Emerson SCROLL SZO44 - Manual (Page 33)

Dual-Compressor Module Technical Support and Service Dual-Compressor Module Technical Support and Service
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peCifiCatioNs
Table 7 Compressor Module Specifications
General Information
Inlet pressure range
Approximately -.75 to 25 psig
Outlet pressure range 70 to 275 psig (depends on model—see page iv)
Mechanical Description
Module weight
Approximately 660 lb. (300kg)
Suction connection 1.5” NPT
Discharge connection 1.0” NPT
Sound level Approximately 75 dBA @ 1 m, 60 dBA @ 10 m
Vibration 3 mil at 60 Hz
Minimum cold start ambient temperature 1,4 Compressor -20°F (-29°C) VFD power 14°F (-10°C)
Ambient operating temperature range 1,4 0 to 122°F (-18 to 50°C)
Module dimensions See Figure 4 on page 6
Materials of Construction
Compressor - general
Cold rolled steel, aluminum, cast iron as required
Compressor bearings Self-lubricated, sleeve type, steel backed
Oil heat exchanger Aluminum
Oil/gas separator tank Cold rolled steel
Tubes/fittings/skid structure Stainless/carbon steel
Lubrication
Oil type
Synthetic, 15 weight, PAO (special factory-supplied blend)
System oil capacity, oz. (ml) 380 fluid ounces (11.25 liters)
Projected oil consumption 2 Approximately 40 oz. (0.9 l) / 8,000 hours at 0.25 psig suction (<5 ppm)
System Electrical (Standard)
Minimum VFD ambient startup temperature
3,4 +14°F (-10°C)
Power supply to inverter
• Voltage range
• Input frequency range
380 to 480VAC (50/60 Hz)
Overpressure detection (outlet) 215 psig open (290 psig for SZV32)
Underpressure detection (inlet) 0.75 psig open (low pressure system)
Oil overtemperature detection 240°F (110°C) open (280°F for SZV)
Fault output to customer Packager to establish
Run input from customer Dry contact
Gas Medium
Natural gas
H
2
S maximum content 5 450 ppm
Moisture content 5 100% saturated, no free liquids
Inlet temperature 5 -20 to 115°F (-28 to 46°C); protection from freezing if water is present
1. If the Compressors are started at temperatures above the listed minimums and continue to run, the minimum operating temperature
is 20°F (-29°C).
2. Based on sweet gas wellhead gas. Results may vary due to gas quality and site conditions.
3. Do not apply power to the VFD if ambient temperature is below this level.
4. If power is continuously supplied to the VFD when the Compressor is off, the minimum starting temperature is -4°F (-20°C).
5. Consult factory for more details and applications guidelines.