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mycom 200SUD User Manual
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Chapter 2
Compr
essor S
pecificati
ons and Structure
UD-
series
Screw
Comp
res
sor
2
.4
Compre
ssor Struct
ure and Mechanis
m
2-
18
Oil suppl
y header
Figure 2
-
14
Oil
Supply R
oute
of Forced Oil
Supply System
Figure 2
-
15
Lubricati
ng oil flow inside the c
ompressor
①
Oil inject
ion
Unlo
ader Push Rod
②
Oil supp
ly pipe (f
or lubr
ication)
Thrust Beari
ng
Mechanica
l Seal
③
Unloader opera
tion
（
Solen
oid valve
）
Unloader pi
ston
Rotor cham
be
r
Discharge port
Main Bear
ing
Bal
anc
e Pis
ton
Side Bearing
Slide valve
Inj
ect
ion h
ole
38
40
Table of Contents
Preface
2
Revision History
2
Warranty and Disclaimer
3
Warranty Clauses
3
Disclaimer Clauses (Exclusion of 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
11
Observation/Prevention
11
Observance (Do's)
11
Prohibitions (Don'ts)
13
Warnings
14
Types and Meanings of Warnings
14
Safety Labels
14
Residual Risks
16
Safety Devices
19
Emergency Stop Button
19
Breakers for the Main Motor Power and Control Power
19
Compressor Protection Devices
20
Chapter 2 Compressor Specifications and Structure
22
Features of UD-Series Screw Compressors
22
Model Designation of the Compressor
23
Compressor Specifications
25
Standard Specifications
25
Operation Limits
26
Outer Dimensions and Weight
28
Compressor Structure and Mechanism
31
Overview of UD-Series Screw Compressor
31
Refrigerant Gas Compression Mechanism
32
Internal Volume Ratio VI
34
Bearings and Balance Piston
38
Shaft Seal
38
Capacity Control
38
Oil Supply Route
38
Chapter 3 Installation
41
General Installation Precautions
41
Installation Works
41
Unpacking
41
Storage
41
Transportation
41
Preparation for Installation
43
Installation
47
Airtightness Test
49
Vacuuming
49
Lubricating Oil Charge
49
Charge of Refrigerant
49
Checkout after Installation
49
Chapter 4 Compressor and Package Unit Operation
50
Lubricating Oil (Refrigerant Oil)
50
Precautions for Selecting the Lubricating Oil
50
Change of Lubricating Oil Brand
51
Precautions for Handling Lubricating Oil
51
Lubricating Oil Control Criteria
52
Lubricating Oil Replacement Timing
53
Precautions for Operation
54
Prevention of Liquid Flow-Back Operation
54
Purging of Non Condensable Gases
54
When Stopping the Compressor for a Long Time
55
Chapter 5 Maintenance and Inspection
56
Precautions for Maintenance and Inspection
56
Maintenance and Inspection List
58
Daily Management
58
Periodic Inspection
60
Compressor Disassembly Preparation
62
Disassembly Tools and Workplace
62
Replacement Parts
63
Refrigerant Gas Recovery
65
Removal of Connections to the Unit
65
Removal of the Compressor from Base Flame
67
Compressor Disassembly Order
68
Disassembly and Inspection
69
Unloader Indicator Block
69
Shaft Seal Block
72
Shaft Seal
74
Unloader Cover
75
Unloader Piston and Unloader Cylinder
78
Removal of Bearing Cover
79
Thrust Bearings
80
Balance Piston Cover
87
Balance Piston
88
Oil Injection Pipe
91
Suction Cover and Side Bearing
92
Rotor and Rotor Casing
93
Bearing Head and Main Bearing
95
Unloader Slide Valve and Guide Block
96
Reassembly
97
Unloader Slide Valve and Guide Block(125-320)
97
Bearing Head and Main Bearing
98
Rotor
99
Suction Cover, Side Bearing and Oil Injection Pipe
100
Balance Piston Sleeve
105
Balance Piston Cover
107
Thrust Bearing Block
107
Bearing Cover
115
Unloader Piston and Unloader Cylinder
115
Unloader Cover
117
Shaft Seal Block
119
Disassembly and Assembly of the Unloader Indicator
120
Chapter 6 Troubleshooting
127
01: Compressor Does Not Start up
127
10: Capacity Control Malfunction
134
Chapter 7 Related Documents
138
Exploded Views, Sectional Views
138
Parts Configuration Table
145
Maintenance Data
171
Lock Nuts
173
Thrust Bearing Gland
174
O-Rings Used
175
Gaskets Used
176
Tools for Disassembly
177
4
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mycom 200SUD Specifications
General
Brand
mycom
Model
200SUD
Category
Air Compressor
Language
English
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