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Post by biomedfossil on Jan 4, 2023 17:47:19 GMT
I was wondering if anyone could help me out.
I have T machines 20,000 to 40,000 hours (3T0Sand 4T0S series).
I am having several machines with the same issues over the past year or so.
I have a few machines which the dac value won't get above 135 while on 800 flow. I know it should be higher but for some reason I am unable to accomplish this.
I also have several D pumps where the dac values have to be extremely high to reach 23psi (240-247).
I have rebuilt pumps and exchanged heads as well. I have even put new pump motors and at times this doesn't even fix the problem
I am still able to calibrate the pressures with no problems. I am just not feeling confident with these type of readings.
Thanks for your help.
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pacnw
Full Member
Posts: 187
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Post by pacnw on Jan 4, 2023 19:41:45 GMT
My guess is all this started happening after the software upgrade??? I am also seeing the low value on the flow motor DAC. I've also seen flow errors happen due to this as the lower DAC value means more flow through the Flow pump(the higher the number the lower the flow). Eventually you will see a flow error show up because the machine can't keep up with the discharge of fluid via the flow motor. The repairs are usually simple but not cheap, with replacing the teflon gear head being the most common and once in a while a new motor. This usually solves the issue.
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Post by yellow2green on Jan 16, 2023 15:34:45 GMT
For your D pumps
Id check your gauge. I was having issues with machines not getting to or barely getting to -23mm and my gauge was off. Even at atmosphere it was saying 0. But I got a new gage and I was turning my 255 DACs down to as low at 200.
Also Check valve 39. TS guide says to clamp the tubing on it and if you are able to achieve pressure (or gets you noticeably more) when its clamped you know 39is leaking.
As far as the flow I'm not sure
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phillipashleyludlow
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Post by phillipashleyludlow on Jan 20, 2023 15:18:20 GMT
yellow2green 255? iv always been under the impression anything over 230 and you need to rebuild the pump Rebuild the motor 
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Post by yellow2green on Jan 20, 2023 20:27:51 GMT
phillipashleyludlow I was putting new brushes in the motor and a new pump head on there and it was the only way to achieve -23mm. With the new gauge I've turned one down to 200 that was at 255 on the old gauge
Can you rebuild the pump head?? i have a ton of machines now hitting 30k hours and some over, and those pump heads are killing my budget. ive been swapping with the flow head occasionally to prevent getting a new one but im almost positive some one has done that a few times before me.
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phillipashleyludlow
Full Member
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Posts: 148
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Post by phillipashleyludlow on Jan 30, 2023 19:27:33 GMT
phillipashleyludlow I was putting new brushes in the motor and a new pump head on there and it was the only way to achieve -23mm. With the new gauge I've turned one down to 200 that was at 255 on the old gauge Can you rebuild the pump head?? i have a ton of machines now hitting 30k hours and some over, and those pump heads are killing my budget. ive been swapping with the flow head occasionally to prevent getting a new one but im almost positive some one has done that a few times before me. no yellow2green, i misspoke about "rebuilding the pump" when, i was actually trying to say "rebuild the motor"  |
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