Carrier 19DK Manual

Contents
List of Tables
List of Figures
Introduction
Abbreviations
Definitions
Controls
General
Processor Board
Input/Output Board
Set Point/Display Board
Safety Controls
Reset Pushbutton
Deadband
Proportional Band

Contents
Ramp Loading
Capacity Overrides
Excessive Purge Pump Run Time
Oil Heater and Thermostat
Remote Start/Stop Controls
Spare Safety Inputs
Start-Up Sequence
Shutdown Sequence
Control Configuration
Controls Test
Before Initial Start-Up
Job Data Required
Equipment Required
Check Machine Tightness

Contents
Inspect Piping
Charge Refrigerant
Inspect Wiring
Check Starter
Oil Charge
Check Oil Heater
Check Machine Safety Control Settings
Configure DIP Switches
Check Safety Control Operation
Initial Start-Up
Preparation
Start-Up
Calibrate Motor Current Demand
Check Machine Operating Condition
Trim Refrigerant Charge

Contents
Instruct the Customer Operator
Compressor-Motor Assembly
Unishell
Purge System
Lubrication System
Control System
Auxiliary Equipment
Describe Machine Cycles
Review Maintenance
Safety Devices and Procedures
Check Operator Knowledge
Review Operating and Maintenance Instructions
Operating Instructions
Operator Duties
Prepare Machine for Start-Up

Contents
To Start Machine
Check Running System
To Stop Machine
After Limited Shutdown
Extended Shutdown
After Extended Shutdown
Manual Operation
Refrigeration Log
Weekly Maintenance
Check Lubrication System
Check Purge Operation
Scheduled Maintenance
Inspect Control Center
Check Safety and Operating Controls

Contents
Change Oil and Oil Filter
Change Volute Drain Strainer and Refrigerant Filter
Compressor Bearing Maintenance
Inspect Purge
Inspect Refrigerant Flow Chamber
Inspect Unishell Tubes
Inspect Starting Equipment
Ordering Replacement Parts
General Maintenance
Refrigerant Properties
Charging Refrigerant
Removing Refrigerant
Trimming Refrigerant Charge
Refrigerant Loss

Contents
Air and Water Leaks
Pressurizing a Machine When Liquid Refrigerant is Present
Pressurizing a Machine When Liquid Refrigerant is Not Present
Guide Vane Linkage
Sensor Test Procedure
General Data
Machine Informative Plate
System Components
Refrigeration Cycle
Motor Cooling Cycle
Lubrication Cycle
Summary
Details
Purge Cycle
Purge Operation

Contents
Compressor Fits and Clearances
Control Troubleshooting
Test Points
Processor Board Replacement
Input/Output Board Replacement
Set Point/Display Board Replacement

Contents
List of Tables
Table 1 —Safety Limits and Control Settings
Table 2 —Capacity Override Set Points
Table 3 —Configuration (DIP) Switch Settings
Table 4 —Controls Test
Table 5 —Machine Charge
Table 6 —Oil Charge
Table 7a —Sensor Resistance and Temperature (F)
Table 7b —Sensor Resistance and Temperature (C)
Table 8 —Purge Operating Switch Settings
Table 9 —Diagnostic Codes and Troubleshooting Guide

Contents
List of Figures
Figure 1 —19DK Machine Components
Figure 2 —Control Center
Figure 3 —Control Wiring Schematic
Figure 4 —Control Sequence
Figure 5 —19DK Leak Test Sequence and Procedures
Figure 6 —Purge Valve and Switch Settings
Figure 7 —Purge Component Location
Figure 8 —Flow Chamber Poppet Valve Detail
Figure 9 —Guide Vane Linkage (Closed Position)
Figure 10 —Refrigeration and Motor Cooling Cycles
Figure 11 —Lubrication Cycle
Figure 12 —Purge Cycle
Figure 13 —Compressor Fits and Clearances