Application Range; Qualified Refrigerant And Oils; Application Limits - Emerson Copeland 4MTL-05 Series Application Manuallines

2.4

Application range

2.4.1 Qualified refrigerant and oils

Stream CO compressors are delivered with POE oil. Large models (4MTL-35 to 4MTL-50) can
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alternatively be delivered on request with PAG oil.
Oil recharge values can
www.climate.emerson.com/en-gb.
Qualified refrigerant
Copeland standard oils
Qualified servicing oils
Factory oil charge
(litres)
* PAG oil qualification in process
Table 3: Qualified refrigerant and oils & factory oil charges
To recharge:
▪ When the compressor is completely empty of oil, the amount of oil to be "recharged" is typically
0.12 litre less than the original oil charge (oil will already be present in the system).
To top up:
▪ During commissioning, planned maintenance or servicing, add oil so that the compressor oil level
is between min ¼ and max ¾ of side sight glasses and full in the housing cover sight glass.
▪ Recommended quality f or carbon dioxide purity class: 4.0 [(≥ 99.99 %) H
≤ 10 ppm, N ≤ 50 ppm] or higher.
O
2 2

2.4.2 Application limits

WARNING
Oil dilution due to low superheat! Compressor breakdown! Low suction
superheat leads to oil dilution. Always operate the system with adequate
superheat to avoid oil viscosity decrease. Additional measures in system
design might help to avoid inacceptable lubrication conditions.
The operating envelopes of transcritical and subcritical StreamCO
Figure 3: Operating envelopes for transcritical applications with R744 – Models 4MTL-05 to 4MTL-15
AGL_Stream_ST_4MTL_4MSL_EN_Rev02
be taken f rom Copeland Select sof tware available at
RL 68 HB (POE 68)
RFL 68 EP (PAG 68)
RL 68 HB (POE 68)
RFL 68 EP (PAG 68)
Medium Low
temp temp
4MTL-05 4MSL-03
4MTL-07 4MSL-04
4MTL-09 4MSL-06
1.3
R744 (CO )
2
Medium Low
temp temp
4MTL-12 4MSL-08
4MTL-15 4MSL-12
4MTL-30 4MSL-15
1.8
compressors are shown below.
2
Medium
temp
4MTL-35*
4MTL-40*
4MTL-50*
2.8
O ≤ 10 ppm,
2
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