Download Process Fluid Chiller

HEAT REMOVAL /ENVIRONMENTAL CONTROL
Process Fluid Chiller
USER MANUAL
1.5 - 10 Tons
50 & 60 Hz
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Accessory Equipment (Ship with Kits) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3.1
1.3.2
1.3.3
1.3.4
1.3.5
1.3.6
1.3.7
1.3.8
1.3.9
1.3.10
1.3.11
Emergency Water Source Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Water Level Control and Alarm System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid Pressure Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dial Thermometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Relief Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Setter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ball Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High Temperature Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Flow Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RCM8 Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
3
3
4
4
4
4
4
4
4
4
2.0
INSTALLATION
2.1
Equipment Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2
Location Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3
Piping Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.4
Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.5
Preparation of Glycol Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.6
Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.0
OPERATION
3.1
Pre-Startup Checklist. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2
Startup Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.3
Overview of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.4
Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.5
Low Pressure Switch Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.6
Temperature Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.7
High Pressure Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.8
Positive Start Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.9
Short Cycle Prevent Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
i
4.0
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermostatic Expansion Valve Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hot Gas Bypass Valve Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Cooled Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compressor Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13
13
13
14
14
15
15
4.2
Chilled Fluid Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2.1
Pump Differential Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2.2
Pump Suction Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.3
Refrigerant Gauges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.4
Reservoir Heater. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.5
Reservoir Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4A.
8- AND 10-TON PROCESS CHILLER USER MANUAL SUPPLEMENT
4A.1
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18A
4A.1.1 Additional Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18A
4A.2
Temperature Control for 8- and 10-Ton Process Chiller . . . . . . . . . . . . . . . . . . . . . . . . 18C
4A.3
Temperature Setpoint for Chiller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18E
4A.4
Flow Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18E
5.0
TROUBLESHOOTING
6.0
SEMIANNUAL MAINTENANCE INSPECTION CHECKLIST
7.0
PARTS
7.1
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
8.0
APPENDIX A: EMERGENCY WATER SOURCE MODULE
8.1
Model Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
8.2
Typical Application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
8.3
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
8.4
System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
8.5
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8.6
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
9.0
APPENDIX B: THE WATER LEVEL CONTROL MODULE
9.1
Model Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
9.2
Typical Application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
9.3
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
9.4
System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
9.5
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
9.6
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
ii
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
General piping arrangement—8- and 10-ton air cooled models . . . . . . . . . . . . . . . . . . . . . . . 9A
Cabinet and floor planning dimensional data—8- and 10-ton air cooled models . . . . . . . . . . 9B
Electrical field connections—8- and 10-ton air cooled models . . . . . . . . . . . . . . . . . . . . . . . . . 9C
Cabinet and floor planning dimensional data, 8- and 10-ton air cooled with thermal
storage tank cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9D
Hot Gas Bypass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Process chiller pump performance, 60 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18B
Piping bypass to evaporator inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18C
Electronic hot gas bypass valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18C
Hot gas bypass control board connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18D
Temperature sensor resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18E
The Emergency Water Source Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Emergency Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
General Piping Arrangement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Cabinet Dimensions and Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Emergency Switchover Electrical Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Water Level Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Water Level Control and Chiller System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
General Piping Arrangement at WLC Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Cabinet Dimensions and Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Electrical Connections at WLC Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Electrical and Piping Connections at the Process Chiller . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Level Control and Alarm Option Module Electrical Schematic. . . . . . . . . . . . . . . . . . . . . . . . 47
Tables
Table 1
Table 2
Table 3
Table 4
Table 5
Table 5A
Table 5B
Table 6
Table ?
Table 8
Table 9
Table 10
Table 11
Table 12
Table 13
Table 14
Table 15
Table 16
Table 17
Table 18
Table 19
Table 20
Model Number Designation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Typical Propylene Glycol Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Glycol Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Typical Ethylene Glycol Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Dimensional Data in.(mm). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Dimensional data, 8- and 10-ton air cooled. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9B
Dimensional Data, 8-10 ton air-cooled models with thermal storage tank cabinet . . . . . . . . 9D
Pump Suction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Chilled Fluid Pump Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Compressor Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Refrigeration System Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Condenser Fan Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Fans and Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Compressor and Refrigerant Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Quick Disconnect Couplings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Fluid Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Exterior Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Emergency Water Source Piping Connection Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Emergency Water Source Electrical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
WLC Module Connection Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
WLC Module Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
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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.(kg)
60 HZ
50 HZ
A
B
C
D
PF096A
PS095A
PS120A
PS119A
77
(1956)
39-1/4
(997)
38-1/2
(978)
5-1/2
(140)
750
(340)
Installation
9B
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
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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. Eight (8) gauges are
included:
•
•
•
•
•
•
•
•
Suction Pressure Refrigerant Circuit #1
Suction Pressure Refrigerant Circuit #2
Discharge Pressure Refrigerant Circuit #1
Discharge Pressure Refrigerant Circuit #2
Water Inlet Pressure
Water Outlet Pressure
Water Inlet Temperature
Water Outlet Temperature
Refrigerant Charge: 29.4 # per circuit R-22
Internal Glycol Volume (without 100 gallon storage tank):
12.4 gallons (8-ton, model PS096A)
12.6 gallons (10-ton, model PS120A)
Multistage Circulating Pump
The model number indication for the multistage pump is an “M” or “R” in the ninth character of
the model number. For example PS096A-AM40.
NOTE
The chiller includes a factory-installed and wired multistage circulating pump. It is
important that the pump be properly primed before operating.
1.
2.
3.
4.
5.
Fully unscrew the pin located in the drain plug.
Close the discharge valve.
Remove the vent plug and fully unscrew the drain plug pin.
Open the suction valve until liquid flows out of the vent plug connection.
Install and torque the vent plugs to 15 lbs-ft. Close the drain plug pin and open the discharge
valve.
For additional information, refer to the pump user manual that is shipped with the chiller and
attached to the pump with a cable tie. Figure 3A shows the flow and pressure characteristics.
Maintenance
18A
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 3B Piping bypass to evaporator inlet
External Equalizer
Evaporator
Distributor
TEV
SDR-4
Solenoid
Valve
TCB
See-All
Catch-Aall
Condenser
Compressor
Receiver
The system is factory-piped and wired. Figure 3C shows the connections to the control board.
Figure 3C Electronic hot gas bypass valve
SDR-4
8.21
Fitting size available - 3/8" or 1-1/8 ODF
8.08
Maintenance
18C
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. Jumpers are factory-set to the following pins:
P7—Temperature sensor enable selector
P9—“Close on rise” logic selector
P12—Valve selector
In addition a jumper can be field installed on the following pins to troubleshoot operation of the
valve:
P5—Force valve open: valve opens and remains open as long as jumper is installed
P6—Force valve closed: valve closes and remains closed as long as jumper is installed
18D
Maintenance
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. The
sensor changes electrical resistance in response to temperature changes. To check or troubleshoot
the sensor, disconnect it from the controller and measure the resistance. Figure 3E shows the
relationship between temperature and resistance.
Figure 3E Temperature sensor resistance
50,000
40,000
OHMS
30,000
20,000
10,000
-60
-40
-20
0
20
40
60
80
100
120
140
160
180
200
TEMPERATURE (Degrees Fahrenheit)
4A.4 Flow Control
A circuit setter is factory-installed in the supply line and a ball valve is factory-installed in a
bypass loop. The desired system flow to the load should be set by adjusting the circuit setter to the
required flow rate. If a flow rate of less than 5 gpm is required, the ball valve should be adjusted
to keep the overall system flow rate up. If low suction pressures are present, the circuit setter
should be set to a higher flow, with the bypass valve used to control flow to the load.
Maintenance
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HEAT REMOVAL /ENVIRONMENTAL CONTROL
Process Fluid Chiller
USER MANUAL
The Company Behind the Products
With over a million 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 to 60 tons
Power conditioning and UPS with power
ranges from 300 VA to more than 1000 kVA
Integrated systems that provide both
environmental and power protection in a
single, flexible package
Monitoring and control—from systems of any
size or location, on-site or remote
Service and support through more than 100
service centers around the world and a 24/7
Customer Response Center
While every precaution has been taken to ensure
the accuracy and completeness of this literature,
Liebert Corporation assumes no responsibility and
disclaims all liability for damages resulting from
use of this information or for any errors or
omissions.
© 2002 Liebert Corporation
All rights reserved throughout the world.
Specifications subject to change without notice.
® Liebert and the Liebert logo are registered
trademarks of Liebert Corporation. All names
referred to are trademarks or registered
trademarks of their respective owners.
SL-16530 (10/02)
Technical Support/Service
Web Site
www.liebert.com
Monitoring
800-222-5877
[email protected]
Outside the US: 614-841-6755
Single-Phase UPS
800-222-5877
[email protected]
Outside the US: 614-841-6755
Three-Phase UPS
800-543-2378
[email protected]
Environmental Systems
800-543-2778
Outside the United States
614-888-0246
Locations
United States
1050 Dearborn Drive
P.O. Box 29186
Columbus, OH 43229
Italy
Via Leonardo Da Vinci 8
Zona Industriale Tognana
35028 Piove Di Sacco (PD)
+39 049 9719 111
Fax: +39 049 5841 257
Asia
23F, Allied Kajima Bldg.
138 Gloucester Road
Wanchai
Hong Kong
+852 2 572 2201
Fax: +852 2 831 0114