btech
Junior Member
Posts: 55
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Post by btech on May 14, 2024 9:04:05 GMT
It was commented on in a different thread that dumping water out of the overflow tube at the end of disinfection is due to a faulty FPE pump. I do not know the reason, but FPE/FPA pumps should last about 18,000 hours plus. However, that does not mean that they wont fail early. The reason for that is easy. If you have a weak FPE the PDA pressure drop down to -500 mmHg and a lot of air is visible in the system. Failure pattern is the reduced pumped pump output (FPE) only when the machine is hot. It is enough to change the pumpbody. The resulting air blocks the DF filter. The consequence of the switching flow paths and the prevailing pressure differences, spontaneous massive rinsing processes into the flow tank. This failure normaly comes along with "VBICP test not ok" |
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Post by SrCusEngr on May 14, 2024 14:03:12 GMT
[My Two Cents] Unfortunately, the manufacturer of the gear pump had been supplying pumps and decided to improve the magnet. This changed the pump to a Rev K level. They then decided to change the magnet inside the pumps again to a different type, which changed the revision to L. The "L" pumps were put into machines with serial numbers 245XXX to 255XXX approximately. After many complaints, they again changed the magnet design to Rev M. Finally, after several more complaints, they went with a new supplier. Which is where we are at now. Remember, Germany consumes about 35,000 pumps a year just to build machines. Spares add to that. They have to rely on the manufacturer's quality control to ensure you are receiving quality parts. Since the manufacturer failed, a change was necessary.
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Post by poptartdipper on Jul 2, 2024 13:05:36 GMT
Replacing magnets isnt worth it, check insided end cap of pumps and you can see that they have been rubbing due to the bearing failing. This has happend on 50% of our destroyed magnets. Just replace with new  |
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Post by SrCusEngr on Jul 2, 2024 17:49:24 GMT
<poptartdipper> The style of pump has been changed. Please be sure to download the document: TI Modification of Gear Pumps... , from the new Global Service Portal. It contains specific information on installing the new style gear pumps. Note: The US Service Portal has been closed. Your training (and recertifications) will determine what you will have access to.
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