When multiple compressors are piped together with a common suction and discharge header - such as with the arrangement of a parallel rack configuration - oil return to each compressor is a major concern. Typical oil recirculation rates are dependent on three factors.

The TMW large water-to-water series geothermal heat pumps are available in sizes 360 (30 tons), and 600 (50 tons).

The AAF-HermanNelson® self-contained unit ventilators with two-stage compressors are ideal for classroom retrofits because they are an affordable alternative to renovations, fit easily into existing ventilator space, offer the ultimate classroom comfort for students and teachers, and meet energy-efficiency requirements, states the company.

The advanced water-source heat pump controller with a digital diagnostic display indicates either the current operational mode or a fault lockout code.

The range of scroll compressors for residential and light commercial applications include R-410A, R-407C, and R-22 models.

Tecumseh Products Co. announced the release into India of a new line of dc Masterflux® compressors, designed specifically for battery-cooling applications within the region’s growing telecommunications market.

Compressor electronics technology can enhance compressor and system performance by sensing and interpreting information found inside the compressor, providing new levels of protection and diagnostics.

Expansion of the company’s North American large-frame rotary compressor lineup includes new solutions for the residential, specialty, and industrial air conditioning markets.

Scroll compressors by the company for commercial and light commercial applications include R-410A, R-134A, R-407C, and R-22 fixed and variable-speed models.

Many servicemen experience service calls where the compressor has both a low head pressure and a high suction pressure. There are three main reasons why a compressor will simultaneously have a low head pressure and a high suction pressure.