Updates to IIAR 6 inspection requirements.

As you progress in your refrigeration career, the topic of recirculation rate/ratio (RR) for evaporators will eventually become a subject...

Many industrial refrigeration systems in use today were installed over 20 years ago and likely feature Cornell ammonia pumps for recirculating liquid refrigerant in the refrigeration process. Installers would consult a pump catalog, and at that time, the Cornell ammonia pump was the preferred choice over other options like Buffalo pumps and Durco pumps. Ammonia systems still using Cornell ammonia pumps for liquid recirculation have almost certainly required periodic rebuildin