Low side too low and high side too high
I just repaired a single stage cpu condensing unit (machII), had a crack in the suction line. I replaced the suction line, filter drier, then charged with r404a, system uses a capillary tube as a...
View ArticleCold Storage design and construction
Hi Guys. I'm new member in this great forum, I am HVAC engineer and wanna to build cold storage in JORDAN so that I want your help for any things regarding this project Regards. Jawhari
View Articlegram gsv 50 screw compressor
hi friends im rebuilding a gram gsv 50 screw machine and i need a service manual. If any body has one i would be grateful for a copy.thankyou
View Articlecommercial work
hi all, basically im 23 and have been doing transport refrigeration since i left school, but ive also done a bit on the commercial side (small cold stores, display cabnets, split a/c units etc) and i...
View ArticleRefrigeration System cleanout
Was wondering if anyone uses methalated spirits to flush out systems/gas bottles etc.....I have heard you can use this but would like to get other opinions...or other products to flush out systems
View ArticleR123 Prices/Availibilty in the USA
Hi Guys, Can anyone help with rough pricng on R123 in the states? Also is it readily accessible though different wholesalers? I realise there is resrictions on HCFC's in the states which includes R123....
View ArticleCondensing Unit Hermetic Compressor - Stalling and Tripping??
Hi Everyone, Just looking at an Ice Cream Van with a small 1ph hermetic condensing unit (on R409A). The customer tells me a capacitor exploded and he replaced it, but fridge not cold. When I turn the...
View ArticleClimaveneta with Turbocor compressors
Hi I'm working with a Climaveneta chiller model TECS-H 2AS which has 2 x turbocor compressors. I've been trying to connect to the chiller with their service program but not having any luck at the...
View Articlechest freezer always running
Hello at RE: I have a White Westinghouse chest (model: FC105L), it could be twenty years old. To date it has worked perfect, even after being moved twice. Here is the short history of the issue. We had...
View ArticleZanussi ZNB 3850 Fridge/Freezer - Freezer too warm
Hi. The past fortnight or so my freezer temp warning light and beeper goes off. The temp should be running at -20c but it has risen to -11c by the time the alarm goes off. I've noticed the problem most...
View Articletrane chiller pass codes
need access codes for trane chillers i have the list of codes posted on the forum but trane code not working
View Articletemperature higher than set temp(-80c) at the bottom of freezer
Dear All, I am newbie to refrigeration the cooling at the bottom of deep freezer is higher than set temperature (-80C ) diffrence between set and actual temperature is 10 to 15C. Freezer temp. sensor...
View ArticleAdding another indoor unit to a City Multi
I had a query from a customer today. They have a Mitsubishi City Multi supplying 7 indoor units via a BC box. They wanted to know if the spare stub on the BC box could be used to add another indoor...
View ArticleDanfoss Performer Scroll- Terminal covers!
Hi Guys, Has anyone any tips for removing the 8mm nuts and bolts on the above comp Electrical Terminal Covers. I have recently resorted to gripping the small hex back-nut with a pair of mole grips....
View ArticleService Positions Available - Immediate Start
Contract Refrigeration is a privately owned company in Sydney NSW Australia are seeking qualified Refrigeration Service Technicians with special emphasis on commercial refrigeration as majority of work...
View ArticleTrane centrifugal control retrofit
Dear all, The project Im working is to retrofit the control of a centrifugal 2 stage R12 Trane unit. The unit has oil DP switch (not transducers) and pulsed actuator motor (not stepper) I want to keep...
View ArticleSolar hybrid air conditioning
Hi Really appreciate it if someone can explain how by putting a solar collector after the compressor can make the system more efficient. Thanks
View ArticleDaikin modbus registers
I search Modbus registers for EKFCMBCB7 board, installed in Daikin Cassette Type FWC07AT
View ArticleHeat Pump HELP - I am home owner who needs help with my Heat Pump wiring.
PLEASE HELP ME.... I have a heat pump system and I need help with the wiring. I am able to email or post pictures of the circuit board and wiring if that will help. I have two problems: 1. Major...
View ArticleCold storage condensing unit question
Dear Members, I'm planing to build commercial cold storage warehouse. Right now I have to decide which condensing unit to buy. Chinese units are much cheaper, they claim that they produce Bitzer,...
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