Emerson Fluid Chiller Guía para resolver problemas Pagina 68
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- Tabla de contenidos
- SOLUCIÓN DE PROBLEMAS
- MARCADORES
Valorado. / 5. Basado en revisión del cliente
64
Symptoms Causes Corrective Action
Doesn't Flow Valve Isn't Open Turn Stem
Leak at Access Schrader Valve Schrader Valve Isn't Tight Tighten Schrader Valve
Leak at Stem Valve Stem is Leaking Replace Valve
Excessive Pressure Drop Valve Isn't Fully Open Turn Stem to Open Valve
Troubleshooting Ball Valves
Special Considerations For Industrial Solenoid Valves
Symptoms Causes Corrective Action
High Internal Seat Leakage (high temperature
steam up to 400°)
Wrong Seat Elastomer Used (Buna N) Use Valve with Teflon Seat Elastomer
External Leakage (high temperature steam up to
400°)
Wrong Gasket Material Used (Neoprene) Use Ethylene Propylene Gasket
High Internal Seat Leakage (high temperature
steam up to 250° or water up to 210°)
Wrong Seat Elastomer Used (Buna N)
Use Valve with Ethylene Propylene Seat
Elastomer
External leakage (high temperature steam up to
250° or water up to 210°)
Wrong Gasket Material Used (Neoprene) Use Ethylene Propylene Gasket
Suction Line Accumulators
Problem Causes Corrective Action
Oil Not Returning to Compressor
Bleed Hole in U-Tube Plugged
Replace Accumulator; Install Filter Ahead of
Accumulator
U-Tube Broken Off Replace Accumulator
Accumulator Too Large for Application Replace with Smaller Accumulator
Accumulator Installed Incorrectly Re-Install with Correct Inlet & Outlet Connections
Troubleshooting Storage Devices
Allowable Pressure Drop -- Permanent Installation
Refrigerant
Evaporator Temperature
40°F 20°F 0°F -20°F -40°F
R12, R134a 2.0 1.5 1.0 0.5 -
R22, R410A 3.0 2.0 1.5 1.0 0.5
R502, R404A/507 3.0 2.0 1.5 1.0 0.5
Troubleshooting System Protectors
Liquid Refrigerant Receivers
Problem Causes Corrective Action
Flashing In Liquid Sight Glass Downstream Of
Receiver
Receiver Outlet Not Fully Open Open Valve Fully
On Receivers with Top Outlet Connections, the
Dip Tube may be Broken Off Or Plugged
Replace Receiver
Receiver Installed Upside Down Re-Install Receiver Correctly
- 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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