R-23 Refrigeration System

Compressor Model No.

ZM18K4E-TFD-N275, Hermetic Scroll

Refrigerant Charge                       Evacuated System

Add Partial Charge by Pressure

3.2 Kg (7.05 lb) R-23

Charge to 1700 kPa, 17.00 bar, 247 psig

Compressor Oil Capacity

1.77 liter (60 oz.)*

Compressor Oil Type

Polyol Ester Based Type (required), TK Part No.

203-433**

Typical System Pressures at 37.8 C (100 F) Ambient

Standby (Unit Off, Empty Box):         High and Low Side

0 C / 32 F

20 C / 68 F

38 C / 100 F

1600 kPa, 16.0 bar, 232 psig

1700 kPa, 17.0 bar, 2247 psig

1800 kPa, 18.0 bar, 261 psig

-30 C (-22 F) Box, Unit Cooling:

High Side

Low Side

2100 to 2300 kPa, 21.0 to 23.0 bar, 305 to 334 psig

250 to 280 kPa, 2.5 to 2.8 bar, 36 to 41 psig

-60 C (-76 F) Box, Unit Cooling:

High Side

Low Side

1400 to 1600 kPa, 14.0 to 16.0 bar, 203 to 232 psig

900 to 1100 kPa, 0.9 to 1.1 bar, 131 to 160 psig

High Pressure Cutout Switch

Cutout

Cutin

3250 ± 50 kPa, 32.5 ± 0.50 bar, 470 ± 7 psig

2590 ± 250 kPa, 25.90 ± 2.5 bar, 375 ± 38 psig

High Pressure Relief Valve

Relief Pressure

Reset

3447 +520/-104 kPa, 34.47 +5.20/-1.04 bar, 500 +75/-15 psig

2758 kPa, 27.58 bar, 400 psig

*When the compressor is removed from the unit, oil level should be noted or the oil removed from the compressor should be measured so that the same amount of oil can be maintained in the replacement compressor.

**Do not use or add standard synthetic or mineral oils to the refrigeration system. If Ester based oil becomes contaminated with moisture or with standard oils, dispose of properly — Do not use!