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Post by sicman1 on Nov 7, 2022 13:17:38 GMT
I have a version 9 machine that will not open VBICP when a solcart cartridge is installed. This in turn causes a Bicarbonate Cartridge not Connected Correctly alarm. Machine will open and close VBICP just fine manually in test mode 1.23. I’ve checked for flow from bottom solcart arm to the y connector and it is good. I’ve tried both Digital and Valves boards and still have the problem. Any ideas?
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Post by Admin on Nov 7, 2022 13:56:28 GMT
Does the cartridge fill initially? Also- check the Y connector to make sure it doesn't have a restriction
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Post by sicman1 on Nov 7, 2022 14:09:42 GMT
Yes, fills completely. And flow through both legs of the Y connector too. Just seems as though VBICP is not being commanded to open. Watched overview screen and vbicp itself for ten minutes after solcart install and it won’t open.
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Post by sicman1 on Nov 7, 2022 14:19:52 GMT
When I say flow at the y connector, I mean when tubing is pulled off there is flow through the y legs. Otherwise there is no movement in the tubing from lower solcart arm when the tubing is connected.
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Post by Admin on Nov 7, 2022 14:23:39 GMT
Did you test the valve in TSM? Are you getting voltage to the valve
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Post by sicman1 on Nov 7, 2022 15:03:58 GMT
Yes. Valve opens and closes in TSM test 1.23 also plunger moves back and forth.
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btech
New Member
Posts: 43
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Post by btech on Nov 8, 2022 12:01:52 GMT
The VBICP opens after the cartridge were filled and shortly before the bicarbonate pump starts running to flush the first batch of bicarbonate solution. A precondition is that the balance chamber is running and flow is stabilized.
Usually the problem is caused by a problem with the balance chamber initialization, e.g. due to air in the system or a blocked filter on machines with DF filter or HDF online. Also a worn out FPE can be the cause.
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Post by sicman1 on Nov 8, 2022 19:04:29 GMT
Yes I have seen Membrane Moving alarms sometimes after start up. This may be causing my problem.
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SrCusEngr
Full Member
Posts: 207
Member is Online
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Post by SrCusEngr on Dec 11, 2022 0:49:11 GMT
How many hours do you have on FPE/FPA pumps? Do you see any air in the balance chamber tubing? Are you sure the DF filter is not air locked (remove the top blue coupling and liquid should flow out immediately. If air then liquid, it was air locked).
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btech
New Member
Posts: 43
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Post by btech on Jan 10, 2023 8:06:05 GMT
Any news here ?
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Post by sicman1 on Jan 30, 2023 16:40:52 GMT
So I got the machine up and going finally. Thinking possibly a weak FPE, I changed it out without any success. Still have Membrane Moving alarms and Bicarbonate Cartridge Not Connected Correctly. I then watched the test 1.19 screen and noticed the diaphragms not moving all the way on the clean side. I now figured maybe membranes. Changed out both membranes that had tears. Thinking success, I ran DFS pressure test and it fails. UF pump body not driving down the PDA pressure fast enough. Replaced UF Pump Body and all alarms solved. Thanks to all who have replied with help.
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Post by Chuck Weddle on Jan 30, 2023 16:59:41 GMT
When you have multiple problems with different causes it's tough I don't care who you are. I would chalk that one up as a big win!
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