There is a proportional relationship between head pressure and compressor motor current draw. When head pressure is either raised or lowered, the motor current draw will increase or decrease in proportion. (This is part one of a two-part series on head pressure control.)
With a flurry of conversations involving a seemingly endless array of refrigerants, a European trade association is urging a back to the basics consideration. Frankfurt, Germany-based Eurammon wants ammonia to stay on the list - and at a pretty high position.
Four- and five-year apprentice programs that could meet licensing requirements of local municipalities are on the educational docket of the Refrigeration Service Engineers Society (RSES).
It was labeled the "AHS/Contractor Summit" and it turned into an interesting Q&A session between audience members and a panel of American Home Shield (AHS) executives. The event took place during the AHS National Contractor Conference in early October.
Parker Hannifin Corp.'s recent acquisition of Sporlan Valve Co. made some big news in the trade press, but officials at both companies were quick to assure contractors, wholesalers, and dealers that it will be "business as usual" with both entities.
Service technicians need to completely evacuate a refrigeration system any time they open the system to the atmosphere. Vacuum pumps and micron gauges are the tools you need to use for this. Are yours in good working order?
Many business owners face the same dilemma at one time or another - deciding when to stop working in the business and start working on the business. Terry Boone is no exception. What he didn't know was he would soon have the help of some of the trade's best-known business consultants to help coach him.
What if a manufacturer could come up with a new refrigeration valve that is comparatively lightweight, reduces leak potential to a minimum, and is able to work with a range of refrigerants, from HFCs to ammonia to CO2?
Contamination results in increased temperature and energy costs and decreased pump performance, pressure, and evaporator efficiency. Identifying contamination can prevent serious malfunctions, decrease operating costs, and increase cooling capacity.
RSS