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It looks to me like that is a 2-stage vacuum pump. There are 2 pumping rotors with vanes, each one in a separate compartment. The exhaust from one compartment is the intake for the second compartment. That’s also why there are 2 reed valves. It looks like 1 of the rotors is thicker than the other. I don’t know sure which comes first? I recently bought a similar 2-stage vacuum pump at Harbor Freight. Everyday price was $139 but they gave me some discounts so it wound up costing < $100 and it works great.

nice job

You the man,

Ninety percent of the time the leak leaves an oil mark... the problem is that annoying 10% in which it will leave an oil stain after years of refilling and the machine makes us look useless and some once I thought I heard her laughing at me

Txs, i was affraid to replace one of those, now seing you, i feel confidente to do it at my hotel.

Question why are you using a CPS micron meter? Do those Testo gauges not have a built in micron meter?

That also looks the wrong economizer kit for that setup, there are two different economizers for Vertical and Horizontal. I think you need the Vertical economizer for this setup.

I bitcoin for u 😅😅😅 great job

Judging by the dirtiness of those fryers I’m going to guess jack in the box

Hey man, I'm just glad to see youi tear it down, I have one that runs but is not sucking a vacuum and now I know what to do. Thanks.

Probably another company stealing refrigerant from that unit

Glorious beard

Nice job, I have this same problem and as soon as i started to look into the smoke detector it started raining so I didn’t get to finish. I thought i was crazy too because the board had power but wasn’t flashing any lights.

Did you check if there was a siphon in the drain ? If no siphon it might suck outside air in to the evaporator.

Hey where is the defrost term sensor located? Had case frozen over washed out allowed case to reach set point forced defrost heaters come in and out every five minutes term temp not reached!

Any videos on ever changing those bushings ?

Serious question sounds little dumb but left me puzzled for years. Lol If I have 213 incoming volts should I leave transformer at 240v or should I change it to 208 v. The voltage is closer to 208 but voltage is over. I would love to hear your thoughts on the matter. Thanks

Thats a loooong down time in my area..

I run into this issue a lot on these cases. I spoke with zero zone tech support and the guy told me it's because of the drip time not being long enough. And that an additional heater is not needed. What do you think about that?

I relay enjoy your programs

No fun doing this stuff

Our makeup air stop making the usual noise it’s kind of quiet and sitting could it be that it’s not working ? We haven’t heard any complain so far .. Should there be a concern ?

Looks more like four defrost, not three

We did a helicopter lift of 14 of those. Covid units. Had many blower bearings fail right away. One blower wheel blew apart. The warranty blower replacement was fun. Comes in pieces. Gooooood Times!

Yes, definitely learnt something--you sometimes have to troubleshoot the guys who came before. Thanks for sharing.

Why they don't make a discharge port with hose connection, So you can use it to test system pressure?

Can some one explain, why there is a reading in x and n. If the circuit is open. But then there is no reading when the circuit closes? Thats the one part that i dont understand. Other than that, really helpful video thanks

chrome socket on the impact is crazy. is that a 2D?

I know it had been 3y but your videos are always very well explained and professional

Have you came across a code on a Greenheck with a 4-1 code purge cord problem?

hope u have correct diagnois

Thank you very much, I am a new tech and never replaced a Henny Penny pump, your video was very helpful, God bless you and your work. You help people and make a difference

Thx Bill for sharpening my skills. Cheers 🍻

Why did they use LG compressors !!

Do you remember or did you ever find out what the pilot has pressure is supposed to be?

I appreciate the video because I'm working on the same piece of shit with the same issue.

If you look at the whole data tag you can easily tell it’s not a 4 ton, 5 ton, or 6 ton unit. Right above the two bar codes and below the Intertek logo it says “Cooling Capacity 88000”. So that makes it a 7.5 ton unit. Pause the video at 0:27 and you can plainly see it.

Froze drain or clogged or heat tape isue insulation and also refrigerant u need check charge

Thanks for sharing,very instructive ❤

Sounds like some old Bristol’s but still a lot better then the LG shit we put in today.

Bungie cord to a strong hook magnet to keep the door open. Will fit right into your bag.

Ty broski- in my 2nd year and new to refrigeration this helped a lot

Does that apply to Indoor blower too, will it hurt anything on the indoor motor because is rated to 208/230 V but it’s actually getting 240 on both power lines ?

You run service in Michigan and Ohio

That's some great trouble shooting. You are great at reading those schematics.

I've modified these types of units to become a cheap re-heat by using a humidistat to enable a relay and energize the heat strips while cooling is going to raise the discharge temp and lower the RH in the space

That is the cleanest fryer I have ever seen. I've had to use a torch to melt the grease on some of the bolts. I always put a small service cord on the pump and wire nut it back together, not code but it works for me.

Had same door thing on a very similar unit. Took a minute to figure out the chamber was monitored for pressure.

I saw this video a few years ago when I was still in HVAC school. I came back to this video again yesterday morning because I got to replace virtually the same motor on virtually the same unit yesterday. Except it was a 20 year old Carrier heat pump. Anyways, funny how I was kinda dreading this repair as I’ve never done one of these bigger 3 phase blower motors on one of these Carriers before. It was surprisingly not that difficult. I discovered that the entire plate (the one that’s about the size of the blower housing) that the motor mount plate adjuster plate (whatever it’s called) comes off, making the job a thousand times easier. And luckily for me, the factory tape holding those bolts in was still intact. And you weren’t kidding about the motor weighting about 1,700 lbs. the only difficult part of the job was roping up that heavy ass motor 40 ft up onto the roof, and trying to figure out my new belt tensioner tool that one of our controls guys gave me the day before (because he didn’t need it anymore lol).

3:13 keep going, just a few more screws and it'll fit in the dumpster! LOL