Small air-cooled water chillers
Contents
1 Introduction
1.1 About This Manual
Part 1
System Outline 1-1
1 General Outline
1.1 What Is in This Chapter
1.2 Technical Specifications
1.3 Electrical specifications
1.4 Outlook Drawing
2 Piping Layout
2.1 What Is in This Chapter
2.2 Functional Diagram Refrigeration Circuit for EUWA5-30HB/C(Z)
2.3 Main Parts Refrigeration Circuit for EUWA5-30HB/C(Z)
2.4 Functional Diagram Refrigeration Circuit for EUWY5-30HB/C,
EUWA5-30HB/C with Glycol Application
2.5 Main Parts Refrigeration Circuit EUWY5-30HB/C, EUWA5-30HB/C
with Glycol Application
3 Wiring Layout
3.1 What Is in This Chapter
3.2 Main functions of the chiller
3.3 Wiring Diagrams
3.4 Field Wiring
Part 2
Functional Description 2-1
1 Functional Control
1.1 What Is in This Chapter
1.2 Operation Range
1.3 Operation Flowchart
1.4 Defrost Principle (only for EUWY5-30HB/C(Z))
1.5 Defrost Circuit Control
1.6 Thermostat Control
1.7 Head Pressure Control for EUWA/Y5-10HB(Z)
1.8 Head Pressure Control for EUWA/Y15-30HC(Z)
1.9 Freeze-up Control
2 The Controller for the EUWA/Y5-10HB(Z) Chillers
2.1 What Is in This Chapter
2.2 The EUWA/Y5-10HB(Z) Controller
2.3 Start/Stop, Cool/Heat and Temperature Setting
2.4 What Happens in Case of an Alarm or a Warning
2.5 Settings: Direct and User Parameters
2.6 How to Read or Adjust Parameter Settings: the Programming Procedure
3 The Controller for the EUWA/Y15-30HC(Z) Chillers
3.1 What Is in This Chapter
3.2 The EUWA/Y15-30HC(Z) Controller
3.3 Start/Stop, Cool/Heat and Temperature Setting
3.4 What Happens in Case of an Alarm
3.5 Menu Overview
3.6 How to Read or Adjust Parameter Settings: the Programming Procedure
3.7 Read-out Menu
3.8 Set Points Menu
3.9 User Settings Menu
3.10 Software Timers Menu
3.11 History Menu
3.12 Info Menu
3.13 Input /Output Menu
3.14 Password Menu
Part 3
Troubleshooting 3-1
1 Overview of Inputs and Outputs
1.1 What Is in This Chapter
1.2 Overview of Inputs and Outputs of EUWA/Y5-10HB(Z)
1.3 Overview of Inputs and Outputs of EUWA/Y15-30HC(Z)
2 Overview of Fault Indications and Safeties
2.1 What Is in this Chapter
2.2 Fault Indication EUWA/Y5-10HB(Z)
2.3 Fault Indication EUWA/Y15-30HC(Z)
2.4 Safeties Overview
3 Checking the Inputs and Outputs
3.1 What Is in This Chapter
3.2 Checking the Temperature Sensors
3.3 Checking the Digital Inputs and Outputs
3.4 Checking the Power Supply and Fuses
4 Troubleshooting
4.1 What Is in This Chapter
4.2 Items to Be Checked
4.3 General Repair Procedures
4.4 Unlocking the Keyboard
4.5 Procedure for controller Changing (EUWA/Y5-10HB(Z)
4.6 Procedure for PCB Changing (EUWA/Y15-30HC(Z)
4.7 Procedure to Set the Carell Controller
4.8 Control of function of 4 way valve(EUWY5-30HB/C)
Part 4
Commissioning and Test Run 4-1
1 Pre-Test Run Checks
1.1 What Is in This Chapter
1.2 General Checks
1.3 Water Piping Checks
1.4 Electrical Checks
2 Test Run & Operation Data
Part 5
Maintenance 5-1
Index i
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