An undercharge of refrigerant will cause low head and suction pressures, but that is not the only thing that will cause both pressures to be low. An undercharge will have low condenser liquid subcooling readings on the high side, where a dirty air filter for the evaporator will not produce low condenser liquid subcooling readings.
Diagnosing an air conditioning system isn’t easy. A service technician must be a trained professional to diagnose a system efficiently and correctly — no longer can a tech rely on rules of thumb for coil temperatures or pressures.
A total of 148 exhibitors showed off their latest advances in all types of industrial refrigeration at the International Institute of Ammonia Refrigeration (IIAR) 2016 Industrial Refrigeration Conference and Exhibition in Orlando, Florida. Here are a few of the highlights.
Some contractors have used leak-stop agents successfully for years and consider them practical and cost-effective ways to seal small, hard-to-find leaks in systems. Other contractors feel strongly that only two things belong in a system: refrigerant and oil.
The Russell R-Series Next-Gen MiniCon Multi-refrigerant Air Cooled Condensing Unit features an integral subcooling circuit that allows saturated liquid to flow from the receiver to the condenser where the refrigerant is subcooled by ambient air.
85 members of KARA of New York attend Korean-language training event
November 30, 2015
Emerson Climate Technologies Inc. and ABCO® HVACR Supply + Solutions recently hosted a three-hour product training course for the Korean Air Conditioning & Refrigeration Association (KARA) of New York.