when you release the switch ,then it is electrical if it goes off when switch released then its the oil valve ,

 

[Kub Cat]

Problem solved.

After pulling apart and testing switches and the diode box (still haven’t found the relays) it appears the unit with the round disc is at fault.

Pushing the disc all the way in activates the platform up. When the disc is out, towards the camera, it has a t handle adjustment screw that limits the travel. One of the 3 screws holding the disc was missing and allowed the disc to tilt slightly.

The tilting of the disc allowed the shaft to come out too far and get stuck. There is no actual reset switch as I initially thought but what I was doing was moving the disc slightly back, enough to locate it in the correct position.

Adding the third missing screw and tightening it all up solved the problem.

Well I think it solved the problem, we have done quite a few test cycles and all worked well.

Thank you to everyone that provided some guidance and gave me the confidence to have a look.

 

[Seastoke]

Problem solved.

After pulling apart and testing switches and the diode box (still haven’t found the relays) it appears the unit with the round disc is at fault.

Pushing the disc all the way in activates the platform up. When the disc is out, towards the camera, it has a t handle adjustment screw that limits the travel. One of the 3 screws holding the disc was missing and allowed the disc to tilt slightly.

The tilting of the disc allowed the shaft to come out too far and get stuck. There is no actual reset switch as I initially thought but what I was doing was moving the disc slightly back, enough to locate it in the correct position.

Adding the third missing screw and tightening it all up solved the problem.

Well I think it solved the problem, we have done quite a few test cycles and all worked well.

Thank you to everyone that provided some guidance and gave me the confidence to have a look.

thanks for letting us know and well done ,it may well help some one else.