TABLE OF CONTENTS
1 INSTALLATION AND PREPARATION FOR USE 13
1.1 Running-in oil filter has to be installed after an overhaul or big repair
13
1.2 Safety valves 13
1.3 INSTALLATION 13
1.3.1 Moving instructions and storage 14
1.3.2 Storage 14
1.3.3 Hoisting and moving instructions 15
1.3.4 Required free space 16
1.3.5 Foundation requirements 16
Concrete structure 17
Anchoring 18
Mounting the base frame on a concrete block 19
Mounting bare compressor on a concrete block 21
1.3.6 Connecting to refrigerating system pipework 21
Torques for factory supplied check valve / stop valve assembly 22
1.3.7 Connecting the power supply 23
1.3.8 Earthing connections 23
1.3.9 Separately delivered components 23
1.4 PREPARATIONS FOR USE 24
1.4.1 Leak test of compressor and system 24
1.4.2 EVACUATION/DRYING THE REFRIGERATING SYSTEM 24
1.4.3 Initial oil charge 24
Oil quantities 25
1.4.4 Initial refrigerant charge 26
1.4.5 Adjustment of instruments and safety devices 26
CONTROL DEVICES 26
PRESSURE SETTINGS 26
RE-ADJUSTMENT OF OIL PRESSURE REGULATORS 27
1.4.6 Checking direction of rotation of motor shaft 29
1.4.7 Installing the drive guards (if present) 29
1.4.8 Initial oil warm up 29
1.4.9 Initial start-up 29
Limitations of part load operation and start-up 29
WIRING LOGIC NORMALLY OPEN UNLOADED START SOLENOID 29
Frequency controlled compressor 30
Pre-start check list 30
1.4.10 Starting and stopping procedures 30
First start 30
Restart 31
Restart after a short standstill period of time (less than 1 month) 31
Restart after a long standstill period of time 32
Stopping the compressor 32
2 INSPECTION AND TROUBLE SHOOTING 33
2.1 Periodical inspection 33
2.2 Survey of periodical inspections 33
2.2.1 Check list periodical inspection 34
2.3 STEPS FOR LONGER SHUT-DOWN PERIODS (> 6 months) 34
2.4 LUBRICATION DATA 35
2.4.1 Topping up oil with compressor operating 35
2.5 EVACUATION, LEAK TESTING AND START-UP OF THE COMPRESSOR/PACKAGE 35
2.5.1 EVACUATION OF REFRIGERANT BEFORE SERVICING 36
2.5.2 LEAK-TIGHTNESS AFTER SERVICING 36
2.5.3 EVACUATION AFTER SERVICING 36
2.5.4 START-UP AFTER SERVICING 36
2.6 DRAINING AND CHANGE OF OIL 37
2.7 REPLACEMENT OF OIL FILTERS 37
2.8 DISMANTLING, INSPECTION AND RE-ASSEMBLY OF SUCTION AND DISCHARGE VALVES 38
2.9 COMPRESSOR PURGING 38
2.10 TROUBLESHOOTING TABLE GRASSO RECIPROCATING COMPRESSORS 39
3 MAINTENANCE 42
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