Manuals
/
Brands
/
Kitchen Appliance
/
Refrigerator
/
Emerson
/
Kitchen Appliance
/
Refrigerator
Emerson
DE, DH, VE, VH manual
- page 8
1
8
80
80
Download
80 pages, 3.27 Mb
vi
Contents
Main
Page
TABLE OF CONTENTS
4.0 ADVANCED MICROPROCESSOR WITH GRAPHICS CONTROL SETUP. . . . . . . . . . . . . . . . . . . 18
Page
5.0 RESPONSE BY CONTROL TYPEADVANCED MICROPROCESSOR CONTROLS . . . . . . . . . . .33
7.0 COMPONENT OPERATION AND MAINTENANCE, CHECKS AND ADJUSTMENTS. . . . . . . . . . . .48
FIGURES
TABL ES
Page
1.0 I
1.1 System Description
Page
2.0 INITIAL START-UP PROCEDURE
2.0.1 Additional Considerations for Upflow Units
!WARNING
3.0 ADVANCED MICROPROCESSOR CONTROLS SETUP
3.1 Basics
3.2 Display the Main MenuAM Control
Advanced Microprocessor Controls Setup
5
Figure 2 Advanced microprocessor (AM) control menu
3.3 Main Menu (AM)Status/Alarm Data
3.3.1 Active Alarms
3.3.2 Operating Status
3.3.3 Alarm History Log
3.3.4 Run Hours Log
3.4 Main Menu (AM)Setpoints/Setup
3.4.1 View Setpoints Selection
3.4.2 Setup System Selection
Setup Operation
Select Options
Calibrate Sensors
Show DIP Switches
Select Control Type
Setup Alarms
Page
Standard Alarm Messages
Humidity Control Method
Analog Setup
Set Status Display
Calibrate Actuator
3.4.3 Run Diagnostics
Show Inputs
Test Outputs
3.5 Main Menu (AM)Date and Time
3.6 Main Menu (AM)Status Display
3.7 Load Control Features
3.7.1 Short Cycle Control
3.7.2 Sequential Load Activation Control
3.7.3 Compressor Sequencing Control
3.9 Communications
3.9.1 Monitor functions
3.9.2 View/Change Functions
4.0 ADVANCED MICROPROCESSOR WITH GRAPHICS CONTROL SETUP
4.1 Basics
Advanced Microprocessor with Graphics Control Setup
19
Figure 4 Advanced microprocessor with graphics (AG) control menu
4.2 Display the Main MenuAG Control
4.3 Main Menu (AG)Status Display
4.4 Main Menu (AG)View/Set Alarms
4.4.1 Active Alarms
4.4.2 Alarm History Log
4.4.3 Setup Alarms
4.4.4 Set Up Custom Alarms
Standard Custom Alarm Messages
4.4.5 View Water Detect Floor Plan (for optional LTM1000/LT750)
4.4.6 Setup Water Detect Floor Plan
InstallationLT750 DIP Switch Settings
4.5 Main Menu (AG)Operating Status
4.6 Main Menu (AG)View/Set Control Setpoints
4.7 Main Menu (AG)Setup System
4.7.1 Setup Operation
Cold Start Delay
Auto Restart Delay
IR Flush Overfill (infrared humidifiers only)
Chilled Water/Hot Water/Econ-O-Coil Flush
4.7.2 Select Options
4.7.3 Calibrate Sensors
4.7.4 Calibrate Valve Actuator
4.7.5 Select Control Algorithm
4.7.6 Select Humidity Sensing Mode
4.8 Main Menu (AG)Run Diagnostics
4.8.1 Show Inputs
4.8.2 Test Outputs
4.8.3 Test Control Board
4.8.4 DIP Switches
Dehumidification with Normal or Delayed Reheat
4.9 Main Menu (AG)Date and Time
4.10 Main Menu (AG)Plot Graphs
4.10.1 Modify Plot Scales
4.11 Main Menu (AG)Analog/Digital Inputs
4.11.1 Read Analog Inputs
4.11.2 Setup Analog Inputs
Slope
Intercept
4.12 Main Menu (AG)View Run Hours Log
4.12.1 View 24 Hour Run Time History
4.12.2 View Total Run Hours
4.13 Load Control Features
4.13.1 Short Cycle Control
4.14 Control Circuit Board
4.14.1 LCD Display Contrast
4.14.2 Nonvolatile Memory
4.14.3 DIP Switches
4.14.4 Control Outputs
4.15 Communications
4.15.1 Monitor functions:
4.15.2 View/Change Functions:
5.0 RESPONSE BY CONTROL TYPEADVANCED MICROPROCESSOR CONTROLS
5.1 Temperature Control
5.1.1 Cooling/Heating Required, in Percent (%)
5.1.2 Response to Control Types Proportional Control
PID Control
5.1.3 Cooling Operation Two-Step Cooling, Compressorized Direct Expansion (DX) Systems
Four-Step Cooling, Compressorized Direct Expansion (DX) Systems)
GLYCOOL Cooling
Dual Cooling Source
Chilled Water Cooling
5.2 Humidity Control
Dual Cooling Source Dehumidification
Chilled Water Dehumidification
5.2.4 Humidification Operation System Activation
5.2.5 Control Types Proportional Control
PID Control
Suggested System Tuning Procedure
Intelligent Control
5.3 Load Control Features
5.3.1 Short Cycle Control
5.3.2 Sequential Load Activation Control
5.3.3 Compressor Sequencing Control
5.4 Analog Sensors
5.4.1 Connecting the Analog Sensors
5.4.2 Water Detection Display
Physical Connections
Setup
Calibration
5.5 Communications
5.5.1 Monitor functions:
5.5.2 View/Change Functions:
6.0 ALARM DESCRIPTIONS AND SOLUTIONS
6.1 Standard Alarms
6.1.1 Change Filter
6.1.2 Compressor Overload
Page
6.1.10 Loss of Air Flow
6.1.11 Loss of Power
6.1.12 Low Humidity
6.1.13 Low Suction Pressure
6.1.14 Low Temperature
6.2 Optional/Custom Alarms
7.0 COMPONENT OPERATION AND MAINTENANCE, CHECKS AND ADJUSTMENTS
7.1 System Testing
7.1.1 Environmental Control Functions
Cooling
Heating
Page
7.2 Filters
7.3 Blower Package
7.3.1 Fan Impellers and Bearings
7.3.2 Belts
7.3.3 Electronic Variable Speed Drive (Inverter)
7.4 Refrigeration System
7.4.1 Compressor Oil Level
7.4.2 Suction Pressure
7.4.3 Discharge Pressure
7.4.4 Suction Superheat
7.4.5 Thermostatic Expansion Valve
Adjustment
7.4.6 Hot Gas Bypass Valve
Adjustment
7.4.7 Air Cooled Condenser
Checking Refrigerant Charge (LeeTemp/ Flood Back Head Pressure Control)
7.4.8 Water/Glycol Cooled Condensers Shell and Tube Condensers
Regulating Valves
Adjustment (Johnson Controls/Penn Johnson valves)
Testing Function of Valve
Glycol Solution Maintenance
7.4.9 Compressor Replacement
Mechanical Failure
Electrical Failure
Compressor Replacement Procedure
7.5 Humidifier
7.5.1 Infrared Humidifier
Changing Humidifier Lamps
Autoflush Infrared Humidifier Cleaning System
Autoflush Operation
7.5.2 Steam Generating Humidifier
Controls
Replacing the Canister
Page
Circuit Board Adjustments
7.6 Electric Reheat
8.0 T
Table 22 Chilled water troubleshooting
Table 23 Compressor and refrigeration system troubleshooting
Table 23 Compressor and refrigeration system troubleshooting (continued)
Table 24 Dehumidification troubleshooting
Table 25 Glycol pumps troubleshooting
Table 23 Compressor and refrigeration system troubleshooting (continued)
Table 26 Humidifiersteam generator troubleshooting
Table 27 Humidifierinfrared troubleshooting
Table 28 Reheat troubleshooting
Table 26 Humidifiersteam generator troubleshooting (continued)
9.0 MAINTENANCE INSPECTION CHECKLISTMONTHLY
10.0 MAINTENANCE INSPECTION CHECKLISTSEMIANNUAL
Ensuring The High Availability 0f Mission-Critical Data And Applications.
Technical Support / Service
Locations