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Post by Maxine on Aug 18, 2022 17:26:54 GMT
have K machine with no flow errors. acid and bicarb have correct bath. dereation, flow, inlet pressure all perfect. membranes new. TCD is set to 13.5 but conductivity reads at 14.1. Acid and bicarb pumps are within range limits. temp is cali. and set to 37.0 . but can not get the conductivity to get with 0.3 of TCD 13.5.
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Post by Sheepdog1 on Aug 18, 2022 18:07:30 GMT
what does you external meter say? are your machines jug or centralized ? if centralized make sure your pumps are not running, using gravity if you can (pump off). centralized pumps will cause up to .4 increase in conductivity reading. check balancing chamber cal as well.
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Post by Snollygaster on Aug 18, 2022 19:34:27 GMT
I've seen other posts about this and have dealt with this last week. I would check the concentrates. I was trying to PM a machine and had trouble with readings at 14.0. Machines that were at 13.5 a couple of weeks ago are testing 14.0 now.
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eric
Full Member
Posts: 114
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Post by eric on Aug 19, 2022 14:20:40 GMT
I know you said that the bicarb and acid pumps volumes are within range limits. I have noticed that the springs seem to be weakening sooner than usual so i have had many machines that i have had to recalibrate at 6 months to get the conductivity to match......
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Post by Maxine on Aug 19, 2022 17:07:40 GMT
on central loop with pumps on. 90xl reads 14.1. Balancing chamber is spot on also. This is the only machine on the loop that is off from the TCD. I will take it off the loop and put on jugs and see if it is pushing thru the pumps. concentrates are also good.
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Post by David on Dec 16, 2022 1:51:57 GMT
Rogue concentrate pump?
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