ContentsList 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

ContentsRamp 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

ContentsInspect 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

ContentsInstruct 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

ContentsTo 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

ContentsChange 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

ContentsAir 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

ContentsCompressor Fits and Clearances

Control Troubleshooting

Test Points

Processor Board Replacement

Input/Output Board Replacement

Set Point/Display Board Replacement

ContentsList 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

ContentsList 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