copeland reman dmrh750ewm help
hi i need some help with the wiring of the above compressor for D O L running, it is a reman and came with no wiring diagram i think it is now wired in star formation it runs but hot and it stalls...
View ArticleCarrier Window type compressor oil capacity
The compressor was replace how much oil is needed for a 2.5HP R22 AC?? I also have 1 HP R22 that leak several times is it necessary to add oil? It's draining too much water but the air it's blowing is...
View ArticleParallel Compressors
I have visited the sailing vessel Falcon, in Marina Vallarta, Mexico, and found an unusual (to me) configuration, whereby two Danfoss BD50 direct current hermetic compressors have been hooked up in...
View ArticleAlarm code 19,25, ON SBIII
SBIII -30SR+ BN 914568 was in TK service couple of times for same problem replaced oil pressure sensor , speed solenoid, checked ground etc .. runs ok on continuous when on cycle mode sometimes work ok...
View ArticleClimaventa Chiller Coil
Hi Guys On one of our sites we have a NECS/BO904 chiller which has had numerous leaks on the coil normally where the copper pipe goes through the metal supports seems like when expanding and...
View Articlecold room mains cable and isolator sizing
Hi, Im looking to give a quotation for a cold room but abit unsure how to calculate the correct size mains cable required to ensure the job is safe. I know the system needs a 20A breaker but not sure...
View ArticleKelvinator KSR35FG Fault Code
Hello people A work college of mine has an issue with a Kelvinator Split. The green light is flashing 5 times on the indoor unit. Any ideas?
View ArticleNH3 and other fluid properties in Excel
Hi everybody, do you know about an Excel add-in with which I can recall properties for NH3? Using google I simply found NH3Tables by Megawatsoft, but for my didactical purposes it's too expensive and...
View ArticleFavorite Megger?
Hi. Does anyone have a favorite megaohm meter? I just spent far too long chasing a problem and I think it's going to end up being an intermittent compressor problem. Having a megger probably would have...
View ArticleN2 as refrigerant
hi why nitrogen is not use as refrigerant in air conditioning and refrigeration application what the advantage and disadvantage
View ArticleHumidity Control
Hi Friends, In Datacenters with low thermal load we can observe humidity control issues. The relative humidity at the room have a high variation (humidity swings) on a short time. I have observed that...
View Articleflowrite
Hi, I've got a job with flowrite, just sorting start date, looking for accom around salisbury, haven't heard a bad thing about them, looking forward to getting amongst it again, anyone know much about...
View ArticleHow to Measure Air Infiltration
Adding r-value to a 40 yr old cold storage freezer by adding 2 inches of spray foam and sealing cracks. Also applying for an incentive based on kWh saved per year. Calculations are getting extremely...
View ArticleExpansion Valve Damping Effect!!!
Hi everyone!!! what is expansion valve damping effect and hunting effect?? what needs to be done to reduce?? thx
View ArticleA/C for conservatory.
Hi all, Been out of the game for a fair few years now. Was looking for some info on a a/c unit for my conservatory. I know I should really opt for a split but with most if not all my kit now gone (inc...
View ArticleHusky fridge door switch
Hello, I have a Husky (Irn-Bru) single glass door upright fridge. The door switch has melted a bit inside. What does this switch control? It looks like it supplies a live to something in the fridge...
View Articleeurofrigo 2500
anyone know who sells spares for these units,we require a condensor ,is there any truck/van dealer who breaks the old asda/sainsbury,s vans.
View ArticleRG5410RX Refrigerant recovery machine for sale
Hi all I have a promax recovery machine for sale as above. new in box message me for details can post in uk. £450.
View ArticleBitzer OS85 series gasket problem
Have a problem with the gasket at oil inlet from the oil separator blowing out and loosing oil and refrigerant. This is the second time since new last spring. Is there a known problem with their...
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