CellarPro 4000SH HORIZONTAL SPLIT SYSTEM 220V 50/60HZ, 16270 - Manual (Page 23)

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7. Warm the bottom shell of the compressor above the ambient temperature for
30 minutes to drive excess refrigerant out of the compressor oil. Connect
power to the Evaporator and Condensing unit, and activate the system.
Check that the sight glass is clear when the compressor is running. The
condensing temperature must be above 105°F (135.0 PSIG) when inspecting
for a clear sight glass. In a low ambient environment, it may be necessary to
block off the condenser air intake to force the condensing temperature higher.
If the sight glass is not clear, slowly add vapor refrigerant though the suction
service valve.
8. With a clear sight glass, adjust the superheat on the thermostatic expansion
valve to 10°F +/- 2°F, as measured at the suction access valve located in the
Evaporator.
9. Once the superheat is adjusted, ensure the condenser face airflow is
unrestricted and allow the system to balance for 30 minutes.
10. Check the suction superheat at the compressor using the access port on the
suction service valve. A minimum superheat of 20°F is required at this
location. If it is below 20°F, recheck the thermostatic expansion valve
superheat and increase as necessary to ensure a 20°F superheat at the
compressor.
11. Adjust the fan cycling control (located on the Condensing unit) so that the
condenser fan cuts-out at approximately 90°F (104.5 PSIG), and cuts-in at
120°F (171.0 PSIG). Verify pressures with valve manifold gauges at startup.