mycom 3225**C Series User Manual

2202MYJE-MY-C8-N_2018.02.
Chapter 2 Compressor Specifications and Structure
Compound 2-stage Screw Compressor 3225**C 2.3 Compressor Specifications
2-2
2.3 Compressor Specifications
2.3.1 Standard Specifications
Table 2-1 3225**C Screw Compressor Specifications (1/2)
Items
Model
LLLC
LLMC
LLSC
LLC
LMC
LSC
Product mass
kg
4150
4100
4020
3440
3390
3310
Low-stage swept volume
@3550 min
-1
/2950 min
-1
m
3
/h
6740
/5600
6740
/5600
6740
/5600
5700
/4740
5700
/4740
5700
/4740
High-stage swept volume
@3550 min
-1
/2950 min
-1
m
3
/h
2840
/2360
2380
/1980
1900
/1580
2840
/2360
2380
/1980
1900
/1580
Working fluid (Refrigerant)
-
Ammonia, Hydrofluorocarbon, etc.
Design pressure
MPa
2.6
Capacity control (Actual load)
%
10 to 100
Rotation direction
-
Counterclockwise viewed from motor
Connected
pipe size
Low-stage suction
flange
-
JIS 20K 350A (14”)
Low-stage discharge
flange
-
JIS 20K 200A (8”)
High-stage suction
flange
-
JIS 20K 200A (8”)
High-stage discharge
flange
-
JIS 20K 150A (6”)
Journal lubrication
(low-stage)
-
JIS 20K 40A (1-1/2”)
Journal lubrication
(High-stage)
-
JIS 20K 25A (1”)
Oil injection
lubrication
-
JIS 20K 20A (3/4”)
Oil return Inlet
(Rotor casing)
-
JIS 20K 32A (1-1/4”)
Oil return outlet
(Low-stage Bearing
cover)
-
JIS 20K 32A (1-1/4”)
Oil return outlet
(High-stage Suction
cover)
-
JIS 20K 20A (3/4”)
Low-stage capacity
control
-
Load: Rc3/8, Unload: Rc3/8
High-stage capacity
control
-
Load: Rc3/8・Rc1/2, Unload: Rc3/8
 Unless otherwise noted, the pressure unit MPa represents the gauge pressure
in this manual.
 For limits of working temperature and pressure, see "2.3.2 Operation Limits" in
this manual.

mycom 3225**C Series Specifications

General

Brand	mycom
Model	3225**C Series
Category	Compressor
Language	English

Summary

Warranty and Disclaimer

Important Information

For Safe Use of This Product

Provides crucial safety guidelines and precautions for operating the compressor.

Chapter 1 Safety

Strict Requirements and Prohibitions

Lists essential 'do's' and 'don'ts' for safe operation and maintenance.

Warnings

Safety Devices

Describes essential safety features and their functions.

Chapter 2 Compressor Specifications and Structure

Compressor Specifications

Lists technical specifications like product mass, swept volume, and pipe sizes.

Structure of Compressor

Mechanisms

Explains the working principles of screw compression and related systems.

Chapter 3 Installation

General Precautions for Installation

Installation Works

Chapter 4 Compressor and Package Unit Operation

Lubricating Oil (Refrigerant Oil)

Provides guidelines on selecting, managing, and changing lubricating oil.

Precautions for Operation

Chapter 5 Maintenance and Inspection

Precautions for Maintenance and Inspection

Outlines critical safety measures and general guidelines for maintenance tasks.

Maintenance and Inspection List

Compressor Disassembly Preparation

Disassembly and Inspection

Provides step-by-step procedures for disassembling and inspecting compressor components.

Reassembly

Details the procedures for reassembling the compressor after maintenance.

Chapter 6 Troubleshooting

Compressor does not start up

Identifies causes and actions for compressor startup failures.

Compressor stops immediately after startup

Addresses issues causing immediate shutdown after starting.

Leak from mechanical seal

Capacity control malfunction

Compressor generates abnormal vibration and/or sound.