HVACR Emergency: Commercial Refrigeration Rack System Nightmare (Refrigerator Not Cooling)

Рет қаралды 9,739

3 ай бұрын

HVACR Emergency: Commercial Refrigeration Rack System Nightmare (Refrigerator Not Cooling) Refrigeration Rack System Troubleshooting / Refrigeration Rack System Training / Refrigeration Rack System Keeps Tripping Breaker / Refrigeration Rack System Not Getting Cold / HVACR Service Call: Commercial Wine Cooler Not Cooling (Breaker Keeps Tripping) Water Source Refrigerator With High Head Pressure Tripping On Pressure Control / HVAC Troubleshooting / HVACR Troubleshooting / Remote Condenser / Split System Refrigerator / Refrigerator Compressor Not Starting / Refrigerator Compressor Not Working / Refrigerator Not Cooling / Refrigerator Not Working / Refrigerator Not Blowing Cold Air / Refrigerator High Side Pressure Too High / Commercial Refrigeration / Commercial Refrigerator / Cooler Repair / Cooler Troubleshooting / Beer Cooler Repair / Wine Cooler Repair / Walk In Refrigerator / Walk In Freezer / Refrigerator High Head Pressure / Refrigerator High Pressure Control / Refrigerator Low Pressure Control / Refrigerator Dual Pressure Control /Refrigeration Emergency Service Call (Walk In Refrigerator Not Cooling/Walk In Refrigerator Not Working) Beer Cooler Not Working/Compressor Not Starting/Working/How To Check Compressor/How To Check Run Capacitor/How To Check Start Capacitor/Commercial Refrigeration/Walk In Cooler Troubleshooting #HVAC #HVACR #REFRIGERATION #JUMPERMANTECH
A rack refrigeration system has multiple compressors. They all share a common source of refrigerant. All these compressors work together to create a cooling effect. These systems can maintain different temperatures in different cases.
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Пікірлер: 68

@chrissmith513 3 ай бұрын

Yikes that's not to fun !!! I hope you go back and clean of those cooling fins 😇😇😇

@JumpermanTech 3 ай бұрын

Very interesting call late at night. We did go back and pressure washed the coil and made some upgrades. Follow up video comes out tomorrow😎 Thanks for watching! 🔧⚡️

@scottmaz4063 3 ай бұрын

Great job cleaning the coil Zack

@mxslick50 3 ай бұрын

Nope, the rack breaker and the panel breaker being the same amp rating (but different brands) will trip at slightly different times, or together as in the case of the short you found here. Usually breakers are coordinated so that the breaker in the rack will always trip first, and the one in the panel will delay slightly to avoid having to reset both. Another thing that affects breakers is how many times they have tripped then reset due to short circuits. A short will slightly (or seriously) burn breaker contacts every time, and eventually raise the contact resistance so high that even under light or normal loads, they will overheat and cause delayed tripping. Overloads have much less of a bad effect, but can wear the breaker out mechanically. Some EE's will specify a higher amperage feeder to the rack panel (in this case, say 50 or 60 amps) to allow for compressor inrush and to avoid a simultaneous trip of both breakers in cases like this. That also leaves room for upgrading the rack or adding on to it.

@mansourramzey7711 3 ай бұрын

Tks for updating the work on the same video. It is good to know you fixed it right as always.

@Kevin-wj4ed 3 ай бұрын

Looks like no pm this what happens!!!!!!!!!!!!

@JumpermanTech 3 ай бұрын

That is correct. No PM & it is what happens. We offered them a maintenance contract for the refrigeration & air conditioning a year ago but nothing ever took place. Now they are considering it. We will see what happens. Thanks for watching! 🔧⚡️

@joshperez7731 3 ай бұрын

Love your videos jumper man! I learn more from you than i do my own journeyman. Thanks for your uploads!

@Eddy63 3 ай бұрын

Nice job JMT ... Good job finding that bad breaker ... Thx

@viper22304 3 ай бұрын

Love your videos. Awesome work. Thanks for sharing.

@scottmaz4063 3 ай бұрын

The city never sleeps brother.

@1982uno 2 ай бұрын

Thanks for the video😊

@ronnym1977 3 ай бұрын

With as much as you know about electrical, you have the skills to replace that 3 phase breaker at the main panel. $$$$$$$$$!

@mikewood8527 3 ай бұрын

That's exactly what I would of done, I'm not calling an electrician for something like that

@geogreandraws1053 5 күн бұрын

@@mikewood8527 he probably doesnt have those big breakers in truck.

@gekkedirkie 3 ай бұрын

always fun to go out of the shower, and the phone rings....

@JoeLiberalism Ай бұрын

LoL .....for me it's right when my head hits the pillow.

@kennethlobo4420 3 ай бұрын

Thanks for this video,

@joshuasmith973 3 ай бұрын

7:49. JMan.... he sound like me when I first started bingo building maintenance when he asked if you had anymore in the truck. Lmao. Leave me a couple of them when your done. 😂😂😂 Leave me a

@poohbear4130 3 ай бұрын

It’s a beautiful thing!

@genewheeler6320 3 ай бұрын

Good job as usuall bro. I retired early. You make me miss maintenance work

@zekenzy6486 3 ай бұрын

Great Video. Thank you for sharing. Have a nice weekend. What is meter you're using to check compressor ?

@russkiy_3 Ай бұрын

Good shit bruv.

@JumpermanTech Ай бұрын

Spacial Russkiy🤙🔧⚡️ Haha thanks for watching! 🙏

@leebyrne2647 3 ай бұрын

I like watching your stuff, but as an industrial electrician, I am constantly cringing a little.😅

@andrewamaya8109 3 ай бұрын

Why

@guy872 3 ай бұрын

I don't know why but hotels never seem to want to do PM. Then when it breaks and I say if this was looked at a year ago you could have saved thousands of dollars. Would you like to setup a PM contract? They say we will wait and see. I usually tell them I don't care if they do PM or not, not trying to hard sell them. Its funny, I make more money selling after hours service calls and loading up the parts canon to fix years of neglect.

@internetpointsbank 3 ай бұрын

Usually the owner isnt working there and the employees are getting paid so much.

@ryans413 2 ай бұрын

When a breaker won’t stay in the on position it’s a faulty breaker.

@maheradous9257 3 ай бұрын

Good 👍

@moholie Ай бұрын

💯

@robbystuckert8007 3 ай бұрын

Were those numbers you were reading voltage when you were testing the prongs on the compressors? Sorry just trying to understand more getting into refrigeration

@dillanclark8496 3 ай бұрын

Use a shop vac for the condenser, makes it a lot easier getting that mess off the coils. I had a brush and haven’t used it since getting the shop vac, awesome video keep it up!

@ErickHernandez93 3 ай бұрын

Seems main breaker welded shut both legs that were rubbing

@thesilentonevictor 3 ай бұрын

Wire nuts that are not necessary smh jmt NY loves your skillset i must agree

@Gamemode0127 3 ай бұрын

wow the condenser coil is totally block. how long that unit not servicing :)

@steveg8337 3 ай бұрын

You need a hew ajative...

@scottmaz4063 3 ай бұрын

JMT TO THE RESCUE CHA CHING OF A CALL.

@godsaveamerica616 3 ай бұрын

Typical Breakdown maintenance.

@ILoveKittys78 3 ай бұрын

😻💚💜💚

@JumpermanTech 3 ай бұрын

💜🔧⚡️

@acecreed21 3 ай бұрын

Holy fuck that coil is insane, the chief of that building should be ashamed of himself

@Akronkangaroo 2 ай бұрын

Loose breakers mean bad breaker

@JumpermanTech 2 ай бұрын

Thank you for your input. Makes sense. Thanks for watching! 🔧⚡️

@johnd9111 2 ай бұрын

That's what PM's are for.

@ronnym1977 3 ай бұрын

Is that contactor you replaced a pathway or a load?

@JumpermanTech 3 ай бұрын

That contactor energizes one of the compressors so it has a load. Not sure exactly what you mean. Thanks for watching! 🔧⚡️

@ronnym1977 3 ай бұрын

@@JumpermanTech Oh, okay. Well a pathway is like a light switch, it doesn't carry a load, it's an energized pathway, the load would be the fixture the bulb is attached to, or fart fan, ceiling fan, etc.

@AA-by7xc 3 ай бұрын

@@ronnym1977I suppose a contactor is a very light load as energy is consumed by the coil.

@D3ltaM1cron 3 ай бұрын

Considered loads because they have a coil

@ronnym1977 3 ай бұрын

@@AA-by7xc Oh, okay!

@rafaelgomez4304 3 ай бұрын

24v coil?

@mxslick50 3 ай бұрын

Yep, 24 volts is a common control voltage in HVAC, and in the case of 480/277 compressors and fans 120vac is used for control.

@rafaelgomez4304 3 ай бұрын

@mxslick50 I've never encountered 24v for refrigeration racks when I did HVACR. Not saying it's not used but in 7yrs of refrigeration I never used 24v coil contractors for the refrigeration side.

@mxslick50 3 ай бұрын

@@rafaelgomez4304 It seems to be a lot more common in residential/commercial forced air units for sure. I did a lot of work with Trane commercial HVAC and the controls were 24v. From all the relays I saw in this rack, I can see why they did 24v, as it is easier to design controls and run remote thermostats/sensors when using 24v controls. (As you probably already know, any 120v control wiring has to be treated just like power wiring, but 24v controls can use Class 3 cabling and methods.)

@rafaelgomez4304 3 ай бұрын

@mxslick50 yeah on the hvac side, 24v is pretty much all I saw. But on the refrigeration side I think I only saw it once.

@oldblueaccord2629 3 ай бұрын

24 common inHVAC setups.

@jerzyaheardz6939 3 ай бұрын

Megging a compressor that is of scroll design is not an accurate way of testing insulation integrity. Just saying. Reciprocating yes. Scroll no.

@LC-qi5ff 3 ай бұрын

Why is that?

@topher8634 3 ай бұрын

Most branch circuit breakers are 10K AIC (Amps Interruption Capacity or Current) that's the short circuit rating. The overload is the number on the handle. So if both breakers have the same short circuit rating, then either or both may trip. If I'm installing a sub panel, I try to find a main breaker that has a higher short circuit rating, like 22K AIC, so as not to take out a whole panel, but even that's not a guarantee. Shorts are violent and there's a whole lot of current the transformer will let through and a lot of the time it's just a battle of the breakers of which will trip first.