Precision Cooling For Business-Critical Continuity Liebert Process Fluid Chiller™ User Manual - 1.
Table of Contents PRODUCT MODEL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 1.0 INTRODUCTION 1.1 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 Optional Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2.1 1.3 Refrigerant Gauges and Reservoir Heater . . . . . . . . . . . . . .
.0 MAINTENANCE 4.1 Refrigeration System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.1.1 4.1.2 4.1.3 4.1.4 4.1.5 4.1.6 4.1.7 Suction Pressure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Discharge Pressure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Superheat . . . . . . . . . . . . . . . . . . . . . .
Figures Figure 1 Figure 2 Figure 2A Figure 2B Figure 2C Figure 2D Figure 3 Figure 3A Figure 3B Figure 3C Figure 3D Figure 3E Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Dimensional Data and Piping Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Figure 2A General piping arrangement—8- and 10-ton air cooled models 9A Installation
Figure 2B Cabinet and floor planning dimensional data—8- and 10-ton air cooled models A C Table 5A Dimensional data, 8- and 10-ton air cooled Dimensional Data in. (mm) Model Numbers Module Weight Net. Ibs.
Figure 2C Electrical field connections—8- and 10-ton air cooled models 9C Installation
Figure 2D Cabinet and floor planning dimensional data, 8- and 10-ton air cooled with thermal storage tank cabinet 30" A C Table 5B Dimensional Data, 8-10 ton air-cooled models with thermal storage tank cabinet Model Numbers 60 Hz A B C D E Module Weight Storage Tank (empty*) lbs (kg) PS096A 77 (1956) 39-1/4 (997) 38-1/2 (978) 5-1/2 (140) 69-1/4 (1759) 1170 (531) PS120A Dimensional Data in (mm) Capacity gal (L) 100 (380) * Note: Add weight of fluid for operating weight Installation 9D
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4A.0 8- AND 10-TON PROCESS CHILLER USER MANUAL SUPPLEMENT 4A.1 Product Description The 8- and 10-ton process chiller is a self-contained air cooled system, containing two (2) scroll compressors and two (2) heat exchangers. An optional 2 HP multistage stainless steel pump may be included (see model number) to overcome the high pressure drop found in some MRI and CT systems. 4A.1.1 Additional Equipment The chiller includes a panel of gauges attached to the end of the cabinet.
Figure 3A —Process chiller pump performance, 60 Hz 18B Maintenance
4A.2 Temperature Control for 8- and 10-Ton Process Chiller Liebert 8- and 10-ton process chillers include a Sporlan Electronic Hot Gas Bypass Valve and controller. This control provides a precise method of capacity control by bypassing hot gas to the evaporator inlet. Figure 3B shows a schematic representation of this piping system.
Figure 3D Electronic hot gas bypass control board connections The sensor, 24 VAC power, and the electronic valve are factory-wired to the control board.
4A.3 Temperature Setpoint for Chiller The temperature setpoint for the chiller should be set by turning the potentiometer. To obtain an accurate setpoint, connect a voltmeter (millivolt) to TP1 and TP2. The readout will display temperature in degrees Fahrenheit. Turn the potentiometer to the desired setpoint. A “well” sensor is factory-piped and wired to accurately measure the temperature of the water leaving the chiller. This sensor provides input to the Electronic Hot Gas Bypass Controller.
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Ensuring The High Availability 0f Mission-Critical Data And Applications. Emerson Network Power, the global leader in enabling business-critical continuity, ensures network resiliency and adaptability through a family of technologies—including Liebert power and cooling technologies—that protect and support business-critical systems. Liebert solutions employ an adaptive architecture that responds to changes in criticality, density and capacity.
