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Grasso RC6 - Page 85

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Refrigeration Division

Grasso

Table of Contents

General Safety Instructions5
Safety5
Safety Instructions5
Typographic Signs5
General Information and Survey of Settings and Limits7
Operating Limits and Switch Settings7
Table of Contents9
Installation11
Moving Instructions and Storage11
Hoisting and Moving Instructions11
Hoisting a Compressor-Package11
Hoisting Angle Bare Shaft Compressor12
Foundation Requirements12
Required Free Space12
Storage12
Concrete Structure13
Anchoring14
Concrete Block Mounting Instructions14
Mounting Bare Compressor14
Mounting the Base Frame on a Concrete Block14
Levelling the Base Frame15
Connecting to Refrigerating System Pipework15
Connecting the Power Supply16
Earthing Connections16
Separately Delivered Components16
Evacuation/Drying the Refrigerating System17
Initial Oil Charge17
Leak Test of Compressor and System17
Preparations for Use17
Initial Refrigerant Charge18
Pressure Safety Switches18
Quantity of Oil to be Filled18
Re-Adjustment of Oil Pressure Regulator19
Settings of Compulsory Pressure Safeties19
Checking Direction of Rotation of Motor Shaft20
Installing the Guards20
Initial Oil Warm up20
Initial Start-Up20
Starting after a Long Standstill Period of Time21
Stopping the Compressor21
Starting after a Seasonal Standstill or Maintenance Operations21
Installation and Preparation for Use21
Inspection25
Periodical Inspection25
Survey of Periodical Inspections25
Post Start-Up Maintenance26
First Maintenance27
Maintenance Schedule27
Steps for Longer Shut-Down Periods28
Lubrication Data28
Topping up Oil with Compressor Operating28
Oil Level in Compressor Sight Glass28
Evacuation of the Compressor29
Cleaning of Oil Filters29
Draining and Change of Oil29
Dismantling, Inspection / Re-Assembly of Suction and Discharge Valves30
Cleaning of Suction Gas Filter30
Compressor Purging31
Troubleshooting Table31
Inspection, Maintenance and Troubleshooting32
Description and Operation of Capacity Control37
Partially Unloaded Starting37
Alternatives to Capacity Control38
Cylinder out of Operation39
Cylinder in Operation39
Standard Capacity Control of Compressor RC4640
Alternative Capacity Control of Compressor RC4640
Alternative Capacity Control of Compressor RC6641
Standard Capacity Control of Compressor RC6641
Standard Capacity Control of Compressor RC46W42
Alternative Capacity Control of Compressor RC46W42
Alternative Capacity Control of Compressor RC66W43
Standard Capacity Control of Compressor RC66W43
General Data45
Technical Data45
Main Dimensions and Space Requirements46
Dimensioned Sketch of Compressor RC4646
Dimensioned Sketch of Compressor RC46W46
Dimensioned Sketch of Compressor RC6647
Dimensioned Sketch of Compressor RC66W47
Dimensioned Sketch of Compressor RC8648
Dimensioned Sketch of Compressor RC86W48
Connections of RC6 and RC6W-Compressors49
Approved Oil Types for Grasso Reciptocating Compressors50
Oil Selection Table50
Lubricating Oils50
Individual Limits of Operation51
Fields of Application for Single-Stage and Booster Operation52
Symbols Used52
Limitations of Part-Load Operation53
Construction of Standard Bare Compressor55
Rotary Shaft Seal56
Suction and Discharge Valve Assembly56
Suction Gas Strainer57
Pressure Relief Valve57
Lubrication System57
Parts Lists61
Table of Contents61
Figures61
Standard Illustrated Parts List Rc661
Standard Illustrated Parts List Rc664
Crankshaft65
Piston and Connecting Rod65
Suction and Discharge Valve66
Rotary Shaft Seal69
Oil Pump69
Capacity Control Mechanism70
Oil Discharge Filter70
Flanged Main Connections73
Suction Gas Strainer73
Oil Suction Filter74
Oil Differential Pressure Safety Switch74
Oil Pressure Regulator74

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