Elma RM90 circuit diagram

[MikeEll]

Hi all, good morning.  I'm repairing an Elma RM90 at the moment and I believe I have a fault on the main circuit board.  Does anyone happen to have a circuit diagram for the actual circuit board/main PCB.  Note this is not the general machine circuit diagram thats available on Cousins, I already have that.  The PCB looks pretty basic so should be repairable.  My main suspects at the moment are a pair of Triac transistors that dont have a heat sink.

I also have an Elma RM80 for sale if anyones interested.  Drop me a PM.

Thanks in advance.

Mike

[AndyGSi]

I very much doubt that it was ever available so you're down to tracing it out.

If you suspect the Triacs then just pull them and test them.

[MikeEll]

there's probably less than 50 components in total on the board, so reasonably easy to test.

[Ronp]

I hve the original schematics.

 

Good luck,

 

 

elmarm90-circuit.pdf

[Knebo]

HI @MikeEll and @Ronp,

I might have an opportunity to get a used RM90 for an incredible price (450 bucks) from a local watchmaker... the only thing is that the timer doesn't work. According to the watchmaker, it is still usable in the current state. One just has to push a botton or so to manually switch the jar / advance the programme. 

I'm wondering in terms of eventually repairing the timer, can you give me and info/advice?

Best,

C

PS: do you have the full manual of the RM90? Not only the circuit diagram, I mean. 

[tomh207]

Here you go @Knebo

 

https://www.cousinsuk.com/PDF/skus/252_C0381 RM90 Cleaning Machine.pdf

 

Tom

[MikeEll]

21 hours ago, Knebo said:

HI @MikeEll and @Ronp,

I might have an opportunity to get a used RM90 for an incredible price (450 bucks) from a local watchmaker... the only thing is that the timer doesn't work. According to the watchmaker, it is still usable in the current state. One just has to push a botton or so to manually switch the jar / advance the programme. 

I'm wondering in terms of eventually repairing the timer, can you give me and info/advice?

Best,

C

PS: do you have the full manual of the RM90? Not only the circuit diagram, I mean. 

these machines are very basic internally.  Very simple electronic components that can be tested and replaced.  Finding a replacement timer may be a little tricky, but not impossible.  I'd go for it personally.

On 10/26/2024 at 7:48 PM, Ronp said:

I hve the original schematics.

 

Good luck,

 

 

elmarm90-circuit.pdf 45.62 kB · 14 downloads

Thanks Ronp, but thats the machine general schematic, not the circuit diagram for the main board that I'm looking for.  

Mike

Edited November 13, 2024 by MikeEll

[AndyGSi]

Are these not mechanical timers with an electrical contact?