Dunham-Bush ACXi 165-5SP-LN, Инструкция по установке, эксплуатации и обслуживанию

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TABLE OF CONTENTS
DESCRIPTION PAGE NO DESCRIPTION PAGE NO
1.0 INTRODUCTION
1.1 Product Identification
.......................................3
2.0 INSTALLATION
2.1 General
............................................................. 5
2.1.1 Application Precautions............................... 5
2.1.2 Chilled Water Flow..................................... 5
2.2 Inspection
. ........................................................
5
2.3 Rigging
..............................................................
5
2.3.1 General...................................................... 5
2.3.2 Rigging & Moving...................................... 5
2.4 Space Requirements and Clearance
..............
7
2.4.1 General...................................................... 7
2.4.2 ACXi......................................................... 7
2.5 Foundation
.....................................................
10
2.6 Vibration Isolation
........................................ 10
2.7 Piping connections
.........................................
10
2.8 Electrical Wiring
. ..........................................
10
2.9 Controls
.......................................................... 12
2.9.1 Connections ............................................. 12
2.9.2 Settings.................................................... 12
2.10 Request For Start-Up Representative
.........
12
3.0 OPERATION
3.1 General
...........................................................
13
3.2 Unit piping
......................................................
13
3.3 System Water Flow Rate
...............................
13
3.4 Standard Ambient Unit Operation (65°F
Minimum Ambient) Including Overnight
Shut Down and Morning Restart
13
3.4.1 Air Cooled Package Chiller Start-Up .......... 13
3.5 System Start Up
..............................................
13
3.6 Shut-Down (Overnight Or Weekend)
..........
16
3.7 Seasonal Shut-Down Procedure
................... 16
3.8 Seasonal Start-up Procedure
........................
16
3.9 Safety Relief Valves
.......................................
17
3.10 Refrigeration Cycle- Multiple
Compressor ACXi
.......................................... 17
3.11 Fan Cycling
....................................................
17
3.12 Liquid Injection
.............................................
17
3.13 Hydraulic Capacity Control System
............ 17
4.0 ELECTRICAL
4.1 Electrical Data
............................................... 19
4.2 Wiring Diagram
.............................................
19
4.3 Typical Operation
..........................................
19
4.4 Microcomputer Controller
...........................3 2
4.4.1 To Display Data from the Menu................. 32
4.4.2 To Reset All Control Points To
Computer Control..................................... 32
4.4.3 To Display Alarms....................................32
4.4.4 To Become Authorized..............................32
4.4.5 To Alter Setpoint Data...............................32
4.4.6 To Calibrate Temperature and
Pressure Sensors.......................................33
4.4.7 To Set Data and Time ................................33
4.4.8 To Display Data without Accessing Menu...33
4.4.9 Unit Schedule of Operation........................33
4.5 Control Functions
.......................................... 34
4.5.1 Chilled Water Pump Interlock And
Flow Switch (CWP And CWFS) .................34
4.5.2 Customer Interlock....................................35
4.5.3 Anti-Recycle Timer (Microcomputer) .........35
4.5.4 Load Control (Microcomputer) ...................35
4.5.5 Ramp Control (Microcomputer)..................35
4.5.6 Current Limiting (Microcomputer)..............36
4.5.7 Staging Control (Microcomputer) ...............36
4.5.8 Manual lead-Lag Control (Microcomputer)..36
4.5.9 Manual Load-Unload Control
(Microcomputer) .......................................36
4.5.10 Chilled Water Reset and Customer
Control Interlock (Optional).......................37
4.5.11 Variable Fan Speed Control (Optional)........37
4.5.12 Sump Heater Control.................................37
4.6 Safety Functions
.............................................
37
4.6.1 Control Power Loss (Microcomputer) .........37
4.6.2 Low Pressure Cut-Off (Microcomputer) ......37
4.6.3 Evaporator Freeze Shutoff (Microcomputer) 37
4.6.4 High Pressure Cut-Off (Microcomputer)......37
4.6.5 Oil Level Switch (FS) ................................38
4.6.6 Overload Protector (OL) ............................38
4.6.7 Phase Control Relay (PCR) ........................38
4.6.8 Sensor Alarm (Microcomputer) ..................38
4.6.9 No-Stop Alarm (Microcomputer) ................38
4.6.10 Low Differential Pressure Alarm
(Microcomputer) .......................................38
5.0 5.0 MAINTENANCE
5.1 General
............................................................
39
5.2 Periodic Inspection
........................................ 39
5.3 Monthly Inspection
........................................
39
5.4 Vessel Maintenance
.......................................
39
5.4.1 general.....................................................39
5.4.2 Water Side Cleaning of Evaporator.............39
5.5 Air Cooled Condenser Cleaning
...................
39
5.6 Electrical Malfunction
................................... 41
5.7 Refrigerant Charge
........................................
41
5.7.1 General ....................................................41
5.7.2 Air Cooled Packages .................................41
5.8 Oil Charge
......................................................
41
5.9 Troubleshooting
.............................................
42
5.10 Sample Log Sheet
........................................... 43
SCHEMATIC DIAGRAM, GRAPH AND TABLE
DESCRIPTION PAGE NO
Figure 2.3.2 ACXi 165-5SP-LN Typical Rigging..................... 6
Figure 2.4.1 ACXi 165-5SP-LN Space Requirements............... 7
Figure 2.4.2 ACXi 165-5SP-LN Dimensional Data................... 9
Figure 2.5A ACXi 165-5SP-LN Isolator Location.................. 11
Figure 2.5B ACXi 165-5SP-LN Isolator Point Load Data....... 11
Figure 3.2
ACXi 165-5SP-LN Typical Piping Schematic...... 14
Figure 3.3 Evaporator Water Pressure Drop ........................ 15
Figure 3.13 Compressor Capacity Control Detail................... 18
Figure 4.2 ACXi 165-5SP-LN Typical Wiring Schematic..... 20
DESCRIPTION PAGE NO
Table 1.1 Physical Specifications........................................4
Table 4.5.5 Sample Ramp Times (Minutes) For Two
Compressor Unit ...............................................36
Table 5.4.2 R407c Pressure/Temperature Properties...............40
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