Emerson Fluid Chiller Guide de dépannage Page 3
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- Table des matières
- DEPANNAGE
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Introduction
This Technical Guide from Emerson Climate Technologies provides a detailed
explanation on the operation of common refrigeration system components such
as thermal expansion valves, solenoid valves, system protectors, regulators, oil
controls and temperature pressure controls. Also included in this guide is a listing
of the basic rules of good practice and a detailed troubleshooting guide. This guide
is designed to ll a need which exists for a concise, elementary text to aid service-
men, salesmen, students and others interested in refrigeration and air conditioning.
It is intended to cover only the fundamentals of refrigeration and air conditioning
theory and practice. Detailed information for specic products is available from
manufacturers of complete units and accessories. Used to supplement such
literature, and to improve general knowledge of refrigeration and air conditioning,
this guide should prove to be very helpful.
Emerson Climate Technologies, a business of Emerson, is the world’s leading
provider of heating, ventilation, air conditioning and refrigeration solutions for
residential, industrial and commercial applications. The group combines best-in-
class technology with proven engineering, design, distribution, educational and
monitoring services to provide customized, integrated climate-control solutions for
customers worldwide. Emerson Climate Technologies’ innovative solutions, which
include industry-leading brands such as Copeland Scroll
®
and White-Rodgers
®
,
improve human comfort, safeguard food and protect the environment.
Emerson Climate Technologies - Flow Controls Division is a leading manufacturer
of valves, controls and system protectors commonly applied in air conditioning and
refrigeration systems worldwide. The company continues to pioneer the control of
refrigerant ow through innovative, high performance components, such as thermal
expansion valves and lter driers.
- Technical 1
- Help Guide 1
- Introduction 3
- Table of Contents 4
- Thermal Expansion 5
- Thermal Expansion Valves 6
- Internal Equalizer 6
- Factory Settings of TXVs 7
- External Equalizer 7
- Superheat 9
- Approximate Methods 9
- Superheat Adjustment 9
- TXV Selection 10
- Application Tips 11
- Remote Bulb Well 11
- Remote Bulb Location 11
- Operation at Reduced Capacity 12
- Gas & Gas Cross-Charges 14
- Which Charge to Use? 14
- Adsorption Charges 14
- Liquid Cross-Charges 14
- Other TXV Considerations 15
- Refrigerant Code Names 16
- Emerson MOP 16
- TXV Charge Code Selector 17
- Electronic Valves 18
- & Controls 18
- Electronic Valve Applications 19
- Emerson Climate Technologies 20
- EC3-32 and EC3-33 Systems 20
- Temperature Sensor ECN-N60 20
- Pressure Transmitter – PT4 21
- TXV Controller – EC3-X32 21
- TXV Controller – EC3-X33 22
- Universal Driver – EXD-U00 22
- XEV22 Superheat Controller 22
- Electrical Control Valve – EX 23
- Third Party Controller 23
- Electronic Valves Programming 24
- Solenoid Valves 25
- What Are Solenoid Valves? 26
- 2. Pilot Operated Valve 27
- Types of Solenoids 27
- 2-Way Valves 27
- Solenoid Valve Selection 28
- Application Overview 29
- System Protectors 30
- Absorption vs. Adsorption 32
- Types of Filter driers 32
- Dirt, Waxes, Acid 32
- Sightglass 33
- Suction Filter Driers 34
- Internal Design 35
- Compressor Burnout 36
- Filter Driers for Heat Pumps 37
- Removing Contaminants 37
- One-Way Flow, Both Directions 37
- Simplifying While Servicing 38
- Emerson System Protectors 38
- Regulators 39
- EVAPORATOR 40
- INTERMEDIATE 40
- Figure 3: EPRB(S) Brass Body 41
- (Emerson EPRB) 42
- HeadMaster HP Operation 43
- solenoid VAlVe 46
- Figure 8 47
- Adjusting the Set Point 48
- Oil Controls 49
- Emerson Oil Controls 50
- Temperature 51
- Pressure Controls 51
- Temperature Pressure Controls 52
- TS1 Introduction 52
- Housing Variants 52
- Temperature Sensing 52
- Setpoints 53
- Electrical Contacts 53
- Contact Function 53
- PSC Pressure Switch 56
- PSC Introduction 56
- FSX Introduction 57
- Basic Rules of 58
- Good Practice 58
- Basic Rules of Good Practice 59
- Troubleshooting 61
- SYSTEM TROUBLESHOOTING GUIDE 62
- No Superheat At Start Up Only 63
- Superheat Is Erratic Or Hunts 63
- Troubleshooting Ball Valves 68
- Troubleshooting Regulators 69
- R404A/R507A 70
- Wholesaler/Contractor Support 72
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