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Justin Neiman has been very helpful to us.

This was what the seal looked like at our annual:

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We did our annual maintenance on our centrifuge about four months ago, and started seeing rising DO levels about two weeks ago. I tore into the machine, and, sure enough, the rotating seal was shot:...

What Richard wrote. These use a positive-displacement pump that is quite capable of damaging/bursting glycol jackets unless you use a very reliable bypass regulator between intake and outlet of the...

Warren--We don't have any external inputs to our VFDs. The smaller TECOs--5hp and under--have a handy potentiometer on the front panel which can be configured to control the motor speed. I've set up...

Thanks, Warren. I think we're going with the TECO units.

Have you tried back-flushing that line?

I chose blue for our dye as it's the same color used in the propylene glycol-based antifreeze I use in the Vanagon. It has saved my bacon a few times as I was able to instantly identify a leak.

Which would explain why I'm here at work on my nominal day off!

Don at CPE has straightened this out for me. Pump is an AL LKH. I'll be getting the seals on the way.

Unf--Unfortuately, that...

Thanks.

I have a monitoring motor-protector on one of the pumps in the shop, and it showed no divergences from nominal voltage for the last few weeks.

I spoke with someone at CPE about this,...

Thanks, Warren. I'm looking at the Teco/Westinghouse as a replacement--does "on the radar" mean good or bad? We have one 1 hp Teco/W already and it seems to be a good one--so far.

Thanks!

Looks like I'll be tearing into that pump today. After I weld the broken loading dock, move an air reservoir, clean the HL system, etc.....

Thanks, Warren! I should have gone to Don to start with. Slipped my mind.

We just blew another VFD this AM. We lost one to a power surge a few years back and had one other go--like this one--for no apparent reason. One other was DOA.

These are--or were--Lenze SMV units....

We have three pumps around the brewery that might be Alfa Lavals--or not. I'd like to have some spare seals for them, but they have NO data plates (except the motors) at all. A metal plate at he top...

Alright. Here's my best guess as to what's going on:

The pre-evac system draws the air from the bottle, flushes it with CO2, then draws the CO2 down, leaving the bottle under vacuum for a very...

Thanks, Benny. All of us need some help at times!

We monitor the DO levels in the bottles, which reflect those of the beer in the bowl. The levels slowly increase during a day of bottling....

Howdy, folks.

We've been monitoring our bottle DO with a Hach Orbisphere 3100 for the last year or so. We started noticing rising bottle DOs a while back, so I rebuilt/replaced all seals connected...

If you got a decent VFD, you should be able to put a pressure sender in the output line to inform the VFD and keep your pressure constant with changing loads.

The output phase of the VFD is...

If your pump is for a beer dispensing cooler, it's probably a positive-displacement pump. If you have any unplanned restriction in a vessel jacket, the pump can easily damage the jacket.

If it's a...

Look into locally sourcing a used walk-in cooler. I think we got our last one for the cost of taking it apart and hauling it off.

Yes, you can build your own. But you can most likely buy a used...

I have to replace a couple of nipples on one of our washdown hose bibs today, so decided to do a little experiment.

I made up the nipples from copper with soldered fitting. I then washed them in...

Buy used locally. We have two we sourced this way, and one was free for hauling it off.

As for building your own, it can be done--we have one huge cooler we built, but it won't necessarily be any...

I should add that the reason I prefer a preservative wax to a clear-coat is that a clear-coat will fail in places, looking really ratty and requiring stripping the entire clear-coat off to refinish,...

I've been shopping and these things ain't cheap!

Measured our nominal 10" vent pipe and it is 10 5/8" OD, which is larger than 10" nom. stovepipe, which is a bit of a problem. I can probably buy...