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Table of Contents
Related Manuals for Liebert MR1
Summary of Contents for Liebert MR1
- Page 1 I T E O N I T O R I N G Mini-Remote Environmental Monitor ANUAL...
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Page 3: Table Of Contents
TABLE OF CONTENTS Section 1: INTRODUCTION... 1 Specifications ... 1 Section 2: INSTALLATION ... 3 Mounting... 3 Electrical Connections... 5 Section 3: HARDWARE CONFIGURATION ... 7 DIP Switch Settings ... 7 Section 4: OPERATION... 9 LCD and Keypad ... 9 Setpoint Control... -
Page 4: Figure 1. Typical System Configuration
Figure 1. Typical System Configuration... -
Page 6: Section 1: Introduction
Small Systems Controllers. An LCD display provides temperature, humidity, status and alarm information. The MR1 provides both visual and audible annunciation of alarms from the Environmental unit. Unmarked “hidden” buttons allow the MR1 user to access setpoints and settings. Electrical Specifications: Voltage:... - Page 7 2 User Manual NOTE This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment operated environment.
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Page 8: Section 2: Installation
(Item 2) to the electric box with two (2) screws. 6. Snap display panel front onto the rear plastic part. 7. Apply power to the MR1. Operate the system to test status and alarm monitoring, and customer selected options including on/off control. -
Page 9: Figure 2A. Flush-Mount Installation
Figure 2a. Flush-Mount Installation 4 User Manual... -
Page 10: Electrical Connections
RS-422 communications is 1000 feet, and minimum of 22 gauge wire should be used for all field wiring. Power for the MR1 is supplied to TB3-1 and TB3-2. Maximum current draw is 0.3A at 24VAC. It is recommended that the MR1 be powered independently from an external 24VAC transformer;... -
Page 11: Figure 2B. Display Panel Mounted Remotely From Electrical Box
Figure 2b. Display Panel Mounted Remotely from Electrical Box 6 User Manual... -
Page 12: Section 3: Hardware Configuration
The following user selectable operations are set by DIP SW1 on the display panel circuit board: Refer to Table 2 and Figure 3. Position Audible beeper enabled Remote on/off disabled. On/off button affects MR1 operation only Optional alarm inputs disabled Common alarm follows alarm condition Table 2: DIP Switch Settings Note that factory default is OFF for all four positions. -
Page 13: Figure 3. Electrical Connections, Electric Box And Display
Figure 3. Electrical Connections, Electric Box and Display 8 User Manual... -
Page 14: Section 4: Operation
The alarm can be silenced by pressing the SILENCE button. On Small Systems Controls, silencing an alarm at the MR1 will also silence the alarm at the unit; on other microprocessors, an alarm that is no longer active can be reset from the MR1 by pressing the SILENCE button. -
Page 15: Setpoint Control
The F/C button will toggle between degrees Fahrenheit and degrees Celsius for the temperature display. The SET button will put the MR1 in the set mode. The SET icon in the upper left of the LCD will be displayed along with other icons to indicate which setpoint is being viewed or changed. - Page 16 Note that if the high/low temperature and humidity alarm setpoints are disabled at the unit controls, then the MR1 will display 00 for the setpoint. The MR1 is not able to remotely enable alarm setpoints. The MR1 will annunciate any alarm transmitted by the Environmental controls.
- Page 17 Alarm AM/AG High Temperature Low Temperature High Humidity Low Humidity High Head Pressure 1 High Head Pressure 2 Loss of Airflow Liquid Detected Change Filters Humidifier Problem No Water in Hum’fier Pan Standby Glycool Unit On Compressor 1 Overload Compressor 2 Overload Main Fan Overload Manual Override Smoke Detected...
- Page 19 With more than 500,000 installations around the globe, Liebert is the world leader in computer protection systems. Since its founding in 1965, Liebert has developed a complete range of support and protection systems for sensitive electronics: Environmental systems: close-control air conditioning from 1.5 to 60 tons.