I'm surprised to see both liquid solenoids and suction stop on some or all of the subcircuits. We have similar circuits all using suction stop only, no need for 2 valves, the suction stop best controls temp, defrost and problems with service case icing all in one. The liquid line solenoid is not needed on these kind of multi circuited systems and is a source for more maintenance and leaks. CHING CHING ok I call for LL solenoids everywhere.
I Like those Comtrol systems and the assigned suction floats, have 1 store that uses fresh meat as primary float assignment and no epr's or other temp control on that system and it maintains proper temp through the controller using that system as it's setpoint. Works good!