RSLogix 500 PLC programming-------- Can anybody help me
Hello there. I uploaded a logic program and now wish to import to it a database from another program which has all the comments, tags and descriptions. Can anyone tell me how to do it.? Regards Peter...
View ArticleFujitsu split system problem
Hi, I have Fujitsu split air condition system from 2003. year, 3.5 kW. One month ago inside unit start to freeze and I call engineer. He fill the system with R22 gasoline. It was missing about 50%. Few...
View Articleerror 554 on Samsung UH070cav
Hi guys! I got samsung EH070Cav indoor unit and UH070cav outdoor unit 1.5 years old. When i turn it on system works for 10 minutes and turns off with 554 error code. 554 - Outdoor unit refrigerant Full...
View ArticleHELP! 1PH Copeland Scroll continues to run backwards!
I am not sure if we have reached a point of damage or not but I discovered my own system running backwards today. I heard a different sound at the A coil and instinctively felt the line sets. Liquid...
View ArticleSamsung upright fridge freezer no frost DA68-00650A
Hi every1,got Samsung upright fridge freezer no frost DA68-00650A which is freezing up ice in the bottom part of the freezer so much that stops the trays from sliding .Also tried to look for pipe which...
View Articlewhat to do with my gas stocks??
hi guys just after a little advice , to cut a long story short after spending the last couple of years in Australia i have decided to break all my ties with the UK and move over permanently, im in...
View ArticleEvaporator CTD
Hi Folks, have just posted this thread on commercial but on reflection it would be more at home here. What is "degrees CTD" in relation to evaporator capacity (watts) Thanks
View ArticleBitzer semi hermetic compressor failure
Hello, Using a system with bitzer semi hermetic compressor 8FC-70.2Y40D for DX air conditioner. AHU is having danfoss electrical expansion valves AKV-20 - 2nos. System is operating with R404A. Unit is...
View ArticleAEG A72900GNW0 Fridge not cooling correctly
Hi there, I bought an AEG A72900GNW0 a little over a year ago, for the past month i noticed things didn't seem as cold. I tried to ignore it but then the milk started going off after just a couple of...
View ArticleCooltime AC14SX2F
Having a problem with said AC unit, has anyone had any dealings with them? The cooling mode is clicking on and off with the light flashing intermittently. The unit is cooling as it should but the...
View ArticleTrane made in Egypt
Hello guys, need some advice on a CGAM240 chiller made in Egypt. It's been two times that I was called to this machine for a leak, one in the condenser inlet a few weeks later a rupture between the...
View ArticleVFD torque problem with a Bitzer screw
If we connect a 55 kW motor to a VFD with an input of 400 V, what's then the voltage at the compressor? Today someone told me that this will be 375 V. Torque decreases with square root of voltage...
View ArticleNext control and monitoring systems
Hi Guys anyone worked on the Next control and monitoring system, I guess its a similar system to the RDM, I have not been given any info or log in details yet so making it difficult to work on, I have...
View ArticleR-22 to R-438a conversions
After 25 years of NH3 systems I am now installing and servicing residential HVAC systems. I am in need of advice from anyone who has converted a R-22 system(1.5 to 3.5 ton) to R-438a. The wholesalers...
View Articleultra-low temperature freezer
Hi everyone, i am fresh here, brief self-introduction, from China, 23, male, engineer, my jod is to design and develop ultra-low temperature freezer in my company, my major is english in college. so i...
View ArticleSamsung RS21 Fridge Problems
Hi - I have recently purchased a house which has a Samsung RS21 Fridge/Freezer in it, the freezer works without problem and keeps a study temperature but the fridge constantly alters it's temperature...
View Article* I am looking for Hitachi screw compressor & Dryer operation manuals, hope...
* I am looking for Hitachi screw compressor & Dryer operation manuals, hope someone can help. Thanks! Use private messaging to contact me or download my vcard
View ArticleMotor sizing!!!
Hello Everyone.... I am wondering how you choose kW rating of the motor in terms of compressor cooling capacity??(talking about open drive single screw ammonia compressor).. For example what motor...
View ArticleVFD Problem on a NH3 screw
May I ask to look once at this thread where I have a problem with a VFD on a NH3 screw Propably I bettre posted this here http://www.refrigeration-engineer.co...637#post282637
View ArticleLG floor standing 4 ton strange sound
hi i have 4 ton LG floor standing its works perfectly but there is loudly sound from compressor the compressor is reciprocating type http://205.196.121.141/nafp3uhu31ug/...o/MOV_1021.mp4
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