6.2.5 Additional Oil Requirements forScrollandDigital ScrollCompressors
NOTICE
Risk of improper compressor lubrication. Can cause compressor and refrigerant system damage.
Failure to use oil types, viscosities and quantities recommended by the compressor manufacturer may reduce
compressor life and void the compressor warranty. See Compressor Oil Types for R-410A Refrigerant, for the
recommended oil for the system.
• Do not mix polyolester (POE) and mineral-based oils.
• Do not mix oils of different viscosities.
• Consult your Vertiv sales representative, visit https://www.Vertiv.com/en-us/support/, or contact the
compressor manufacturer if questions arise.
See 6.2.5 above, for the amount required for various system charge levels.
In addition to oil added based on system charge, additional oil is required for discharge line field installed traps. Standard
formed tube traps are required, see Figure 6.2 below, and Table 6.11 on page32, because straight tubes and fittings used
as traps require much more oil and the length of the straight tube can vary.
After the system has been fully charged with refrigerant, use a hand pump to add the additional oil at the suction side of the
system while the system is running.
The amount of oil added by field service must be recorded on the tag marked “Oil Added Field Service Record,” attached
to each compressor. The date of oil addition must be included as well.
Figure 6.2 Standard Formed Tube Trap Versus Straight Tubes and Fittings Trap
Item Description
1 Standard formed tube trap
2 Straight tubes and fittings trap
Vertiv | Liebert® DSE Thermal Management System Installer/User Guide
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