Use of oil adhesives is not allowed without written
approval from the Carlyle Engineering Department.
For application with HFC refrigerants R-134a, R-507,
and R-404A, Carlyle recommends an ISO 68 cST viscosi-
ty polyolester oil.
Shown below are POE-68 oils that are approved
for use in Carlyle compressors.
2.4 06D/E Oil Pressure History
All current 06D/E compressors are provided with the
connections for an oil safety switch. The 06D/E com-
pressors use the same basic oil pump design, however
recent changes in the oil pressure regulator design have
resulted in slightly different operating oil pressures.
Shown below in Table 2 is a brief history of the 06D/E
operating oil pressure.
While Table 2 can be used as a guide there are a number
of variables that can affect the oil pressure in compres-
sors. They include:
1. The CFC and HCFC MO or AB lubricants have lower
viscosities then the heavier POE lubricants recommend-
ed. The lower viscosities will result in lower oil pres-
sures then POE lubricants in the same compressor oper-
ated at identical conditions.
2. Oil temperature will also affect oil pressure. Hot oil
will result in lower viscosities and lower oil pressures.
Some of the variables that will result in higher oil tem-
perature are: refrigerant type – especially R-22, high
compression ratio that result in higher overall compres-
sor temperatures and if the compressor is operated
unloaded for long periods.
3. Carlyle 06DA and 06DF air conditioning models use a
different oil pressure regulator then refrigeration duty
06DR or 06DM models. In 50 or 60 hertz applications
the A/C models oil pressure will be equal or higher then
the refrigeration duty models. This 06D A/C regulator
though can result in lower oil pressure in variable speed
applications. The regulator may require replacement in
06D A/C models if applied with variable speed. Review
Carlyle Bulletin 95T-8 for modification recommenda-
tions. Note: the same oil pressure regulator is used in all
06E A/C and refrigeration models.
17
MANUFACTURER BRAND NAME
Castrol
ICI EMKARATE
CPI
Mobil Artic
†
Castrol
†
E68
RL68H
Solest 68
EAL 68
SW 68
†Medium temperature applications only.
Carlyle does not recommend the use of POE lubricants with R-22.
06D MODELS PSI (Bar) 06E MODELS PSI (Bar)
Before May 1984
(Prior S/N 2084J...)
May 1984 to March 1994
(Between S/N 2084J & 1094J)
Starting March 1994*
(Starting S/N 1094J...)
12 to 18
(.83 to 1.24)
16 to 22
(1.1 to 1.52)
18 to 26
(1.24 to 1.8)
12 to 18
(.83 to 1.24)
16 to 22
(1.1 to 1.52)
18 to 34
(1.24 to 2.3)
*06D/E refrigeration duty service models started using new high flow oil pumps in June 1994 (starting S/N 2994M (D/E) 5315).
Table 2 – Oil Pressure History
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