Manitowoc QuietQube SD0672C Technician's Handbook page 227

11. Charge the system with the proper refrigerant to
the nameplate charge.
12. Operate the ice machine for one hour. Then,
check the pressure drop across the suction line
filter-drier.
A. If the pressure drop is less than 2 psig, the
filter-drier should be adequate for complete
cleanup.
B. If the pressure drop exceeds 2 psig, change
the suction line filter-drier and the liquid line
drier. Repeat until the pressure drop is
acceptable.
13. Operate the ice machine for 48-72 hours. Then
remove the suction line drier, replace with suction
filter and change the liquid line drier.
14. Follow normal evacuation procedures.
Part Number 80-1505-3 6/11 227