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Carrier 170GTN Manuals
Manuals and User Guides for Carrier 170GTN. We have
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Carrier 170GTN manual available for free PDF download: Service And Troubleshooting Manual
Carrier 170GTN Service And Troubleshooting Manual (84 pages)
Air-Cooled Reciprocating with ComfortLink Controls 50/60 Hz Controls, Start-Up, Operation, Service, and Troubleshooting
Brand:
Carrier
| Category:
Chiller
| Size: 1.47 MB
Table of Contents
Table of Contents
1
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
Typical Control Box Overview
6
Enable/Off/Remote Contact Switch
10
Emergency On/Off Switch
10
Cooler Thermistor Locations
11
Operating Data
11
Sensors
14
T10 - Remote Space Temperature Sensor
14
Thermostatic Expansion Valves (TXV)
15
Compressor Protection Control System (CPCS) or Control Relay (CR)
15
Compressor Current Protection Board
15
(CGF) and Control Relay (CR)
15
Electronic Expansion Valve (EXV)
16
Energy Management Module
16
Capacity Control
16
Minutes Left for Start
26
Minutes off Time
26
Loading Sequence
26
Lead/Lag Determination
26
Capacity Sequence Determination
26
Capacity Control Overrides
26
Head Pressure Control
27
COMFORTLINK™ UNITS (with EXV)
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
Temperature Reset
43
Demand Limit
45
DEMAND LIMIT (2-Stage Switch Controlled)
45
Externally Powered Demand Limit
45
DEMAND LIMIT (CCN Loadshed Controlled)
45
Troubleshooting
46
Compressor Protection Control System
46
(CPCS) Board
46
Compressor Ground Current (CGC) Board
46
B-420A/B)
46
EXV Troubleshooting
46
Step 1 − Check Processor Exv Outputs
46
Step 2 - Check Exv Wiring
46
Step 3 - Check Resistance of Exv Motor Windings
46
Step 4 - Check Thermistors that Control Exv
46
Step 5 - Check Operation of the Exv
47
Alarms and Alerts
47
Alarm and Alert Codes
48
Service
52
Electronic Components
52
Compressors
52
Compressor Removal
52
Oil Charge
52
Cooler
52
Cooler Removal
52
Replacing Cooler
53
Servicing the Cooler
53
Condenser Coils
55
Condenser Fans
55
Refrigerant Feed Components
56
Electronic Expansion Valve (Exv)
56
Moisture-Liquid Indicator
57
Filter Drier
57
Liquid Line Solenoid Valve
57
Liquid Line Service Valve
57
Thermistors
57
Location
57
Replacing Thermistor T2
57
Replacing Thermistors T1,T5,T6,T7, and T8
58
Thermistors T3 and T4
58
Thermistor/Temperature Sensor Check
58
Safety Devices
63
Compressor Protection
63
Low Oil Pressure Protection
63
Crankcase Heaters
63
Cooler Protection
63
Relief Devices
64
High-Side Protection
64
Low-Side Protection
64
Pressure Relief Valves
64
Other Safeties
64
Pre-Start-Up
64
System Check
64
Start-Up and Operation
65
Actual Start-Up
65
Operating Limitations
65
Temperatures
65
Voltage
65
Minimum Fluid Loop Volume
65
Flow Rate Requirements
65
Operation Sequence
66
Appendix A - Ccn Tables
67
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