8. Turn on oil heater and warm the oil to 140 to 150 F (60 to 66 C). Operate the oil pump for 2
minutes. Add oil if req uir e d to keep level up to lower sig ht glass.
Oil should be visible in the reservoir sight gla s s dur in g all operating and shut do wn condi-
tions.
Oil Specification
If oil is to be added, it must meet the following Carrie r specifications:
Oil Type for units using HFC-134a............................................Inhibited
polyol ester-based syn thetic compressor oil formatt ed for use with
HCFC and HFC, gear-driven, hermetic compressors.
ISO Viscosity Grade............................................................................68
The polyol ester-based oil may be ordered from you r loc al Carrier representat ive (Carrier
Part No. PP23B2103).
Oil Changes
Carrier recommends chan ging the oil after the fir s t year of operation and every t hree to five
years thereafter as a mi nim u m along with a yearly oil anal ysis. However, if a con ti nuous oil
monitoring system is functioning and a yearly oil analysis is performed, time between oil
changes can be extended.