Help Required Smr 1224 limit switch

[duaneclaude]

Can anyone advise where I can obtain the limit switches for an smr 1224 H-H mount?
My CM 1.2 dish will only move west, and I have tracked the fault to one of the actual switches

One of the switches clicks when pressed, but the other is just moving in and out without the click.

 

[anto@]

type the magic word into san google
microswitch and a window opens

 

[duaneclaude]

type the magic word into san google
microswitch and a window opens

I already tried that but there are so many different types. Not sure which to buy so was hoping someone might know.

 

[Channel Hopper]

Can anyone advise where I can obtain the limit switches for an smr 1224 H-H mount?
My CM 1.2 dish will only move west, and I have tracked the fault to one of the actual switches

One of the switches clicks when pressed, but the other is just moving in and out without the click.

Post a picture, though most switches of that era have the part number on the casing.

 

[duaneclaude]

Have looked for these, but they all look different.

 

[Channel Hopper]

Have looked for these, but they all look different.

That is quite standard for the era. Any Taiwanese actuator supplier will have them

 

[duaneclaude]

Ta, will keep looking then.

 

[a33]

My CM 1.2 dish will only move west, and I have tracked the fault to one of the actual switches

One of the switches clicks when pressed, but the other is just moving in and out without the click.

Apart from the clicking or not-clicking:
Have you confirmed that the motor runs again to the east, when you (test-wise!) short the concerned switch+diode?
So that the switch was really the only cause?

It's not a difficult check, so that is what I would do fort a test. Or maybe you have done it already?

Greetz,
A33

 

[duaneclaude]

That is quite standard for the era. Any Taiwanese actuator supplier will have them

Found these but they have 3 prongs. Can the middle one be ignored ?

 

[duaneclaude]

Apart from the clicking or not-clicking:
Have you confirmed that the motor runs again to the east, when you (test-wise!) short the concerned switch+diode?
So that the switch was really the only cause?

It's not a difficult check, so that is what I would do fort a test. Or maybe you have done it already?

Greetz,
A33

Yes, was flicking the switch in and out and when I tried turning the dish it went both ways again for a short while, but has since packed in again.

 

[a33]

Found these but they have 3 prongs. Can the middle one be ignored ?

Yes.
You need only the contacts for "normally closed". The third contact is for "normally open".

Greetz,
A33

 

[duaneclaude]

Yes.
You need only the contacts for "normally closed". The third contact is for "normally open".

Greetz,
A33

Thanks for that info.
Will measure the switches tomorrow and if they are the same as the ones advertised will buy them.