Hi all,

Good day. For supermarket refrigeration with 60% cold room and 40% display case for Medium Temp system. If compressor rack is set at -15 deg C SST and no suction pressure regulator is installed for cold room suction line, would it cause ice block built up only at the bottom of cold room evaporator coil? However, at the same time, this system also has its oil overcharged. Any opinion?

Which is the cause for ice block built up. Defrost system is ok

TQ

Rgds
Kevin