Liebert XDP 4.0 MICROPROCESSOR CONTROL

Microprocessor Control

20

4.0 MICROPROCESSOR CONTROL

4.1 Feature Overview

The microprocessor control for the Liebert XDP features an easy-to-use menu-driven LCD. The

menus, control features and circuit board details are described in this section.

Figure 22 User interface

Active alarms are displayed on the LCD screen and sound an audible beep. To silence an alarm, press

the Alarm Silence/Help key as prompted on the display.

Setpoints, DIP switch settings and other selections were made during factory testing of the unit based

on typical operating conditions. (Other default selections were made according to options included

with the unit.)

ADJUST THE FACTORY DEFAULTS ONLY IF THEY DO NOT MEET YOUR SPECIFICATIONS.

Allowable ranges are displayed by pressing the Help key. A password will be required (if enabled) to

change setpoints, time delays, etc.

The display normally shows the leaving refrigerant temperature on the first line and alternates

between the dew point and the number of alarms present on the second line.

4.1.1 Display

To turn the unit On, press the On/Off (I/O) key after power is applied to the Liebert XDP.

To turn the unit Off, press the On/Off (I/O) key before power is disconnected.

Table 12 User interface keypad functions

Keypad Function

On/Off (I/O) Turns the unit On or Off (top far left keypad)

Menu Enables the user to access the program menu to change setpoints, alarms, etc. (top near left)

Up Arrow Key Raises the value of displayed parameter while in a set mode (set points, time, etc).(arrow, top

near right)

Escape (Esc) Allows user to move back to a previous menu (top far right)

Alarm Silence If an alarm is present, press this key to silence the alarm. Help text will appear if this key is

pressed when no alarm is present (bottom left)

Down Arrow

Key

Lowers the value of displayed parameter while in a set mode (set points, time, etc).(arrow,

bottom near right).

Enter After setting a control value, press ENTER to store the information in the microprocessor

(bottom right).

Up Arrow Key

Status Display

On/Off Key

Alarm Silence Key

Down Arrow Key

Contents

Main GENERAL SAFETY GUIDELINES ! NOTICE Fluorinated Greenhouse Gas RequirementsEuropean Union R XD P 160 1 TABLE OF CONTENTS Page FIGURES TABL ES Page 1.0 PRODUCT DESCRIPTION 1.1 General Product Information Chilled Water 1.1.1 Product/System Description 1.2 Equipment Inspection 1.3 Equipment Handling 1.3.1 Handling With Skid 1.3.2 Removal from Skid Page 1.3.3 Removing Piano Jacks 1.4 Mechanical Considerations 1.4.1 Positioning the Liebert XDP Floor Cutout Dimensions Unit Dimensional Data Figure 8 Dimensions Figure 9 Piping access points Table 2 Unit piping outlet connection sizes, inches, OD Cu 1.5 Electrical Information 1.6 High Voltage Connections 1.6.1 Connecting High-Voltage Cables Disconnect Switch Status Lamps User Interface Front of Liebert XDP Page Page Field ConnectionsAll Units Field ConnectionsOptional for All Units 2.0 P 2.1 European Union Fluorinated Greenhouse Gas Requirements 2.2 Connection Sizes 2.2.1 Recommended Pipe Size 2.3 Liebert XDP Interconnection with Liebert XD Cooling Modules 2.4 Piping Installation Method 2.4.1 Bypass Flow Controller Piping 13 Figure 17 Bypass flow controller details, dimensions Figure 18 Bypass flow controller arrangement Figure 19 Bypass flow controller piping 7/8 (22mm) ID 4 (102mm) NOTICE 2.6 Checklist for Proper Installation 3.0 CHECKLIST FOR LIEBERT XDP STARTUP 3.1 Filling the Pumped CircuitR-134a Table 7 System refrigerant charge for the supply and return mains 3.1.1 Calculating Refrigerant ChargeExample 4.0 MICROPROCESSOR CONTROL 4.1 Feature Overview 4.1.1 Display 4.2 Controls 4.2.1 Feature Overview 4.3 Main Menu 4.3.1 Viewing or Changing Settings 4.3.2 SETPOINTS MIN TEMP SP HIGH CW TEMP HI AIR TEMP LOW AIR TEMP 4.3.6 TIME 4.3.7 DATE 4.3.8 SETUP OPERATION RESTART TIME DELAY C/F DEGREES PUMP WAIT TD PUMP OFF TD LEAD PUMP DPSWCH VALVE TIME 4.3.9 Password SecuritySETPT PASSWORD and SERVICE PASSWORD Change PasswordSETPT PASSWORD Change PasswordSERVICE PASSWORD 4.3.10 CALIBRATE SENSOR 4.3.11 ALARM ENABLE 4.3.12 ALARM TIME DELAY 4.3.13 COM ALARM ENABLE 4.3.14 CUSTOM ALARMS 4.3.15 CUSTOM TEXT 4.3.16 DIAGNOSTICS 5.0 ALARM DESCRIPTIONS AND SOLUTIONS 5.1 Alarm Descriptions 5.2 Red and Green Lamp Indicators 5.3 Alter Alarm Settings 5.3.1 Enable or Disable Alarms 5.3.2 Increase or Decrease Alarm Time Delays 5.4 System Shutdown Causes Unit Is Off By Refrig Sens Fail Unit Is Off By High CW Temp Unit Is Off By Pump Short Cycle Unit Is Off By Low Refrig Temp 6.0 T Table 16 Troubleshooting the XDP 7.0 M 7.1 Fluorinated Greenhouse Gas Requirements 8.0 S Table 17 Liebert XDP160 specifications Ensuring The High Availability 0f Mission-Critical Data And Applications. Technical Support / Service Locations