HVAC: LG MULTI V Refrigerant & Oil Acid Testing (Nu-Calgon Oil Test Kit/Qwik Check 2-Second QT2000)
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- Опубліковано 11 сер 2023
- HVAC: LG MULTI V Refrigerant & Oil Acid Testing (Nu-Calgon Oil Test Kit/Qwik Check 2-Second QT2000) #jumpermantech #hvac
QwikCheck Acid Test Kit (2 Second Acid Test):
Detects inorganic acid in 2-seconds down to 1 part per million in HVAC/R systems. Fast, accurate, and easy to use, QwikCheck provides an early warning of acid problems. The Yellow to Red color change allows you to easily and clearly communicate the need for action to the equipment owner. Works with all refrigerants and oils. Meets EPA venting regulations. For use, simply insert the valve core depressor into the center of the suction-side, vapor-service/Schrader valve while system is operating.
The concentrate of acid in refrigeration oil is expressed as an acid number in mg of KOH per gram of oil (milligrams of potassium hydroxide per gram of oil). The acid number is a measure of the amount of hydroxide solution needed to neutralize the acid in the oil. The more acid there is in the oil, the more potassium hydroxide is needed to neutralize it and, so, the higher the acid number.
Nu-Calgon Phase III Acid Test Kit:
In the Phase III test, an acid number of 0.05 mg KOH per gram of oil has been set as the maximum acceptable acid concentration in mineral oil and alkylbenzene oil. In polyol esters, the number is generally accepted as 0.16 mg. Mineral and alkylbenzene oils with an acid number less than 0.05 mg or POE’s with an acid number less than 0.16 mg are acceptable and will cause no change in the color of the test kit’s acid indicator. However, if the respective oils have an acid number greater than these limits, it will cause the acid indicator to change from purple to pink or clear indicating that the oil is contaminated.
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Hey Jumper man, I love watching your videos. I'm an LG startup tech and would like to share some info with you. Just so you know LG VRF systems can operate, on the low side, down to a low pressure of 43psi if outdoor temps are close to 5° F. Those low pressures can be normal IF other parameters are met. Like; High pressure trace in line with its high pressure target ,inverter discharge temperature in range, EEV's indoor and outdoor are in normal range (with good airflow across coils), compressors and fans operating in their range. I would advise getting an LGMV wifi module and download the free software from LG onto your laptop, that way you could see other things like oil sensors and thermistor info. Also, you can directly control ALL the IDU's, from your laptop, connected to the ODU on the roof. Let me know if you would like more info. I could send you a parameters chart. Thanks
Looks like you finally found out why they are failing. VRF can be rather hard to determine issues as they can be multi layered. Going back and trying to figure out if they were installed and commissioned right is very time consuming. I have experience with the Gen 5 LG VRF's we have a few problem sites my company installed. We kept losing compressors and no one could figure it out. Turns out airflow was never set on the ducted airhandlers and they specced high static units with large spiral duct. The additional charge for lineset lengths may not also be correct too. Our compressors were being nuked in heating these things really run hard and hot in heating mode.
Those indoor units look terrible and no doubt causing issues with the compressors.
I wish people would install the outdoor up on a platform like that around here and do all the piping out the bottom. They always pipe out the front and it makes it annoying to get the compressors out.
This building keeps on giving 😂jmt professional work
The gift that keeps on giving 😂 Thank you!!
@@JumpermanTech do you work on co2 systems and ammonia as well
Thank you so much bro. Worth following the channel. Keep it up
You're very welcome & thank you for watching/supporting 🙏🔧⚡️
you truly are phenomenal 💚😻
Thank you!💜⚡️
Great video thanks!
Nice work Jumper man.
Thank you very much!!
I just changed a compressor on one of these. 24hr vac 👍👍👍
Thats awesome. Hard work right there. Definitely need a long deep vacuum for a system like this. Thanks for watching & commenting🔧⚡️
What i have seen when working on VRV. Is when you have flood back to the compressor, that liquid pushes your oil from the compressor. Meaning, with no oil you get extremely high discharge temps. Almost in all cases, we change the discharge thermister with every compressor changout along with the inverter board. If acidity is present, we always install a liquid line drier.
Great Video. Nice Work. Good job. Thank you for sharing
Thank you very much! You're very welcome & thank you for watching/commenting. Appreciate all your support 🔧⚡️
You gotta get the owner to give you the ok to clean all those units. Wow those units are dirty.
Facts. They definitely need the cleaning a preventive maintenance program afterwards. Units are all in that condition. They have around 135 air handlers inside. No wonder there are complaints and many failures 🔧⚡️ Thanks for watching & commenting!
Get him to sign up for annual tune ups. Preventive maintenance. Great job
Despite this being SSDD, I’m finding something new to learn. Thanks for taking the time to video. I certainly appreciate these!
@briancarlisi2224 What is SSDD? Glad you're learning. You're very welcome & I appreciate you & your time🙏🔧⚡️
@@JumpermanTech SSDD… same sh*t, different day, lol
The pink chemical is phenothaline, it is pink in base, yellow in acid
A stupidly cheap source of it is mylanta gas relif tablets ❤️
Yep JM airflow restriction as you say, lovely jubbly 😆
Definitely air flow issues and liquid migration considering the entire building is in this shape. Thank you for watching & commenting!
🇺🇸👍❄️💪 nice work. Solve the problem not the symptom
Thank you!! Facts🇺🇲🔧⚡️🤙
WOW again !
Another one! Yes🔧⚡️
Scenario: You tell them how to fix the issue, they don't fix the issue, you keep coming out to replace compressors and boards...it would be gravy if it were only at ground level LOL!
Haha facts! Ground level would be amazing. Entering the building we must go down a flight of stairs so just entering the building is a nightmare with all the equipment. Gotta do what you gotta do though. New York City problems. Thanks for watching & commenting 🙏⚡️🔧 Much appreciated metal guy🤙
@@JumpermanTech Man, I am such a primadonna. All these years of ground level or one level up, I watch this east coast stuff and realize pretty quick just how spoiled I've been in TX. Great channel and great work.
Good job Jumper, I think the system is running high pressure, because the condenser coil and evaporator coil being dirty, I could be wrong, not sure.
Nice work JMT! Have you checked the system alarms? It might help to diagnose the main issue there
Thank you!! Haven't checked any alarms. Do you mean like a history of error codes? Not sure how that's done. Maybe with the LGMV tool? Appreciate the feedback 🙏
After watching another HVAC tech that lives out in California work, this whole situation makes me feel claustrophobic lol
Tell the building manager to install Daikin VRV IV H :))).
From my time in the industry its Installation and no or poor PPM maintenance that most problematic issues develop from.
This is definitely a mix of poor installation, poor service practices & no maintence for 12 years!! Everytime I cleaned a unit, they had to cut down the ceiling just to get access. It's been a ticking time bomb since day 1. Thanks for watching & commenting 🔧⚡️
Thank you for your time and chanell it's great 😃👍👍👍💯
@@jrh86 You're welcome🙏 Thank for you the kind word and time as well. Stay tuned for new videos every week⚡️
I'd always tell them pay it now or definitely pay more later
Great work Sir, May you recommend me the type of oil compressor for LG multi-v?
Are there no elevator you can use on that building?
There's an elevator but you need to walk up 2 stories to reach these units on that fire escape/staircase. Thanks for watching & commenting 🔧⚡️
Hey awsome videos bro i live here in nyc. I have a question did you went to a HVAC school ? im looking to get any training hvac related any recommendations? Any good training courses that you know of ? Would help alot. Also is there anyway to contact you through email ? I would like to buy you a nice peter luger steak lol so i could pick your brain? Also have you hear of “Boland” training on VRF ?
Can you do a video of the car right now?😃
Ill make a video on that! Thanks for the idea 💡
Are you the owner of the hvac company ? If you are that’s dope and the customer never listen especially when system go off on high head pressure cuz they don’t want to pay to get pm done amh
Man those units are filthy.
Facts. The entire building is in this shape. We are talking about 135 air handlers 🤯
@@JumpermanTech that’s insane hopefully they approve you for the bid 💪🏻 😂
Have a come to Jesus meeting with the property manager or owner regarding the unit air handlers being in desperate need of cleaning. They were terrible 😮
That piping looks very crappy. If they don't clean the indoor units, the compressor is going to be killed again.
LG should be banned from making units.
Haha seriously!
LG is the worst VRF ever made, and since they are cheaper than Daikin and Mitsubishi so they get installed by non-professional mom-and-pop shops that don’t send techs to classes to learn how to run nitrogen and install them properly.
In Vietnam we usually install Daikin VRV IV & Panasonic FSV VRF 😎😎😎.