Grinding wheel Regs. (One for the Trainers!)
Having done the above Several times during my career. I am confused with the regard to slitting disks. I was always taught you did not grind or cut (with disc's) non ferrous materials. As these...
View ArticleMcQuay ALS260C screw chiller liquid injection question
I'm having a problem with one of three compressors on this unit; Circuit one and three compressor screw cover plates are cold and sweating, circuit 2 compressor is hot to the touch. All three liquid...
View ArticleHitachi Screw Compressor Retrofit
Hello! Has anyone had any experience of retrofitting a water chiller with Hitachi 6002SC-H screw compressor running with R22? We have a leak on the system and it seems pointless to recharge with R22R...
View ArticleWarranty issue with Hotpoint F/F and Solar Power
I'm an Air Con engineer but one of my clients has asked if I could look at their Hotpoint Fridge/Freezer. I'm based in Spain and my client is using Solar Power as the main supply, backed up by a...
View ArticleWarranty issues using Solar Power
I've also asked a similar question on the domestic refrigeration page, but assume it could happen with Air Conditioining. I've been asked by a client to look at a nearly new (few weeks old) Hotpoint...
View Articledigital vac stat
Hi guys today i was working with vaccum pump and digital vac stat . so was wondering. normaly i just put it for 45min on ordinary gauges. how many microns of vaccum is perfect or closest to perfect...
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Ice machines
The below signage should be standard van stock items surely:) Attached Images image.jpg (94.3 KB)
View ArticleVRVII indoor problem EEV?
Had a call this evening and could stay only for +/- 45 minutes till the office closed then. Have to go back tomorrow but office (meeting room) is heavily used . On a RXYQ32 outdoor (VRV II, 2 pipes,...
View ArticleSwitching Condensors
Hello, We have been using a tube and fin condenser coil for many years, but want to switch to a parallel flow version. Assuming the dimensions are relatively similar, can I expect at least similar...
View ArticleHow to find Contract workers
I work for a company that sells aftermarket refrigeration for automobiles. We had a part time person that would handle any design needs we had. He has moved on, so we need to find a person/company that...
View Articledaikin decos 3f allarm in pty j241
hello to all I have a problem with a machine Daikin alarm j241 model building in January 2013 lxe10e133 sensation valve dsv the valve DSV nn is installed to factory. controller decosIIIf Can you help...
View ArticleSeawater Cooled Condenser Leak
I have found a substantial leak in the seawater cooled condenser on a 3 ton AquaAir chiller boat air conditioner. The condenser is a parallel flow 90-10 Cupronickel seawater condenser. This condenser...
View ArticlePiping coupling
the piping in most cases in HVAC applications is connected by soldering or brazing .. i want to ask if it can be connected by a coupling ? what is the type of coupling is suitable for HVAC application...
View Articlea condensor freeze
we have a glycol chiller, ethylin glycol temperature about -15dc,the chiller is insde a plant room. this spring ,the condensor were sondenly discovred freezed,with more than 10 tubes broken. this...
View ArticleReplacement programmer options
Hi, We have a Lennox CHP116-261 package air conditioner/heat pump. It has the standard Lennox controller which isnt exactly easy to use. I spoke to our contractor, who have said the recommended...
View ArticleInternship Australia
Hey, I am Jasper Ceuppens, an electro-mechanics student (option HVAC) at the Thomas More University of Geel (Belgium). Next school year I will start the last year of my professional higher education,...
View ArticleThermostatic Control Basics
Hi Im a second year apprentice and I thought I ought to share this article on basic control circuits which I found helpful in bettering my skills at this....
View ArticleOutstanding invoice
Just curious what a healthy percentage of a companies turn over would be owed to them? Say you turn over 100K a year, how many K would you expect to be inbetween you and your customers?
View ArticleCompressor York JL oil pressure problem
Hi.What can cause oil problem to that compressor? HP- 250 PSI SP-70 PSI OIL PRESSURE-105 PSI After 5 minutes the machine stop from oil pressure diff.
View Articleyork water chiller printer
Hi guys,, I have an air cooled scroll compressor liquid chiller ( YLAA 0300 YE 50 ) I have few questions and hope any one can help me out 1- what type of printer i can use to print out the data and...
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