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Offline Ear

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Humidity Problem
« on: July 20, 2015, 01:02:21 PM »
Came in this morning to a "dew condensation" error on my Screen pt-r 8600 platesetter. She won't initialize and says I need to lower the humidity. This is SO Oregon in summer and it's dry as a bone... less than 40% humidity.

I typically leave it on 24/7 but we have been having random power outages so I turned it off for the weekend. I'm guessing the fact that its fans weren't running allowed some condensation in a diode block. I tried running on half-diode mode but it must check all of them on initialize. It says it is in diode block 6.
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Offline Farabomb

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Re: Humidity Problem
« Reply #1 on: July 20, 2015, 01:17:38 PM »
Any chance you get those big ass desiccant packs with your paper like we do? Maybe toss one of those in there and it will absorb any extra moisture.
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Quote from: Ear date=1459965256 link=msg=278846
Quote from: Farabomb date=1459964381 link=msg=278844
It's more like grip, grip, grip, noise, then spin and 2 feet in and feel shame.
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Offline Ear

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Re: Humidity Problem
« Reply #2 on: July 20, 2015, 01:24:07 PM »
I haven't seen those. They don't need to use moisture control in the west because it is so dry. I'm very surprised that I have this error, because it is not remotely humid here. It must be very sensitive and just have a little condensation on a lens or something. I do not want to try to climb inside and open the printhead.
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Re: Humidity Problem
« Reply #3 on: July 20, 2015, 01:25:26 PM »
Faulty sensor?
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Offline Ear

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Re: Humidity Problem
« Reply #4 on: July 20, 2015, 01:34:13 PM »
hmmmm... maybe
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Offline Farabomb

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Re: Humidity Problem
« Reply #5 on: July 20, 2015, 01:51:02 PM »
Blowtorch?

Taco bell?

Profit?
Speed doesn't kill, rapidly becoming stationary is the problem

I'd rather have stories told than be telling stories of what I could have done.

Quote from: Ear date=1459965256 link=msg=278846
Quote from: Farabomb date=1459964381 link=msg=278844
It's more like grip, grip, grip, noise, then spin and 2 feet in and feel shame.
I once knew a plus-sized girl and this pretty much describes teh secks. :rotf:
They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety.
         â€”Benjamin Franklin

My other job

Offline Ear

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Re: Humidity Problem
« Reply #6 on: July 20, 2015, 02:06:00 PM »
I tried a blow dryer.

Called my tech and he is checking to see if it might be a sensor.
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Offline Ear

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Re: Humidity Problem
« Reply #7 on: July 20, 2015, 03:11:40 PM »
She's back up and running. I took all the covers off (terminated the interlocks while I was at it - run without covers), put a big fan with a hair dryer behind it, aimed at the printhead. Half hour of that action and it dried out and started up. WOOT
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Offline andyfest

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Re: Humidity Problem
« Reply #8 on: July 21, 2015, 03:13:47 PM »
Quote from: Ear link=msg=270496 date=1437411741

Came in this morning to a "dew condensation" error on my Screen pt-r 8600 platesetter. She won't initialize and says I need to lower the humidity. This is SO Oregon in summer and it's dry as a bone... less than 40% humidity.

I typically leave it on 24/7 but we have been having random power outages so I turned it off for the weekend. I'm guessing the fact that its fans weren't running allowed some condensation in a diode block. I tried running on half-diode mode but it must check all of them on initialize. It says it is in diode block 6.

Check the readings on all 8 of the dew sensors. If there is one (#6 in your case?) that reads way higher than the rest its likely the sensor that is at fault. A reading of 2 to 13 is normal - 20 and over will give you the warning. We have had 3 of them replaced on our T9000 (Screen 8600) in the last couple of years. It is a real PITA as all of the laser diodes have to be removed to get at the dew sensors. The sequence to check is Offline>Next>Service>OK>8600>Enter>OK>Recording Head Test>OK>Next>Next>Temperature>OK>Next. That should get you to the Test Points (TP - normal is 24-25) and Dew Point Sensors (DE1 to DE8). When done ESC to online menu.
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Offline Ear

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Re: Humidity Problem
« Reply #9 on: July 21, 2015, 03:24:55 PM »
Thanks for the tip, Andy. I will definitely run that test.
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Offline jimking

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Re: Humidity Problem
« Reply #10 on: July 22, 2015, 08:50:32 AM »
There's always de-humidifiers one can purchase. However, if the platesetter is in a very large space..............

Offline Ear

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Re: Humidity Problem
« Reply #11 on: July 22, 2015, 12:12:51 PM »
True. We really don't have high humidity here... I think it was just that I had it shut down for a couple days... no air flow and the AC was running in the office. A little condensation and it got all belligerent.
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Offline born2print

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Re: Humidity Problem
« Reply #12 on: July 22, 2015, 03:50:43 PM »
That's my Ear! Can even make a platesetter moist  :shocked:
Quote from: Tracy link=msg=301939 date=1534265274
I get back to my dept and I'm all bleep you and bleep this bleep :laugh:

Offline Ear

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Re: Humidity Problem
« Reply #13 on: July 23, 2015, 12:32:24 PM »
Quote from: born2print date=1437594643 link=msg=270572

That's my Ear! Can even make a platesetter moist  :shocked:

... be all like "hey baby, are your diodes thermal? cuz you're makin' me hot. :naughty:"
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Offline born2print

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Re: Humidity Problem
« Reply #14 on: July 23, 2015, 12:45:30 PM »
Wanna raster my pixels? :naughty:
Quote from: Tracy link=msg=301939 date=1534265274
I get back to my dept and I'm all bleep you and bleep this bleep :laugh: