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Superfreezer CRR DF MP4000

- i Introduction
Chapter 1: Safety Precautions
- 1.1: Danger, Warning, Caution, and Notice
- 1.2: General Practices
- 1.3: Refrigerant Hazards
- 1.4: Electrical Hazards
  - High Voltage
  - Low Voltage
- 1.5: Electrostatic Discharge Precautions
  - Electrostatic Discharge and the Controller
- 1.6: Welding on Refrigeration Units or Containers
- 1.7: First Aid
- 1.8: Identifying Unit Safety and Warning Decals
- 1.9: Serial Number Location
  - Component Serial Number Identification
Chapter 2: Service Guide
Chapter 3: Specifications
- 3.1: Full Cool Operation Net Cooling Capacity
- 3.2: System Net Defrost Heating Capacity
- 3.3: Evaporator Airflow
- 3.4: R-134a Refrigeration System
- 3.5: R-23 Refrigeration System
- 3.6: Electrical System
- 3.7: Microprocessor Controller
- 3.8: Physical Specifications
- 3.9: Compressor Torque — 3D Copeland Compressor Bolt Torque
- 3.10: Metric Hardware Torque Charts
Chapter 4: Unit Description
- 4.1: General Description
- 4.2: Operating Modes
  - Frozen Loads
Chapter 5: Unit Operation
Chapter 6: Operating Instructions MP4000
- 6.1: Function Keys
  - Unit On/Off Key
- 6.2: Sequence of Operation
  - 6.2.1: Unit Start-up
  - 6.2.2: Initiating a Manual Defrost
  - 6.2.3: Pretrip Inspection (PTI)
  - 6.2.4: Lock Padlock
  - 6.2.5: Controller Back-up Battery
- 6.3: Controller Lockup Issue
- 6.4: Emergency Run Mode
Chapter 7: Controller Description
- 7.1: MP4000 Controller
  - Back-up Battery
  - Input and Output Signals
- 7.2: Standard Display
  - 7.2.1: Viewing Alarms/Messages from Standard Display
  - 7.2.2: Display Alternate Fahrenheit (F) or Celsius (C) Temperatures
  - 7.2.3: Changing Setpoint
  - 7.2.4: Main Menu
- 7.3: Keys and Indicator LEDs
Chapter 8: Navigating Controller Operating Menu
- Menu Scrolling Keys
- Changing Screen Contrast
Chapter 9: Main Menu
- 9.1: Main Menu
- 9.2: Values Menu
- 9.3: Controls Menu
  - 9.3.1: Temperature Setpoint
  - 9.3.2: Defrost Termination
- 9.4: Alarm Menu
  - Alarm Code States
  - Alarm Codes
- 9.5: Message Menu
- 9.6: Configuration Menu
  - Unit
  - Options
  - System
  - Clock
  - Calibrate
  - Icon Menu
- 9.7: Log View Menu
- 9.8: Info Menu
Chapter 10: Special Function Keys - User Activated Commands
- 10.1: PTI Key
- 10.2: PTI (Pretrip) Test
- 10.3: Defrost Key
- 10.4: PTI (Pretrip) Tests
  - 10.4.1: Manual Function Test
  - 10.4.2: Function Test
Chapter 11: Operating Theory
Chapter 12: Controller Maintenance
- 12.1: Controller Door Open and Close Instructions
- 12.2: Flashloading Controller Software
- 12.3: MP4000 Test System Tool
- 12.4: Controller Replacement
Chapter 13: Electrical Maintenance
Chapter 14: Refrigeration Maintenance
- 14.1: Introduction
- 14.2: Tools
- 14.3: Vacuum Pump
- 14.4: Filters and Cartridges
- 14.5: Refrigerant Recovery Equipment
- 14.6: Detecting Leaks
- 14.7: Special Service Fittings
- 14.8: Oil Acid Test
- 14.9: Checking Compressor Oil
- 14.10: Isolate Compressor
- 14.11: Service Valve Positions
- 14.12: Gauge Manifold Connections
- 14.13: Low Side Pump Down (R-134a Compressor Only)
- 14.14: Gauge Manifold Set
  - Using a New Gauge Manifold Set
  - Gauge Manifold Valve Positions
- 14.15: Gauge Manifold Set Installation and Removal
- 14.16: Checking Refrigerant Charge
  - 14.16.1: Checking the R-134a Refrigerant Charge
  - 14.16.2: Checking the R-23 Refrigerant Charge
- 14.17: Receiver Tank Sight Glass
- 14.18: Leak Testing Refrigeration System
- 14.19: Using Pressurized Nitrogen
- 14.20: Recovering Refrigerant from System
  - 14.20.1: Recovery for System Repair
    - R-134a Vapor Recovery
    - R-134a Liquid Recovery
- 14.21: Evacuation and Cleanup of Refrigeration System
  - 14.21.1: Unit Preparation and Hookup
  - 14.21.2: Unit Evacuation
  - 14.21.3: Pressure Rise Test
  - 14.21.4: Factors Affecting Speed of System Evacuation
  - 14.21.5: Heat Saves Time
- 14.22: Charging System with Refrigerant
- 14.23: Compressor Replacement
  - Removal
  - Installation
- 14.24: Condenser Coil Replacement
- 14.25: Filter Drier Replacement
  - Removal
  - Installation
- 14.26: Evaporator Expansion Valve (TXV) Replacement
- 14.27: Expansion Valve Replacement
  - Removal
  - Installation
- 14.28: Heat Exchanger Replacement
  - Removal
  - Installation
- 14.29: Receiver Tank Replacement
  - Removal
  - Installation
- 14.30: High Pressure Cutout Switch Replacement
  - Removal
  - Installation
- 14.31: Liquid Line Solenoid Valve Replacement (R-134a System Only)
  - Removal
  - Installation
Chapter 15: Diagnostics
- 15.1: Introduction
- 15.2: MP4000 Diagnostics
- 15.3: Mechanical Diagnostics
- 15.4: Refrigeration Diagnostics
- 15.5: Status Messages and Controller Actions
- 15.6: Alarm Codes and Corrective Actions
Chapter 16: Diagrams
- 16.1: Diagram Index

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Defrost Termination

Option lowering defrost termination temp, range 18 to 4°

Defrost Termination

Parent topic: Controls Menu

Last Updated : 04/16/2021

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