REFRIGERATION PUMP DOWN AND HOW TO CHANGEOVER COMPRESSOR?

[@mahmoodhassan4537]

The best ETO on the planet 👌

[@antonioreyes7476]

Another learning from my favorite TH-cam channel. Mabuhay po kayo leckyjake.

[@scorpiomarine-electrocutio7460]

Goodjob.this is very informative sir lecky.

[@dennisabad7862]

full of information
thank you sir for the free knowledge.

[@akarl6578]

You are the best. Thank you from Greece

[@BernieQuinia-fl3ed]

T.y sir to gud explaination.gud bless

[@dennisdumale5599]

Thank you so much sir jake for these video. More power sir. And keep safe always. God bless to u & to ur famly🙏

[@eduardcalong796]

Thank you for this knowledge master lecky jake.. I had learn a lot.

[@princefernandes5789]

Excellent job 👏👏👏🛠🔧🛠🔨🔧 good explanation 😎😎😎😎

[@Tutorial_Ref_Aircon_more]

Thank u for sharing sir

[@leckyjake]

Thank you for watching

[@judebrosas4663]

Thank you sir this is a big help to me...thank you❤

[@fenflyer]

Thanks for great videos 👍
Good video on twin compressor pump down 👍can you do video on inverter scroll refrigeration compressors , please 👍
I only worked on old twin 120 KW Sabroe piston compressors systems Amonia and R22 etc 😑
Thanks for great videos 👍

[@khuatamipatheihhuaithulehl4769]

Good

[@mahboobKhan-uy7sm]

❤❤❤❤❤

[@yousefhaeiri360]

Hi Lecky,thanks a lot please make an introduction video about the Boilers

[@willrobbinson1]

boilers??? anyway like vid thanx

[@yousefhaeiri360]

Marine Auxiliary boilers

[@pedrojardim1163]

Thanks for the very helpful and very good explanation 👍

[@arielcunanan4994]

Excellent tutorials

[@markvillaspin6643]

Thank you Lect God Bless

[@LinkWrayisGod]

Nice one Lecky! Greetings from Spain.

[@edwardjackson8183]

😱🤯.. you blew my mind

[@paologringoescalante6916]

Maraming salamat po. ❤

[@akarshanilkumar3461]

❤

[@kiageungwirengrana5374]

Many thanks my bro

[@Winstly]

husay sir!!!

[@aaronjettroehidalgo534]

Thank you sir!

[@joseenricoaguila5218]

thank you

[@leckyjake]

Thank you for watching

[@babaolowo35]

Thanks 👍

[@rb1m426]

Present mr. Secretary 😊 about sa plc naman Sec.

[@leckyjake]

Thank you

[@syedbasheer8210]

👍👍👍

[@leckyjake]

Thanks

[@dhruvrajchauhan4126]

Thank you

[@leckyjake]

thank you for watching

[@cck1496]

Thanks but why do we need the system to be pumped down? Why we can't keep one compressor off (rather than isolating it)?
Thanks.

[@leckyjake]

normally the changeover is being done every month, you do not want any refrigerant in the line for the non running compressos as in will condense in the latter.you do not want liquid state refrierant to enter into your compressor.

[@man15h]

Hello sir can you please suggest a book for understanding single line diagram and learn about switch gear and Power systems protection, relay setting and fault current calculation

[@markpaulofacun]

👍

[@kuldeepsingh8486]

Thank you sir can you make video for same A.C change over . And can make video on main engine course in simple way.

[@leckyjake]

Will keep on the list

[@jishnur9770]

Hi Lecky, Frst of all thank you for your wonderful easy explanation on each of your video. Im having a trouble on my ushio ref system, which is no 1 compressor is getting frosted if i let the system run. Now i changed over to no:2 not pumping down , but by charging no 2.
What may be the probable reasons for the frosting, no fluctuation in suction and discharge pressure. R417A was charged on no:1 last week.

[@leckyjake]

i always depend on the pressures. but most of the times if you have frost in the suction you might have an overcharged of refrigerant

[@jishnur9770]

Thank you and hats off for the dedication towards sharing your experience. Always waiting for your videos.

[@stonecold1553]

Hi just want to share my insight. The trouble is your compressor is getting frosted. One main reason, the refrigerant on the suction line all the way to the compressor is not in vapor/gas form. A lot of reason way this happened, most notorious one is overcharge, malfunctioning expansion device, dirty/clogged evaporator coil, and etc. But base on the scenario you have stated it is more likely overcharge.

[@jrahul8136]

Please share how to trace electrical wiring diagrams...for example motor and starters circuit

[@leckyjake]

I normally include the tracing on my troubleshooting videos

[@amoscolod1519]

a very good explanation sir. you said that we need to run the compressor two times so if during the first time the low pressure switch activates how can we restart again the compressor or how will the compressor start again? will the pressure increase itself due to remaining refrigerant on the system?

[@ivanfmartinezm]

You can force to start pushing manualy the main contactor from the compressor about 3 or 5 seconds.

[@manzillegal1]

Leckyjake hello leck could you also make video of procedure of vaccum of the system too weather Aircon or reefer thanku you ver much in advance🙏

[@Tech-NO-City]

Next time please add "What not to do" I learn more by learning from others mistakes.

[@bt9604]

Sir, plz do a video on insulated neutral system in ship 🙏🏻

[@erwinhutapea2091]

Thank you so much sir .. sir I will ask about high pressure. if vegetable ekspnsi V/v open high pressure more up until 1.8 and then direct trip .. iwhat problem sir?

[@torohdelapan8352]

Please give education how to change oil the provision ref machine..thx

[@studywithssr338]

Sir please video on circuit diagram reading

[@antenehberhanu4467]

My dear what is the problem of freezer room start and stop again and again even if refrigrant gas is infe amount in the system

[@JerinMathew-rr6qs]

Why crack open for suction side valve ??

[@rafaelhijara9534]

So the switch of compressor is off already before the closing the service valve? Am i right?

[@thantzinaung6650]

Sir, When you were pumping down the condenser of unit 1, the unit 1 was running in auto mode ?

[@teslapower220]

Haven't reefer containers made these systems obsolete?

[@nelsonramirez7586]

Hello sir.. i just ask if you need to deactivate first or set some setting in the control to not activate the pressure switches while doing pump down??? Thank you in advance

[@leckyjake]

good question, if the suction pressure switch is more than zero bar/MPa then adjust it to zero.

[@nelsonramirez7586]

@@leckyjake Thank you sir.. God bless you always and takecare... one of your subscriber here 😊

[@freemind6231]

sir. acceptable npoba yung negative 17 s meat storage? gusto kc nila negative 20 medyo naggalangan ako galawin . tnx

[@elecbaskogpogi2086]

Good day lec. I have a question I experience during pumping down discharge pressure is increasing until high pressure trip activated and suction pressure is not decreasing hard to activate the low pressure switch. What is the cause?
For that reason I cannot properly pump down and changeover to another one compressor.
Hope it will answer Thank you in advance.

[@leckyjake]

first, the cooling should still be present during pump down.
you can adjust the setting of your discharge pressure switch as per your manual max limit.
3rd. check for leak test on your suction side. the pressures you may be getting is the air that is goibg through your system

[@elecbaskogpogi2086]

@@leckyjake thank you. Have a good day ahead.

[@royceroneilramos]

Ano po yung dahilan bakit need munang naka crack open lang ang service valve ng suction side sa compressor 2? Thank you idol 🙂

[@joalpsengineman4717]

Sir asan maganda .mag training sa pilipinas about electrical and reefer dto ako sa US as a Merchant Marine sa APL mahal ang training dto nasa $20k per training ng reefer at electrician and it takes 6 months

[@bhongtorbs5685]

Crack open lng ba talaga yan sir yong suction normaly? Or i full open mo rin yan.

[@davidosei9560]

Hello sir , I’m having a bachelors degree in Electrical and Electronic engineering and I will like to work on board .
What are the steps I to go through before getting a seagoing job

[@leckyjake]

It actually depends on your country if you are asking about requirements

[@yaswanthsri2524]

u can do course called ETO

[@ninogonzales4621]

Sir leckyjake patulong naman yong fish room namin ayaw mag reach sa -18 ,hanggan-13 lang sya. Palaging nakabukas yong expansion valve kaya nag ice na yong evaporator. Kahit nag depros na kami ayaw pa din talaga tumaas . Patulong po. Salamat idol

[@adepojuadewale1567]

please can u send this unit diagram

[@asifraza1663]

I want to join criuse line i have 5 year experience in Dubai can you help me

[@kaden2985]

ρгό𝔪σŞｍ

[@randygalang4994]

Chinese ka sir?

[@leckyjake]

noypi ako

[@randygalang4994]

@@leckyjake Salamat sir....