Dunham-Bush WCFX 10, Инструкция по установке, эксплуатации и обслуживанию

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ABLE OF CONTENTS
DESCRIPTION PAGE NO DESCRIPTION PAGE NO
1.0 GENERAL INFORMATION
1.1 RECEIVING AND INSPECTION
.............................................. 4
1.2 RIGGING AND MOVING
.......................................................... 4
1.3 DIMENSIONAL DATA
. .............................................................. 4
1.4 APPLICATION PRECAUTIONS
. ............................................. 4
1.4.1 Water Connections .............................................................. 4
1.4.2 Chilled Water Flow............................................................. 4
1.4.3 Water Cooled Condenser .................................................... 5
1.4.4 Water
Treatment.................................................................. 5
2.0 INSTALLATION
2.1 FOUNDATION
........................................................................... 10
2.2 VIBRATION ISOLATION
........................................................ 10
2.3 UNMOUNTED ACCESSORIES
............................................... 10
2.4 WATER PIPING CONNECTIONS
.......................................... 10
2.5 ELECTRICAL WIRING
........................................................... 10
2.6 CONTROLS
................................................................................ 28
2.6.1 Connections....................................................................... 28
2.6.2 Settings.............................................................................. 28
2.7 REQUEST FOR START-UP REPRESENTATIVE
............... 28
3.0 OPERATION
3.1 SYSTEM WATER FLOW RATE
............................................. 29
3.2 SEASONAL SHUT-DOWN PROCEDURE
............................ 29
3.3 SEASONAL START-UP PROCEDURE
.................................. 29
3.4 SAFETY RELIEF VALVES
...................................................... 29
3.5 REFRIGERATION CYCLE
..................................................... 29
3.6 OIL MANAGEMENT SYSTEMS
............................................ 30
3.7 HYDRAULIC CAPACITY CONTROL SYSTEM
................. 30
3.8 FREEZE PROTECTION
........................................................... 34
3.8.1 Standby At Low Ambient Temperatures .................... 34
3.8.2 In
Operation................................................................. 34
3.8.3 During Maintenance .................................................... 34
4.0 ELECTRICAL
4.1 ELECTRICAL DATA
................................................................ 35
4.2 WIRING DIAGRAM
.................................................................. 35
4.3 TYPICAL OPERATION
........................................................... 35
4.4 Vision 2020i Controller and Terminal
...................................... 45
4.4.1 Operator Keypad............................................................. 45
4.4.1.1 The fifteen polycarbonate buttons ................... 45
4.4.2 Status Reading ................................................................ 46
4.4.2.1 Input status key ................................................ 46
4.4.2.2 Output status key.............................................. 46
4.4.2.3 Compressor status key ..................................... 46
4.4.2.4 Setpoint
key...................................................... 46
4.4.2.5 Clock key.......................................................... 47
4.4.2.6 Alarm history key............................................. 47
4.4.3 Authorization .................................................................. 48
4.4.3.1 Authorization key............................................. 48
4.4.4 Advanced user key and menu......................................... 48
4.4.4.1 User key............................................................ 48
4.4.5 Technician Key and Menu ........................................... 48
4.4.5.1
Technician status key .................................. 48
4.4.5.2 Technician status key- main menu.............. 48
4.4.5.3 Compressor FLA calibration....................... 49
4.4.5.4 To perform sensor calibration ..................... 49
4.4.5.5 Manual control ............................................ 49
4.4.5.6 Compressor control ..................................... 50
4.4.6 Control Functions......................................................... 51
4.4.6.1 Chilled water pump interlock and flow
switch .......................................................... 51
4.4.6.2 Customer control interlock.......................... 51
4.4.6.3 Anti-recycle timer ....................................... 51
4.4.6.4 On Delay Timer........................................... 51
4.4.6.5 Load control ................................................ 51
4.4.6.6 Ramp control ............................................... 51
4.4.6.7 Staging control ............................................ 52
4.4.6.8 Modmotor setback control .......................... 52
4.4.6.9 Evaporator pressure control ........................ 52
4.4.6.10 Sump Heater Control................................... 52
4.4.6.11 Low pressure cut-off ................................... 53
4.4.6.12 Evaporator Freeze Shutoff .......................... 53
4.4.6.13 High pressure cut-off................................... 53
4.4.6.14 Optical oil level sensor................................ 53
4.4.6.15 High oil temperature thermostat ................. 53
4.4.6.16 Overload
protector....................................... 53
4.4.6.17 Phase control relay ...................................... 53
4.4.6.18 Sensor
alarm................................................ 54
4.4.6.19 No-stop alarm.............................................. 54
4.4.6.20 Low differential pressure alarm .................. 54
4.5 Calibration Of Screw Compressor Capacity Amps At Full
Load & Minimum Load Percentage
......................................... 54
4.6 Master/ Slave Control Sequence
................................................ 54
4.6.1 Sensor Principle of Operation VIA DBLAN
Communication Bus..................................................... 55
4.6.2 Sequence of Operation ................................................. 56
4.7 Vision 2020i Local Area Network (DBLAN)
............................ 56
4.8 Network Connection Diagram
................................................... 57
4.9 Hardware Setting
........................................................................ 57
4.9.1 Addressing the Vision 2020i Controller ...................... 57
4.9.2 Addressing the Vision 2020i Terminal ........................ 58
4.9.3 Vision 2020i Controller LED Status............................ 59
5.0 MAINTENANCE
5.1 GENERAL
................................................................................... 60
5.2 PERIODIC INSPECTION.
........................................................ 60
5.3 MONTHLY INSPECTION.
....................................................... 60
5.4 WATER SIDE CLEANING OF VESSELS
............................. 60
5.5 ELECTRICAL MALFUNCTION
............................................ 61
5.6 CHARGING.
............................................................................... 61
5.6.1 Refrigerant Charge............................................................ 61
5.6.2 Oil Charge ......................................................................... 61
5.7 TROUBLESHOOTING
............................................................. 63
5.8 SAMPLE LOG SHEET
.............................................................. 64
SCHEMATIC DIAGRAM, GRAPH AND TABLE
Figure 1.2 Rigging Diagram ...................................................... 5
Figure 1.3 Dimensional Data..................................................... 7
Table 2.1 Floor Loading Diagram........................................... 11
Figure 2.4 Pressure Drop ........................................................... 12
Figure 3.5 Piping Schematic...................................................... 31
Figure 3.7 Continuous Capacity Control System ..................... 34
Figure 4.2 Typical Wiring Schematic........................................ 36
Figure 4.3.1 Vision 2020i Keypad................................................. 48
Table 4.4.6.6 Ramp Rates For Several Setpoints (In Minutes).... 51
Table 4.9.3 LED Status ............................................................... 59
Table 5.4 R134a Pressure/Temperature Properties................ 62
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