Mar 29, 2025
What Are Some General Guidelines For Scroll
Compressor Operation?
Compressor Operation?
Running in Vacuum will
cause Terminals to Arc
Discharge line < 225˚F 6”
from Compressor.
Voltage must be within
10% of rating
POE Oil thins at 310-320˚F
Greater than 20 lb. of refrigerant in system,
add 1 fl. oz of oil per 5
lb. of refrigerant charge.
Follow OEM Guidelines
• Superheat must be present
and within OEM
Specification.
• Retrofit must have
minimum 95% POE
• Moisture on Shell can be
normal depending on
application. Verify with
Superheat.
• Compression Ration:
❑ 3:1 High Temp
❑ 5:1 Medium
Temp
❑ 10:1 Low Temp
• Bottom of Shell < 200˚F
Discharge line < 225˚F 6”
from Compressor.
Voltage must be within
10% of rating
POE Oil thins at 310-320˚F
Greater than 20 lb. of refrigerant in system,
add 1 fl. oz of oil per 5
lb. of refrigerant charge.
Follow OEM Guidelines
• Superheat must be present
and within OEM
Specification.
• Retrofit must have
minimum 95% POE
• Moisture on Shell can be
normal depending on
application. Verify with
Superheat.
• Compression Ration:
❑ 3:1 High Temp
❑ 5:1 Medium
Temp
❑ 10:1 Low Temp
• Bottom of Shell < 200˚F

