Copeland digital compressor controller A wiring diagram is a streamlined traditional photographic depiction of an electric circuit. ... Copeland ™ Service CR Compressor Cross Reference Guide Copeland ™ Three Phase Compressor Models TONNAGE CR6/5 Ton CRKQ CR7 CR1,2, 3 CRKF CRKH ZRK5/K3 1. txt) or read online for free The S-series is comprised of models 2S, 3S, 4S, 6S and 8S ....