Carrier 30GTN420 Manuals

Manuals and User Guides for Carrier 30GTN420. We have 1 Carrier 30GTN420 manual available for free PDF download: Operation And Service Manual

Carrier 30GTN420 Operation And Service Manual

Carrier 30GTN420 Operation And Service Manual (96 pages)

Air-Cooled Reciprocating Liquid Chillers with ComfortLink Controls 50/60 Hz

Brand: Carrier | Category: Chiller | Size: 2 MB

Table of Contents

Table of Contents
1
Safety Considerations
1
General
2
Introduction
2
Unit Sizes and Modular Combinations
3
Major System Components
3
General
3
Main Base Board (MBB)
3
Expansion Valve (EXV) Board
3
Compressor Expansion Board (CXB)
3
Scrolling Marquee Display
3
Energy Management Module (EMM)
3
Enable/Off/Remote Contact Switch
3
Emergency On/Off Switch
3
Thermistor Designations
4
Control Module Communication
4
Carrier Comfort Network Interface
4
- Status Switches
  5
- Output Relay
  5
- Typical Control Box
  6
Operating Data
11
Sensors
11
Thermostatic Expansion Valves (TXV)
15
Compressor Protection Control System
15
- (CPCS) or Control Relay (CR)
  15
Compressor Ground Current Protection Board (CGF) and Control Relay (CR)
15
Electronic Expansion Valve (EXV)
16
Energy Management Module
16
Capacity Control
16
- Minutes off Time
  26
- Lead/Lag Determination
  26
- Capacity Sequence Determination
  26
- Capacity Control Overrides
  26
Head Pressure Control
27
- Units with Txv
  27
Pumpout
27
- Exv Units
  27
- Txv Units
  27
Marquee Display Usage
29
Service Test
29
Configuring and Operating Dual Chiller
29
- Control
  29
- Loading Sequence
  37
Temperature Reset
43
Cooling Set Point (4 to 20 Ma)
45
4 To 20 Ma Controlled
46
Demand Limit
46
Troubleshooting
47
Compressor Protection Control System
47
- (CPCS) Board
  47
Compressor Ground Current (CGF) Board
47
- And 330A/B-420A/B)
  47
EXV Troubleshooting
47
Alarms and Alerts
48
- Alarm and Alert Codes
  49
- Electric Shock Hazard
  53
Service
53
Electronic Components
53
Compressors
53
- Oil Charge
  53
Cooler
53
- Cooler Removal
  53
- Servicing the Cooler
  54
- Replacing Cooler
  54
Condenser Coils
56
Condenser Fans
57
Refrigerant Feed Components
58
- Electronic Expansion Valve (Exv)
  58
- Filter Drier
  58
- Location
  59
Thermistors
59
Safety Devices
64
- Compressor Protection
  64
- Low Oil Pressure Protection
  64
- Cooler Protection
  64
Relief Devices
65
- High-Side Protection
  65
- Pressure Relief Valves
  65
Other Safeties
65
Pre-Start-Up
65
System Check
65
- Minimum Fluid Loop Volume
  66
- Temperatures
  66
Start-Up and Operation
66
Actual Start-Up
66
Operating Limitations
66
- Voltage
  66
- Flow Rate Requirements
  67
Operation Sequence
67
Refrigerant Circuit
67
Field Wiring
67
Control Wiring
68
APPENDIX A - CCN TABLES UNIT (Configuration Settings)
71
- Appendix A — Ccn Tables
  79
- Appendix B - Fluid Drop Pressure Curves
  80
  - Appendix B - Fluid Pressure Drop
    80
  - Service Training
    88
  - All Units
    96

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