Awesome, another well done job. As a still inexperienced Engineer, I would really like to sail with you. Im sure that I would learn a lot. And just having really good colleagues like you would for sure keep one motivated to constantly improve :)
I can be wrong, but Superheat is the amount of heat added to a vapor above its boiling point. As a result, it shows the amount of heat your Freon has gathered over time. This means that the evaporator is frozen because you have too LOW superheat, but not too high! Too much Freon goes through txv and in the video you are reducing the quantity of Freon and that is why increasing superheat. Am I correct, colleagues?
Parehong tama ang explanation ninyo sir jake and Mr. bugayo pero ang tingin ko ang problema nasa spring tension,dahil na rin sa sobrang ice build up umabot hangang feeler bulb.kaya kinulang nang bukas ang expansion valve .yong pag adjust ni sir jake counterclockwise ay nagbalik sa tamang opening uli yong txv.hope nakatulong sa pag analyze nang problema.
isn't the TXV supposed to automatically adjust the amount of refrigerant passing through by sensing the refrigerant temperature at the output of the evaporator coil?
Very good video. For defrosting vegetable room better disconnect power supply for solenoid valve and keep running fan for 2-3 hours- also very good way.
That's why there is a method called ''DEFROSTING'' (1) Stillstand - Shutting the system till the ice melts (2) Let the fan only run in the evaporator (3) Heating rod in the evaporator. (4) High-Pressure hot gas flowing pipe from the compressor directly to the evaporator. All the above-mentioned processes apart from the 3, are automated and have time intervals. You adjusted the TEV by turning counterclockwise. This means you opened the valve more. This means more refrigerant is sprayed in the evaporator. When more refrigerant is sprayed in the evaporator, it gets cooked more slowly ( turns to gas form more slowly). This will result in the refrigerant leaving the evaporator in a semi-liquid state. This will result in very low SUPER HEAT. I don't think you have solved the problem. The temperature in the vegetable room seems to return back to normal because after you cleaned the ice block from the evaporator the fan is circulating the air in the room properly. But soon ice block in going to form in the evaporator and the same problem returns back. Instead of adjusting the TEV, you should have checked the DEFROSTING system's functionality.
Interesting vid! I work on a lot of really old systems, have seen a few TXV's where the inlet filter has become blocked with dirt. Also have had a few where systems have been converted from CFC's to HFC's where the TXV has got wax in it which also blocks the flow.
If you have to adjust the TXV to solve an issue that wasn't there before with similar settings I would say the TXV is faulty or you possibly miss something else (blockage around inlet TXV?) and are solving a problem by offsetting your TXV. (P.S. I sailed on he same vessel as you in 2009 - Maersk Salalah.)
Should you check for superheat with a thermometer and gauge pressure prior to adjusting valve? I hope so. The room doesn’t look like a new installation. Possibly worth replacing the TXV completely if it isn’t functioning ok
When txv supplies more refrigerant ice will form on evaporator right .? If supply refrigerant too small how ice will form. Might be temperature not in level. Okay
Great video as always! Could you perhaps sometime in the future make a video on how to perform safety checks for the ME, Diesel GE, Emergency GE and Boiler?
Hi my friend Leckyjake, I'm speaking from Brazil, I'm trying to find out about the Alj281 from the Daikin container.. Other than the SMV valve, the SMV coil, and the solenoid coils, what else can cause this alarm?
thank you for ur time to show us problems of recarding ac and provision systems on board. the line after the expansion valve can be icy but when the TEV is icy this means that a sudden drop of pressure happens before the TEV which can be caused if the TEV filter is dirty.
Hey bro just have a question right above the TXV all the way to the evaporator was filled with ice what you think causing it? it’s a little condensing unit..thanks
Dear Lecki Jake, if there is too little refrigerant in the evap. coil, it will get excessively heated up ( high superheat ), resulting in sensing bulb opening the txv to admit more refrigerant to the evap. coil, however you state that there is too little ref charge in evap.coil due to high superheat - could you please clarify this? thanks
Hello mr lecky. I am also electrician of the ships. I want to learning with you about cold storage no cool because having ice on expansion valve. I ask to you what cause this ? Please help me
THAT'S WHY YOU SHOULD ALWAYS USE EVAPORATORS WITH HEAT ELEMENT AND TIMER FOR DEFROST NOT ONLY FOR TEMPERATURES BELOW ZERO BUT ALSO FOR TEMPERATURE ABOVE ZERO WITH HIGH OR LOW HUMIDITY IN THE COLD ROOM. AND YOU WILL NOT SEE FOR EVER ICE IN THE FINS OF YOUR EVAPORATORS. NEVER TOUCH/TRY TO ADJUST THE EXPANSION VALVE BECAUSE IT IS FACTORY ADJUSTED WITH THE CORRECT SUPER HEAT. CHOOSE THE CORRECT ORIFICE. KEEP THIS ADVICE FOR THE FUTURE. THANKS FOR READING 🇬🇷
THAT'S WHY WHEN THE DOOR IS OPEN, IT'S SHOULD GIVE THE DOOR SWITCH, THE ORDER TO CLOSE THE SOLENOID VALVE AND FANS TO STOP. IT DEPEND FROM THE ORDERS YOU GIVE TO THE ELECTRICAL PANEL.
@@tsalikistsalikis3118 That still isnt going to get rid of the high humidty air introduced each time room is accessed. Need after market defrost heating strips installed with timer to initiate and shut off solenoid and fan.
Hello lecky have a nice day Actually I am on the same ship which you have done that vedio regarding the ice formation in veg room. I have adjusted the TXV but still same the ice formation please suggest what to do
Actually you need not to adjust expansion since it is a factory set. Adjusting is only be done in case of emergency. The icing of of evaporator not clearly emphasising the major cause.There is one big reason why icing occurs immediately. It is always the fault when malfunction of one component but pointing to expansion valve is really not the real thing at first.
Thanks brother for this vedio. I want to know when all the three rooms are running evaporator outlet line is freezing up, but after switching off two units its not. what do you this will be reason. Checked refrigerant charge is ok.
Hello sir Lecky ano po Kaya problem ng reefer Namin Hanggang _4.0 lang yaw tumaas high pressure nya ok Naman low pressure bagsak Ang pressure napansin ko yong expansion valve ay nag yeyo na ano po dapat. Echeck
Sir leckyjake, how about meat room is in range,veg room is in range tapos fish room is in range after few days d na mameet ng fish room ang range ng temp sir panu po kaya un?thanks po
If its after the filter ( the side that goes in the compressor suction port ) that means you've got a clogged suction filter, and maybe you are flooding back the compressor but maybe not, only superheat could tell you if you've evaporated all of the refrigerant or if there is still some trapped in liquid state
thank you sir for all of this informations, i'm studying mechanical eng and i hope you can suggest some hvac books to learn more about fixing problems in hvac sys . thank u again .
why not use a constant pressure valve to hold a fixed temperature? with that you can hold a exact temperature just above 0 without any chance of freezing. its the standard for flower storage for example.
@@leckyjake yes, i understand that. i just wonder why they didnt use such a valve. is it just for parts commonality or just a engineer that assumes everything always works perfectly all the time?
The temperature for the rooms should be variable, from negative 22 degrees Celsius to positive 22 deg Celsius. In this way they can use for various reasons.
The best channel for all the electrical works onboard a vessel.
salamat kabaro
You are explaining like very cool and with patience ☺️
Awesome, another well done job.
As a still inexperienced Engineer, I would really like to sail with you. Im sure that I would learn a lot. And just having really good colleagues like you would for sure keep one motivated to constantly improve :)
thank you for your support
No I go with him... 😠
Thanks so much for your sharing brother.
God bless you teacher
Thank you master.God bless you.
thank you
I totally agree with u and you are really amazing 👏
I can be wrong, but Superheat is the amount of heat added to a vapor above its boiling point. As a result, it shows the amount of heat your Freon has gathered over time.
This means that the evaporator is frozen because you have too LOW superheat, but not too high! Too much Freon goes through txv and in the video you are reducing the quantity of Freon and that is why increasing superheat. Am I correct, colleagues?
Parehong tama ang explanation ninyo sir jake and Mr. bugayo pero ang tingin ko ang problema nasa spring tension,dahil na rin sa sobrang ice build up umabot hangang feeler bulb.kaya kinulang nang bukas ang expansion valve .yong pag adjust ni sir jake counterclockwise ay nagbalik sa tamang opening uli yong txv.hope nakatulong sa pag analyze nang problema.
🎉
isn't the TXV supposed to automatically adjust the amount of refrigerant passing through by sensing the refrigerant temperature at the output of the evaporator coil?
Very Informative video sir! thanks for sharing
Very good video. For defrosting vegetable room better disconnect power supply for solenoid valve and keep running fan for 2-3 hours- also very good way.
And temp.will fall down more than it should
That's why there is a method called ''DEFROSTING''
(1) Stillstand - Shutting the system till the ice melts
(2) Let the fan only run in the evaporator
(3) Heating rod in the evaporator.
(4) High-Pressure hot gas flowing pipe from the compressor directly to the evaporator.
All the above-mentioned processes apart from the 3, are automated and have time intervals.
You adjusted the TEV by turning counterclockwise. This means you opened the valve more. This means more refrigerant is sprayed in the evaporator. When more refrigerant is sprayed in the evaporator, it gets cooked more slowly ( turns to gas form more slowly). This will result in the refrigerant leaving the evaporator in a semi-liquid state. This will result in very low SUPER HEAT.
I don't think you have solved the problem.
The temperature in the vegetable room seems to return back to normal because after you cleaned the ice block from the evaporator the fan is circulating the air in the room properly. But soon ice block in going to form in the evaporator and the same problem returns back.
Instead of adjusting the TEV, you should have checked the DEFROSTING system's functionality.
It has no Dfos system....
Also, liquid leaving evap will "slug" compressor
I hope you are the top paid sparks in Maersk. Such a range of skills.
Interesting vid!
I work on a lot of really old systems, have seen a few TXV's where the inlet filter has become blocked with dirt. Also have had a few where systems have been converted from CFC's to HFC's where the TXV has got wax in it which also blocks the flow.
thanks
yes it is probably clogged or faulty txv but this works fine for temporary fix
If you have to adjust the TXV to solve an issue that wasn't there before with similar settings I would say the TXV is faulty or you possibly miss something else (blockage around inlet TXV?) and are solving a problem by offsetting your TXV. (P.S. I sailed on he same vessel as you in 2009 - Maersk Salalah.)
Should you check for superheat with a thermometer and gauge pressure prior to adjusting valve? I hope so.
The room doesn’t look like a new installation. Possibly worth replacing the TXV completely if it isn’t functioning ok
Can't find a parts house in the middle of the Atlantic Ocean 😮😮😮😮
@@davidsanders6957 isn’t there a refrigeration wholesale down just off Bedrock Road? 🤪
Please do video on refrigerator cycle system.
When txv supplies more refrigerant ice will form on evaporator right .?
If supply refrigerant too small how ice will form.
Might be temperature not in level. Okay
Great video as always! Could you perhaps sometime in the future make a video on how to perform safety checks for the ME, Diesel GE, Emergency GE and Boiler?
currently editing video regarding previous boiler trouble
Hi my friend Leckyjake, I'm speaking from Brazil, I'm trying to find out about the Alj281 from the Daikin container.. Other than the SMV valve, the SMV coil, and the solenoid coils, what else can cause this alarm?
thank you for ur time to show us problems of recarding ac and provision systems on board. the line after the expansion valve can be icy but when the TEV is icy this means that a sudden drop of pressure happens before the TEV which can be caused if the TEV filter is dirty.
sir thank you for the video..
Thanks 👍
Hey bro just have a question right above the TXV all the way to the evaporator was filled with ice what you think causing it? it’s a little condensing unit..thanks
Dear Lecki Jake, if there is too little refrigerant in the evap. coil, it will get excessively heated up ( high superheat ), resulting in sensing bulb opening the txv to admit more refrigerant to the evap. coil, however you state that there is too little ref charge in evap.coil due to high superheat - could you please clarify this? thanks
Hello mr lecky. I am also electrician of the ships. I want to learning with you about cold storage no cool because having ice on expansion valve. I ask to you what cause this ? Please help me
Rodriguez Frank Gonzalez Michael Smith Helen
why back pressure valve is provided in veg room?
THAT'S WHY YOU SHOULD ALWAYS USE EVAPORATORS WITH HEAT ELEMENT AND TIMER FOR DEFROST NOT ONLY FOR TEMPERATURES BELOW ZERO BUT ALSO FOR TEMPERATURE ABOVE ZERO WITH HIGH OR LOW HUMIDITY IN THE COLD ROOM.
AND YOU WILL NOT SEE FOR EVER ICE IN THE FINS OF YOUR EVAPORATORS.
NEVER TOUCH/TRY TO ADJUST THE EXPANSION VALVE BECAUSE IT IS FACTORY ADJUSTED WITH THE CORRECT SUPER HEAT.
CHOOSE THE CORRECT ORIFICE.
KEEP THIS ADVICE FOR THE FUTURE.
THANKS FOR READING 🇬🇷
Stewards dept. leaving doors open all the time. I cant believe that system came without defrost heaters..
@@officerkrupke4966 YOUR OPINION Sir.
THAT'S WHY WHEN THE DOOR IS OPEN,
IT'S SHOULD GIVE THE DOOR SWITCH,
THE ORDER TO CLOSE THE SOLENOID VALVE AND FANS TO STOP.
IT DEPEND FROM THE ORDERS YOU GIVE TO THE ELECTRICAL PANEL.
@@tsalikistsalikis3118 That still isnt going to get rid of the high humidty air introduced each time room is accessed. Need after market defrost heating strips installed with timer to initiate and shut off solenoid and fan.
@@officerkrupke4966 DID YOU READ MY LAST COMMENT ?
I THINK YOU AGREE WITH ME.
SAME SENSE WITH DEFERENT WORDS.
Very well explanation done. Thanks 🙏
Good video , l have a question why the line of the line low side , is getting a little frosty, on a walk in freezer
You the man !
How about walk in freezee sir icy on expansion valve,
Good day sir what the issue the TXV is cold.. but indoor is not cold
fly high lodz rest in peace lodz
Thank you sir
thanks for watching
Great Video!!! Thank you for sharing.💯💯
ser paano kng ice yung evarotor my tendisi ba expansion valve ang problema
Hello lecky have a nice day
Actually I am on the same ship which you have done that vedio regarding the ice formation in veg room. I have adjusted the TXV but still same the ice formation please suggest what to do
How to contact you personally
Thank you sir for sharing wonderful knowledge.
Thanks
Good
Johnson Frank Anderson Maria Lewis Sharon
Which ac is it
Thankyou for this video sir.
Nice 👍👍 Sir 🙏 I have good learned for your discussion about the refrigeration thank you so much Sir👏👏👏👍👍👍
Rip sir lecky laki tulong talaga mga video mo 😊
Great explanation, btw sir you are RAC TEHC.?
I am an Electro Technical Officer onboard a ship
hey lecky ...how to apply to your company ...i am HVAC/RAC TECH. ..6 years experience
Good job bro 👍👍👍
Actually you need not to adjust expansion since it is a factory set. Adjusting is only be done in case of emergency. The icing of of evaporator not clearly emphasising the major cause.There is one big reason why icing occurs immediately. It is always the fault when malfunction of one component but pointing to expansion valve is really not the real thing at first.
Thanks brother for this vedio.
I want to know when all the three rooms are running evaporator outlet line is freezing up, but after switching off two units its not. what do you this will be reason. Checked refrigerant charge is ok.
Check first superheat, then you adjust accordingly.
Interesting lessons are there,I would like these trouble shooting of machineries,Thank you sir
same trouble with my deep freeze.. but the trouble is happen in fish compartment.. are the solution is same like this video? hope u reply sir
big no sir,that valves is factory seated nothing to adjust check your control,fan blower and also refrigerant charge.
and yet after doing it the unit becomes ok
Yeah but in few days you see
that video was already from last year and the system still in good running condition up to now
Txv already set the company when you buy if thers have issue need to be replace..
I have a question what is the problem why have ice in met room and fish room
Valve looks like there is a restriction. Also the type of frost build up on coil indicates lack of defrost and high humidity entering walk-in box
Nice video, well done buddy.
RIP leckyjake
mabuti master hindi nasisira yung fan motor nyo pag binabasa nyo yung evaporator
Hello sir Lecky ano po Kaya problem ng reefer Namin Hanggang _4.0 lang yaw tumaas high pressure nya ok Naman low pressure bagsak Ang pressure napansin ko yong expansion valve ay nag yeyo na ano po dapat. Echeck
rest and peace sir
Good evening bro
very informative video, thanks for sharing ideas on how to fix this kind of trouble on the reefer machine.
thank you for the support
What to do with electronic expansion valve, sir can you please suggest me
Your all videos are very useful.Please add more videos of reefer container issues
Some reson ice frosting evaprater fan speed or not working
So you increase the pressure on the txv is that right
need a hot gas bypass for the vegetable room system
Sir leckyjake, how about meat room is in range,veg room is in range tapos fish room is in range after few days d na mameet ng fish room ang range ng temp sir panu po kaya un?thanks po
Thanks for the video... expecting more videos on refrigeration and AC...
Very well made. Thank you... Explained a lot
Sir Jake how to adjust thermostat meat room
Very helpful to other sir idol
Sometimes ice on evaporator is also a sign of starving refrigerant.
Air conditioner & refrigerator work Never ending to learn to new work
i thought this vessel made at china hahaha
Sir please explain about superheat please
Nice video, thanks for posting!
Thanks a lot Jake
Thanks for watching
sir can i get the diagram?
Very good knowledge form video.
Very useful 👍
thank you for watching
Sao nhìn anh giống người Việt thế
Thank you and good luck buddy 👍
You have on line clases ?
Good explanation
Hi. What might be the cause of ice formation on the suction filter line of provision refrigeration compressor?
If its after the filter ( the side that goes in the compressor suction port ) that means you've got a clogged suction filter, and maybe you are flooding back the compressor but maybe not, only superheat could tell you if you've evaporated all of the refrigerant or if there is still some trapped in liquid state
Solid idol 👍 dami ko na natutunan kahit d pa ako nakapag barko 😁
How are you bro? Where you from
I liked this Video 👍👍👍💯
Very nice, enjoy your posts
Terima kasih sudah berbagi pengetahuan & pengalaman anda dalam bekerja,,video anda sangatlah bagus dan sangat penuh dengan ilmu pengetahuan.
Kung Fu
Very good information nice job
Thank you, leck!😊
thank you sir for all of this informations, i'm studying mechanical eng and i hope you can suggest some hvac books to learn more about fixing problems in hvac sys . thank u again .
School of hard knocks
why not use a constant pressure valve to hold a fixed temperature? with that you can hold a exact temperature just above 0 without any chance of freezing. its the standard for flower storage for example.
this is actually a vessel provision plant and changing the design requires approval from the class
@@leckyjake yes, i understand that. i just wonder why they didnt use such a valve. is it just for parts commonality or just a engineer that assumes everything always works perfectly all the time?
The temperature for the rooms should be variable, from negative 22 degrees Celsius to positive 22 deg Celsius. In this way they can use for various reasons.
Tnx sa info sir..dagdag kaalaman
Nice info and kudos to u amigo. Keep safe always.
Ordelay vato