Evaporator condenser winter issue

[RANGER1]

Ranger1,

- VFD to 15b
- I can't say about level at that moment
- 5.6b is stand-by pressure (cmp. is off, pressure measured at cmp.)
- slide unloaded by high pressure limitation
- what should I observe at evaporation in case of refrigerant banks up?

thanks

I wa suggesting check refrigerant level in liquid receiver, as level
should alway be visible in sight glasses.
Makes me wonder if air in system, has any maintenance been carried out recently?