GEA Grasso RC49 - User Manual

RC9
Instruction Manual For Refrigeration Compressors
00.89.221 v003.99.06.en

GEA Grasso RC49 Specifications

General

Model	RC49
Manufacturer	GEA Grasso
Number of Cylinders	4
Type	Reciprocating
Refrigerant	R717 (Ammonia)
Application	Industrial Refrigeration
Voltage	400 V
Frequency	50 Hz
Weight	1200 kg
Lubrication	Forced-feed lubrication

Summary

3. TECHNICAL DATA

3.1 GENERAL TECHNICAL DATA

Detailed technical specifications and dimensions for single and two-stage compressors.

4. GENERAL DESCRIPTION THE COMPRESSOR

4.9 OIL PUMP, FILTERS AND CONTROL OIL SYSTEM (see fig. 4.5)

Details the oil pump, filters, and control oil system components.

4.10 LUBRICATION SYSTEM

Outlines the pressurized oil circuit for lubrication and cooling.

5. DISCRIPTION AND OPERATION OF ACCESSORIES

5.2 PRESSURE SAFETY SWITCHES

Explains safety switches for discharge, suction, and oil pressure protection.

5.4 CYLINDER HEAD TEMPERATURE SAFETY DEVICE (see fig. 5.1)

Describes the safety device for monitoring cylinder head temperature.

5.5 CAPACITY CONTROL

5.5.1 MANUALLY OPERATED CAPACITY CONTROL (single-stage compressors only) (see fig. 5.2)

5.5.2 ELECTRICALLY OPERATED CAPACITY CONTROL (see fig. 5.3)

6. OPERATION OF THE COMPRESSOR

6.1 UNLOADED STARTING

6.2 LOADED OPERATION OF COMPRESSOR

6.3 LIQUID HAMMER

Explains the causes and consequences of liquid hammer.

7. STARTING, STOPPING AND ADJUSTMENT OF COMPRESSOR

7.1 STARTING THE COMPRESSOR

Provides a detailed procedure for starting the compressor.

7.2 STOPPING THE COMPRESSOR

Outlines the procedure for safely stopping the compressor.

7.3 SETTING OF THE OIL PRESSURE REGULATOR

Explains how to adjust the oil pressure regulator for correct lubrication.

7.4 SETTING OF PRESSURE SAFETY SWITCHES (see fig. 7.2)

Details how to set discharge, suction, and oil pressure safety switches.

8. PERIODICAL INSPECTION OF THE OPERATING COMPRESSOR

8.1 SURVEY OF PERIODICAL INSPECTIONS (CHECK LIST) (Also refer to the explanation overleaf)

Presents a checklist for regular compressor inspections.

9. COMPRESSOR MAINTENANCE

9.1 MAINTENANCE SCHEDULE

9.2 LUBRICATION DATA

9.4 EVACUATION OF COMPRESSOR

9.5 DRAINING AND CHANGE OF OIL

9.6 CLEANING OF OIL FILTERS

9.7 CLEANING OF THE SUCTION GAS STRAINER

9.8 DISMOUNTING, INSPECTION AND RE-ASSEMBLY OF SUCTION AND DISCHARGE VALVES

9.9 COMPRESSOR PURGING

10. FAULT FINDING TABLE