Page 3 - Table of Contents
Table of Contents P RODUCT M ODEL I NFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.0 I NTRODUCTION 1.1 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1...
Page 4 - ii
4.0 M AINTENANCE 4.1 Refrigeration System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.1.1 Suction Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.1.2 D...
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Page 16 - Installation
Figure 2A General piping arrangement—8- and 10-ton air cooled models 9A Installation
Page 17 - Table 5A; Model Numbers
Figure 2B Cabinet and floor planning dimensional data—8- and 10-ton air cooled models Table 5A Dimensional data, 8- and 10-ton air cooled Model Numbers Dimensional Data in. (mm) Module Weight Net. Ibs.(kg) 60 HZ 50 HZ A B C D PF096A PS095A 77 (1956) 39-1/4 (997) 38-1/2 (978) 5-1/2 (140) 750 (340) PS...
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Page 29 - A.1 Product Description; Refrigerant Charge; attached to the pump with a cable tie.; Figure 3A; shows the flow and pressure characteristics.; NOTE; important that the pump be properly primed before operating.
4 A .0 8- AND 10- TON P ROCESS C HILLER U SER M ANUAL S UPPLEMENT 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...
Page 30 - Figure 3A —Process chiller pump performance, 60 Hz; Maintenance
Figure 3A —Process chiller pump performance, 60 Hz 18B Maintenance
Page 31 - Figure 3B; shows a schematic representation of this piping system.; Figure 3B Piping bypass to evaporator inlet; shows the connections to the control board.; Figure 3C Electronic hot gas bypass valve
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 con- troller. This control provides a precise method of capacity control by bypassing hot gas to the evaporator inlet. Figure 3B shows a schematic r...
Page 32 - ers are factory-set to the following pins:
Figure 3D Electronic h ot gas bypass control board connections The sensor, 24 VAC power, and the electronic valve are factory-wired to the control board. Jump- ers are factory-set to the following pins: P7—Temperature sensor enable selectorP9—“Close on rise” logic selectorP12—Valve selector In addit...
Page 33 - A.3 Temperature Setpoint for Chiller; Figure 3E; shows the; Figure 3E Temperature sensor resistance; OH
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 tem- perature in degrees Fahrenheit. Turn the potentiometer to the desir...
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Page 64 - Precision Cooling
Ensuring The High Availability0f Mission-Critical Data And Applications. Emerson Network Power, the global leader in enabling business-criticalcontinuity, ensures network resiliency and adaptability througha family of technologies—including Liebert power and coolingtechnologies—that protect and supp...