Stream Problem - Impeller I Think (?)

[Eve]

Hi Roger,

In my post "Another Satisfied Customer", I mentioned the problem we had with one stream not starting without a "jump" (turning the impeller and/or removing and reinserting it).

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In the original post I said: My only problem at the beginning was that the impeller on one seems stiff and when I first turned on the streams the controller would scream because the stream wouldn's start. I had to open it up and turn the impeller to get it to start. This would happen each time we turned it off (i.e., to readjust the positioning of the stream). Since I'm not using a mode that stops the streams at any time and I don't use the "food" button to shut the streams off, I have had no problems.
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Last night a terminal strip went bad and shut everything down at around 3:00 am. When I came downstairs at 7:30 almost everything was shut down, including the streams. When we isolated the problem, replaced the bad terminal strip and started everything up again, the one stream wouldn't start. Had to take the cover off, turn the impeller, remove it, reseat it and then it started.

I thought that since I would not use a mode that would shut down the streams that this wouldn't be a problem, but I didn't think about power outages, etc. What if the power went off 5 minutes after I left home and then came back on 20 minutes later. That controller would be screaming all day :-(

What would you suggest that I do about this - anything I could try? Could another impeller make a difference (this one seems very tight)?

Thanks for your help,

Eve

 

[rvitko]

Let's try this first- there is a part referred to as bearing bush in the manual on pages 48 and 49. This part can be pryed out with a slotted screwdriver. In the old days this part was called lower bearing but it was changed to being called a bushing since that is more technically correct and it exempts us from bearing compliance and anti dumping acts. Anyway bearing bush is a mistranslation. Pry this part out and make sure it is properly inserted, there are 2 groves that line up where it inserts. I have found that for what ever reason a 180 degree rotation from how it arrives often fixes this problem- I have no logical explanation for this since the parts are perfectly symmetrical with any instrument I have to check with. Try it and then push firmly down on the magnetic rotor assembly when you reinsert it. After this check that it restarts properly. If this doesn't do it I will send you a new drive unit. It is odd to have anything outside of some changes in alignment from shipping because the pumps are tested twice before they leave, once before the motor is added to the driver and once as a complete product. I know the lady that builds them and calling her anal retentive would be putting it mildly. She will stop production if she finds the slightest issue with a part. It still is possible though that someone can make a mistake.

 

[Eve]

We will try that (probably not until Thursday/Friday when Iwill be home all day just in case "Murphy's Law" kicks in and let you know if the problem continues.

Thanks much for your help!

 

[Eve]

Roger - just to give an update.

We never did what you suggested (it's just easier to let the pump run continuously - the old "let sleeping dogs lie" . Decided to wait until an event (power outage - which we get from time to time) and then we would follow your instructions.

However, we have had many power outages recently - some for an hour, some for a few minutes, some for 15-20 minutes, etc., and each time the streams have started with no problem so whatever the issue was seems to have taken care of itself with use.

 

[rvitko]

Good to know but should it come up again just let me know.