Hitachi 8E040341 Manuals

Manuals and User Guides for Hitachi 8E040341. We have 1 Hitachi 8E040341 manual available for free PDF download: Service Manual

Hitachi 8E040341 Service Manual (140 pages)

WATER COOLED WATER CHILLERS -MODULAR-R134a-SCREW TYPE

Brand: Hitachi | Category: Chiller | Size: 15.58 MB

Table of Contents
5
General Information
9
General Notes
10
Safety and Applied Symbols
11
Norms and Regulations
11
Product Guide
12
Classification of Water Chiller Models
12
Product Guide: Water Chillers
12
Control Functions
13
Control Functions on the Module
14
Water Control
17
Water Temperature Control
18
Compressor Control
21
Control for Recovery from Power Interruption (Option)
23
Prevention of Simultaneous Startup
24
Reverse Prevention Control
24
Control for Prevention of Wrong Operation and Wrong Settings
25
Demand Control
25
Forced Load up Capacity Control from External Signal
29
2-Temperature Setting Function
30
External Thermo Operation from External Contact
31
Water Temperature of the Control Target
33
Operation from DC24V Contact Input
34
Thermo off Function Selection
39
Selection of Enabling/Disabling of Alarm Release by Means of Remote Stop
40
Limitation Setting for Pump Feedback Waiting Time
41
Inlet Water Temperature Thermo off Function
42
Control of the Cooling Cycle
44
Compressor Control
44
Expansion Valve Control
45
Overcurrent Protection Control
47
Control of Master/Slave Group
48
Summary of Control of Master/Slave Group
48
Setting Method
48
Operation Method
49
Other Functions of the Control of Master/Slave Group
51
Setting Items
52
Method for Setting and Confirmation of Operation Conditions through the LCD Screen
54
Run Operation
56
Setting of Switches on the Setting PCB
56
Operation Control of the Module
57
Time Chart
58
Servicing
59
LCD Display for Service Menu
61
General Notes
69
Cycle Components
70
Compressor Removal
70
Overhaul Work
73
Recovering the Refrigerant
75
Replacement of the Condenser
75
Replacement of the Cooler
77
Replacement of Expansion Valve
78
Filter Drier
79
Replacement of the Check Valve
80
Replacement of the Stop Valve (with Check Joint)
81
Replacement of the High Pressure Switch (PSH)
81
Replacement of the Pressure Sensor (Pd)
81
Replacement of the Pressure Sensor (Ps)
81
Replacement of the Pressure Sensor (PSW)
82
Replacement of the Pressure Relief Valve
82
Replacement of the Sight Glass
82
Replacement of the Stop Valve (X3)
82
Repalacement of the Thermistor (Suction, Thms)
83
Replacement of the Thermistor (Discharge, Thmd)
83
Replacement of the Crankcase Heater (CH)
83
Replacement of the Thermistor (Evaporation, Thme)
84
Replacement of the Thermistor (Cooler Water Inlet, Thmwi)
84
Thermistor (Cooler Water Outlet, Thmwo2)
85
Thermistor (Cooler Water Outlet, Thmwo)
85
Replacement of the Solenoid Valves (Sva, Svb, Svc)
85
Electrical Components
86
The E-Box
86
Removal of the LCD Screen
86
Replacement of Lamps and Push Buttons
87
Access to Electrical Components
87
Removal of the Pcb's
89
Transformer (TF1)
91
Transformers (TF2, TF3, TF4)
91
Overcurrent Relay (ORC)
91
Contactors (CMC, CMCD, CMCS)
92
Fuses (EF1, EF2, EF3. EFR, EFS, EFT)
92
Fuses (PFC)
93
Relays
94
Main Switch
95
Troubleshooting
97
Inspection of Power Source and Connections
98
Inspection of PCB
99
Confirmation of Operating Value of Protection Devices and Automatic Operation Devices
99
Protection Control Function
100
Alarm Indication
101
Summary of Fault Diagnosis
102
Method for Fault Diagnosis
104
Troubleshooting by Alarm Code
105
Analysis and Countermeasure of Abnormalities
129
Thermistor Characteristics
135
Thermistor Temperature Characteristics (All Temperature Except Discharge Gas)
135
Thermistor Temperature Characteristics for Discharge Gas Temperature
135
Pressure Sensor Characteristics
136
High-Pressure Sensor
136
Low-Pressure Sensor
136
Procedures for Trouble
136

Hitachi Categories

Projector

Air Conditioner Drill Power Tool

More Hitachi Manuals

Hitachi 8E040341 Manuals

Hitachi 8E040341 Service Manual (140 pages)

Table of Contents

Related Products

Hitachi Categories