MSP 3140 strike failure

[merchmonster]

oh. our dwell time is like half now because we are using a CTS and no glass. we are shooting the screens in around 35 LTU - i know thats not a time measurement haha. on small prints sometimes its back to back to back. so maybe that is the issue. idk.

[inkman996]

Exactly the same as us, we are now CTS with no glass or draw down time. We have to wait between every exposure for things to cool since exposure is faster than the printer is now. New bulb has not helped, and I suspect a major cause is the fact I cut a slot in the front for a tray to slide screens in right under the glass. That slot has caused air flow issues so i will probably come up with a gate of some kind to keep the positive air flow inside the exposure box while exposing. I am also considering adding an extra cooling fan on the side of the box tied into the exposure circuit to activate while exposing to help cool it off faster. I really need the machine to fire right away since with the CTS we are pushing out screens so much faster.

[gotshirtz001]

There was a trick I read about to increase the duration on the  vacuum timer. I had a couple strike failures and doing so seemed to improve the issue. I have no background on why this works, just that it did.


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That just giving the bulb and any other components a longer time to cool down.

Gotcha. I thought I remembered it being a bit more mysterious than that. Found the original post and I apparently stopped reading comments too soon. Derp.


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[merchmonster]

My tech said its not supposed to cycle more than once every 90 seconds

[balloonguy]

I have a similar question... I just added a triloc to my msp3140. The strike is fine but the lumen counter is moving way faster than it used to. DO I have to adjust the sensor so that it is not catching a reflection off the frame holder? It used to take about a minute to count down form .8. Now it is happening in about 8 seconds.
Any advise is appreciated.

[inkman996]

I have a similar question... I just added a triloc to my msp3140. The strike is fine but the lumen counter is moving way faster than it used to. DO I have to adjust the sensor so that it is not catching a reflection off the frame holder? It used to take about a minute to count down form .8. Now it is happening in about 8 seconds.
Any advise is appreciated.

If I read it right you are saying the count down after vacuum is taking longer? I believe the count down does not start till the correct HG is reached, in otherwords if it is not getting to the correct vacuum pressure as fast as it did pre tri loc then it will take longer. You just have to play around with the ropes to promote faster pull down.

[balloonguy]

I have a similar question... I just added a triloc to my msp3140. The strike is fine but the lumen counter is moving way faster than it used to. DO I have to adjust the sensor so that it is not catching a reflection off the frame holder? It used to take about a minute to count down form .8. Now it is happening in about 8 seconds.
Any advise is appreciated.

If I read it right you are saying the count down after vacuum is taking longer? I believe the count down does not start till the correct HG is reached, in otherwords if it is not getting to the correct vacuum pressure as fast as it did pre tri loc then it will take longer. You just have to play around with the ropes to promote faster pull down.

It is the exact opposite problem. After the vacuum is done the exposing counter counts down WAY faster than it used to... It is so strange.

[blue moon]

I have a similar question... I just added a triloc to my msp3140. The strike is fine but the lumen counter is moving way faster than it used to. DO I have to adjust the sensor so that it is not catching a reflection off the frame holder? It used to take about a minute to count down form .8. Now it is happening in about 8 seconds.
Any advise is appreciated.

If I read it right you are saying the count down after vacuum is taking longer? I believe the count down does not start till the correct HG is reached, in otherwords if it is not getting to the correct vacuum pressure as fast as it did pre tri loc then it will take longer. You just have to play around with the ropes to promote faster pull down.

It is the exact opposite problem. After the vacuum is done the exposing counter counts down WAY faster than it used to... It is so strange.

put some dark tape on the screen and see what happens. You could also try with and without the screen and see if the screen makes the difference.
pierre

[Itsa Little CrOoked]

This tread wandered off point just a bit, but no matter.   

After MUCH more experimenting, I have determined the cause of my particular Failure To Strike (MSP2125) was 2 fold:

1) My main contactor is old and needed refreshing or replacement. I ordered one, but in the mean time was able to completely disassemble my old one to clean up* the contacts. Things were much improved, BUT

2) I am experiencing too much heat for a proper re-strike and simply waiting or adding another 30 seconds of vacuum (dwell) seems to be the solution. Simply can't rush the re-strike as Alan and others have mentioned....at least not on my NuArc. I've modded my unit, which was designed for manual frames. I did it to accept screens for my auto, and that is complicating the issue.

It only took 3+ years for me to fully understand how.


(Slaps forehead sharply)



PS *Disassembly and re-assembly of my contactor took some courage. The tiny springs can go SPROING!! so darned easily and never EVER be seen again.

[mk162]

Keep your eyes open at the industrial surplus companies.  We got an Amerigraph 755 that can shoot 23x31's 2 at a time for I think $1600 with shipping.  It's an awesome unit.  I did have to fix some light leakage from the vents, I just stuffed them with gutter filter foam.  Blocks the light and it still breaths.  The unit never overheats and does screens in about 15 seconds.

[rmonks]

I too have had similar issues in the past. first time I removed and cleaned all the connections i could that fixed it first time second time the bulb went out, replaced the bulb good to go. But check and clean your connections. Un plug it first.

[T Shirt Farmer]

Is there a glass cover over the bulb? I removed mine and put a feather fan blowing towards hood, this really helped.

[T Shirt Farmer]

Is there a glass cover over the bulb? I removed mine and put a feather fan blowing towards hood, this really helped.

Be very careful in regards to handling electrical components, there is large capacitor in the cabinet that would spin you in circles for week if you got hold of it ;-)

[merchmonster]

If you open the covers it has magnets that deactivate the machine

[1964GN]

Anyone out there ever have excessive strike failures on the MSP 3140 and fix it.

This has always happened since new , I adjusted the the voltage on it as  directed with little success.  Usually it will go through spats of always throwing the failure but then will work well for  few.
Now it seems we shoot a screen go to rinse , rinse completely then come back to shoot the next screen and still it will strike fail a couple of times before it lights up.

Its particularly hi lighted now since we got a new Starlight but still need to use this or at least have it working to sell.


Any help would be appreciated

We had this exact issue but before I started working here. We ruled out everything else (discussed here), and we found the solution. Our owner has all of the details. Shoot me a PM and I'll give you his a name and number.