mycom 250VLLG Manuals

Manuals and User Guides for mycom 250VLLG. We have 1 mycom 250VLLG manual available for free PDF download: Instruction Manual

mycom 250VLLG Instruction Manual

mycom 250VLLG Instruction Manual (161 pages)

Screw Compressor

Brand: mycom | Category: Air Compressor | Size: 11 MB

Table of Contents

Preface
2
Revision History
2
Disclaimer Clauses(Exclusion of Warranty Clauses)
3
Warranty and Disclaimer
3
Warranty Clauses
3
Important Information
4
Intended Use of this Product
4
Construction of this Manual
5
Table of Contents
7
Table of Contents
8
Chapter 1 Safety

12
- Observation/Prevention
  12
- Observance (Do's)
  12
- Do's on Operation
  12
- Do's on Maintenance
  12
- Do's on Lockout/Tagout after Shutting off the Power
  13
- Do's about Personal Protective Equipment(PPE)
  13
- Do's about Handling of Hazardous and Toxic Substances
  13
- Do's about the Handling Emergency Situations
  13
- Do's about Waste Oil, Fluid, and Materials
  13
- Other Do's
  14
- Prohibitions (Don'ts)
  14
- Warnings
  15
- Types and Meanings of Warnings
  15
- Safety Labels
  15
- Residual Risks
  17
- Safety Devices
  20
- Emergency Stop Button
  20
- Breakers for the Main Motor Power and Control Power
  20
- Compressor Protection Devices
  21
Chapter 2 Compressor Specifications and Structure

23
- Features of SCV-Series Screw Compressors
  23
- Model Designation of the Compressor
  24
- Compressor Specifications
  25
- Standard Specifications
  25
- Operation Limits
  28
- Outer Dimensions
  29
- Compressor Structure and Mechanism
  32
- Overview of SCV-Series Screw Compressor
  32
- Refrigerant Gas Compression Mechanism
  33
- Gas Suction Phase
  33
- Compression Phase
  34
- Discharge Phase
  34
- Internal Volume Ratio VI
  35
- What Is the Internal Volume Ratio VI
  35
- Variable VI Mechanism
  36
- Why the VI Needs to be Changed
  37
- Bearings and Balance Piston
  40
- Shaft Seal
  40
- Capacity Control
  40
- Oil Supply Route
  40
Chapter 3 Installation

43
- General Precautions for Installation
  43
- Installation Works
  43
- Unpacking
  43
- Storage
  43
- Transportation
  43
- Preparation for Installation
  45
- Installation
  47
- Placement
  47
- Shaft Alignment between the Compressor and Driving Machine
  47
- Piping Connection
  48
- Equipment and Devices for Protection of the Compressor
  48
- Airtightness Test
  49
- Vacuuming
  49
- Lubricating Oil Charge
  49
- Initial Charge of Lubricating Oil
  49
- Additional Charge of Lubricating Oil
  49
- Charge of Refrigerant
  49
- Checkout after Installation
  49
Chapter 4 Compressor and Package Unit Operation

50
Chapter 5 Maintenance and Inspection

62
- Precautions for Maintenance and Inspection
  62
- Maintenance and Inspection List
  64
- Daily Management
  64
- Periodic Inspection
  66
- Compressor Disassembly Preparation
  68
- Replacement Parts
  69
- Refrigerant Gas Recovery
  71
- Removal of Connections to the Unit
  71
- Removal of the Compressor from Base Flame
  73
- Compressor Disassembly Order
  74
- Disassembly and Inspection
  75
- Unloader Indicator Block
  75
- Disassembly
  76
- Inspection
  77
- Shaft Seal Block
  78
- Disassembly
  78
- Inspection
  79
- Unloader Cover
  80
- Disassembly
  80
- Inspection
  81
- Unloader Cylinder and Balance Piston Cover
  82
- Disassembly
  82
- Inspection
  83
- Balance Piston Block
  84
- Disassembly
  84
- Inspection
  85
- Bearing Cover
  86
- Disassembly
  86
- Inspection
  86
- Suction Cover and Side Bearings
  87
- Disassembly
  87
- Inspection
  88
- Thrust Bearing Block
  89
- Disassembly
  89
- Inspection
  90
- Rotors and Main Rotor Casing
  91
- Disassembly
  91
- Inspection
  91
- Variable VI Auxiliary Slide Valve and Unloader Slide Valve
  92
- Disassembly
  92
- Inspection
  93
- Bearing Head and Main Bearings
  94
- Disassembly
  94
- Inspection
  94
- Reassembly
  95
- Bearing Head and Main Bearings
  96
- Unloader Slide Valve
  97
- Installing the Rotors
  98
- Suction Cover and Side Bearings
  99
- Balance Piston Sleeve
  99
- Installing the Suction Cover
  100
- Thrust Bearing Block
  101
- End Clearance Measurement
  103
- End Clearance Adjustment Procedure
  104
- Tightening after Finishing the End Clearance Adjustment
  105
- Installing the Balance Piston
  105
- Balance Piston Cover and Unloader Cylinder
  106
- Unloader Cover
  109
- Bearing Cover
  110
- Shaft Seal Block
  111
- Unloader Indicator
  114
- Potentiometer
  114
- Micro-Switches and Micro-Switch Cam
  115
- Reassembly
  115
Chapter 6 Troubleshooting

118
Chapter 7 Related Documents

129
- Exploded Views and Sectional Views
  129
- Parts Configuration Table
  134
- Lock Nuts
  155
- Thrust Bearing Gland
  156
- O-Rings Used
  157
- List of O-Rings Used
  157
- Gasket Used
  158
- Tools for Disassembly
  159

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