New CDL vacuum pump

[VT_K9]

We vent ours to the outside of the building. Definitely need to run a little more metal pipe than we did with the liquid ring pump due to heat. I haven't run it enough to be able to compare it to our old one.

Mike

[Mooneybc]

I run a 2 hp CDL rotary vane pump and am overall pleased. It runs 26-29” regularly. It is impressively quiet and takes little oil. I plump the exhaust out of the building and it leaves a yellow oily residue. I will say I am not impressed with my CDL moisture trap as it failed 3 times last year.

[VT_K9]

We have three moisture traps. Two (one each) CDL black units in our shacks near the mechanical releasers and a 3" one at the vacuum pump. The pump is located 65' above the releaser locations and sap has never made it that far.

With that said the releasers have had a couple issues (maybe more maintenance and maybe cooler temp related) which resulted in not dumping and the traps filling. They did their job.

Mike

[Walling's Maple Syrup]

The pumps from CDL are just re- branded Becker pumps. Exact same.

Not true. Last I knew, cdl pumps were of China origin. Becker pumps are manufactured in Germany and are good quality. Their facility in the US is in Ohio. I have personally been there and toured it. I run two of the U pumps. The U5.101 I have on my 6000 tap woods. It is a 70.6 cfm pump. Typical yields are 40-45 gallons sap per tap and around 7lbs syrup per tap. Becker customer service is second to none.
Neil

[spud]

Wow, 40-45 GPT is crazy good. I wish I could get that. What’s your secret? I’m lucky to get 25 GPT.

Spud

[Mooneybc]

My moisture trap failed today and my CDL rotary vacuum pump ended up Sucking a lot of sap through it. I changed the filter and drained the pump of oil several times today but every time I start the pump the new oil immediately turns a yellowish white. Any tips or thoughts on how to get all the oil out completely?

[spud]

Drain the oil and replace it with diesel fuel. Run the pump for a few hours and then drain the fuel out and replace it with oil.

Spud

[Mooneybc]

Drain the oil and replace it with diesel fuel. Run the pump for a few hours and then drain the fuel out and replace it with oil.

Spud

That seriously works? That won’t destroy the pump or vanes?

[spud]

Yes it works. I have done it in the past. Call CDL in Saint Albans and ask for Park. He knows pumps better than anyone.

Spud

[tcross]

i clean my bb4 pump at the end of the year, or if i suck some sap up, with diesel. i usually let it run for half an hour or so, then drain and fill back up with oil. On the subject of oil turning yellow/white... i bought a large container of pump oil last season that would be clear when cold, then once the pump would run, would turn cloudy for the first 20-30 minutes, then would be crystal clear. can't recall the brand, but i was told it was normal for some oils? not 100% sure if that's correct, but my pump preformed normal with it. for what it's worth...