Emerson DE - Manual

Emerson DE

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Table of Contents:

  • Page 3 – TABLE OF CONTENTS; GLYCOOL
  • Page 4 – ii
  • Page 5 – iii
  • Page 6 – iv
  • Page 9 – Introduction; NTRODUCTION; System Description
  • Page 11 – Initial Start-Up Procedure; NITIAL; breakers, open them instead of removing fuses.; Microprocessor Controls Setup; or to; Advanced Microprocessor with Graphics Control; Additional Considerations for Upflow Units; Consult Liebert Applications Engineering for more information.; WARNING
  • Page 12 – Advanced Microprocessor Controls Setup; DVANCED; section. For more control details refer to; cessor Controls; , and for more alarm information refer to; tions; Basics; . These keys are used to move through the menus as prompted on; Figure 2; displayed and may require a password, if enabled.; Figure 1; Display the Main Menu—AM Control
  • Page 14 – testing. Check the unit delivery date to see if this is the case.; NOTE
  • Page 15 – Analog; Setpoint
  • Page 16 – Setup Operation; IR Fill Rate; This feature will flush the respective coil for three; Table 2; Function; Cold Start Time Delay*
  • Page 17 – Select Options; password feature if set to OFF.; Table 3
  • Page 18 – Dehumidification with Normal or Delayed Reheat:; Select Control Type; INTELLIGENT; - Response by Control Type—Advanced Microprocessor Controls; Setup Alarms; CAUTION
  • Page 19 – you can create your own message.; Standard Alarm; Alarm
  • Page 20 – Standard Alarm Messages; For more information concerning alarms, see; Humidity Control Method; For installation of analog sensors, see; sor Controls; itor the sensor as follows:
  • Page 21 – Set Status Display; Device
  • Page 22 – Test Outputs; protected by a battery backup.
  • Page 23 – displayed, pressing the MENU/ESC key returns to the Status Display.; Load Control Features; operating conditions have been met.; Control Circuit Board; configuration. The jumpers should be placed as follows:; The LED backlighting on the text (4 x 20) display is always lit.
  • Page 24 – the LCD display and are also described in more detail in; Communications; monitoring system you are using.; Liebert Site Product Device; toring system; Table 6; LED
  • Page 26 – Advanced Microprocessor with Graphics Control Setup; described in this section. For more details on the control refer to; Advanced Microprocessor Controls; for details on the alarms refer to; and Solutions; Figure 3; . These keys are used to move through the menus as prompted on the LCD; Figure 4
  • Page 28 – Display the Main Menu—AG Control; shrinking water drop is shown next to the word “Dehumidification”.; See
  • Page 29 – Table 7
  • Page 30 – Selecting SETUP CUSTOM ALARMS will step to the following menu:; Standard Custom Alarm Mes-; Standard Custom Alarm Messages; Installation—LT750 DIP Switch Settings
  • Page 31 – control is calling for the system to do.
  • Page 32 – Cold Start Delay; units. Typically, only air cooled units need a “Winter; Auto Restart Delay; for which they can be programmed.; Table 9
  • Page 33 – will; PROPORTIONAL; Response by Control Type—Advanced Microprocessor Controls; Option
  • Page 36 – Dehumidification with Normal or Delayed Reheat; The date and time are backed up by a battery.; Number
  • Page 37 – Slope
  • Page 38 – or a custom text alarm. See; Load Control Features; Sequential Load Activation Control
  • Page 39 – Control Circuit Board; for other configurations
  • Page 40 – Proportional, Derivative and Integral Gains; Control output LEDs
  • Page 41 – rithm/control type selected in setting up the controls.; Temperature Control; Proportional Control; together three individual terms -; trol Features; Intelligent Control; would take if manually controlling the system (see; Intelligent Control on page 35
  • Page 42 – When GLYCOOL; Dual Cooling Source; water temperature is 3; Chilled Water Cooling
  • Page 43 – Humidity Control; Normal or Delayed Reheat (for Two-Stage Dehumidification Only); Switches
  • Page 44 – Dual Cooling Source Dehumidification; dehumidification system.; Chilled Water Dehumidification; ment for dehumidification from 0 to 100%.; System Activation; inputs are the usual setpoint and sensitivity adjustments.; PID Control; sional retuning is required for optimum performance.
  • Page 45 – Suggested System Tuning Procedure; same amplitude from one peak to the next).; time between peaks x peak amplitude x 4
  • Page 46 – that are susceptible to mechanical wear or cycling.
  • Page 47 – Short Cycle alarm could occur.
  • Page 48 – Analog Sensors; the appropriate jumpers on the control circuit board. See; and; Figure 6; to the terminals as follows:; Figure 5; Terminal; Additional connections available after unit delivery; No jumper on; Analog input jumper location; ENLARGED AREA
  • Page 49 – Physical Connections; for more information.
  • Page 50 – Calibration; position
  • Page 52 – Alarm Descriptions and Solutions; LARM; Setup Alarms on page 10; Standard Alarms
  • Page 53 – informed of the alarm function and corrective action required.; Infrared Humidifiers
  • Page 54 – nostics to make sure the humidifier system is working properly.
  • Page 55 – Optional/Custom Alarms; or fire, and follow appropriate emergency procedures.
  • Page 56 – Component Operation and Maintenance, Checks and Adjustments; System Testing; done by temporarily changing the setpoints.; Cooling; come on. Disregard it. Return setpoint to the desired temperature.; Heating; return the setpoint to the desired temperature.; Humidification; On Chilled Water, GLYCOOL
  • Page 57 – between terminals 1 and 2 at plug P39.
  • Page 58 – Filters; Consult the factory for more information.; determined and corrected before returning the unit to operation.; mounts will produce vibration that may damage the unit.
  • Page 59 – TURN OFF ALL POWER TO THE UNIT AT THE DISCONNECT.; programming of the variable speed drive parameters.; Refrigeration System; will absorb moisture.
  • Page 60 – sures are listed in the following table.; Operation; Suction pressures; System; Discharge pressures; System Design
  • Page 61 – expansion valve through the side outlet distributor (refer to; Figure 7; if a higher evaporator temperature is required.; Figure 7; for the new balance to take place.
  • Page 62 – inspect all refrigerant lines for signs of oil leaks.; Figure 8
  • Page 63 – Shell and Tube Condensers; to; Testing Function of Valve; ferent manufacturers.
  • Page 64 – Mechanical Failure; would cause a future failure.; long rubber gloves in handling contaminated parts.; under the terms of the warranty, and the WARRANTY WILL BE VOID.
  • Page 65 – Compressor Replacement Procedure; charging the system with recovered refrigerant.; Humidifier; for periodic checks and maintenance.; hotter than lukewarm.
  • Page 66 – Changing Humidifier Lamps; Figure 9; Autoflush Infrared Humidifier Cleaning System; Steps 3 and 4 repeat as long as humidification is required.; Humidifier lamps
  • Page 67 – units, and in the middle section of downflow units.; Figure 10 Steam generating humidifier; and goes to normal operation. No drain is permitted until then.; the canister must be replaced; immediately and replace the canister with the identical part.
  • Page 68 – Controls; Figure 11 Run/drain switch; Replacing the Canister
  • Page 69 – The canister is now ready to be removed.; Fault Descriptions
  • Page 70 – Circuit Board Adjustments; Capacity
  • Page 71 – Figure 12 Steam generating humidifier control board; Electric Reheat; DIP switch settings for steam generating humidifier; may be required to meet specific application requirements.
  • Page 72 – Troubleshooting; ROUBLESHOOTING; Use this section in troubleshooting your unit. Also refer to; . Suggestions are grouped by product function for convenience.; pressurized pipes and tubes.; Blower troubleshooting
  • Page 73 – Compressor and refrigeration system troubleshooting; Symptom
  • Page 75 – Dehumidification troubleshooting
  • Page 76 – Humidifier—steam generator troubleshooting
  • Page 77 – Humidifier—infrared troubleshooting
  • Page 78 – Maintenance Inspection Checklist—Monthly; AINTENANCE
  • Page 79 – Maintenance Inspection Checklist—Semiannual; NOTES
  • Page 80 – Precision Cooling
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Precision Cooling
For

Business-Critical Continuity™

Liebert Deluxe System/3

™

Operation and Maintenance Manual
50 and 60 Hz, 6-30 Ton DX Systems (DH/DE/VH/VE); 12-60 Ton CW Systems (FH/UH)

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Summary

Page 3 - TABLE OF CONTENTS; GLYCOOL

i TABLE OF CONTENTS 1.0 I NTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 System Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1....

Page 4 - ii

ii 4.4 Main Menu (AG)—View/Set Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4.4.1 Active Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4.4.2 Alarm History Lo...

Page 5 - iii

iii 5.0 R ESPONSE BY C ONTROL T YPE —A DVANCED M ICROPROCESSOR C ONTROLS . . . . . . . . . . . 33 5.1 Temperature Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 5.1.1 Cooling/Heating Required, in Percent (%) . . . . . . . . ...

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