Carrier 30GT080-420 - User Manual

Installation, Start-Up and
Service Instructions
SAFETY CONSIDERATIONS
Installing, starting up, and servicing this equipment can
be hazardous due to system pressures, electrical compo-
nents, and equipment location.
Only trained, qualified installers and service mechanics
should install, start up, and service this equipment.
Untrained personnel can perform basic maintenance func-
tions, such as cleaning coils. All other operations should be
performed by trained service personnel.
When working on the equipment, observe precautions in
the literature, and on tags, stickers, and labels attached to the
equipment.
• Follow all safety codes.
• Wear safety glasses and work gloves.
• Use care in handling, rigging, and setting bulky
equipment.
ELECTRIC SHOCK HAZARD.
Open all remote disconnects before serv-
icing this equipment.
IMPORTANT: This equipment generates, uses, and can
radiate radio frequency energy and if not installed
and used in accordance with these instructions may cause
radio interference. It has been tested and found to
comply with the limits of a Class A computing de-
vice as defined by FCC (Federal Communications
Commission, U.S.A.) regulations, Subpart J of Part 15,
which are designed to provide reasonable protection
against such interference when operated in a commer-
cial environment.
CONTENTS
Page
SAFETY CONSIDERATIONS ................. 1
INTRODUCTION ............................ 2
INSTALLATION .............................2-43
Step 1 — Rig and Place the Unit ............. 2
Step 2 — Join Modules A and B
(230-420 Units Only) ..................... 27
Step 3 — Check Compressor Mounting .... 27
Step 4 — Cooler Fluid and Drain
Piping Connections ....................... 27
• PREPARATION FOR YEAR-ROUND
OPERATION
• PREPARATION FOR WINTER SHUTDOWN
Step 5 — Make Electrical Connections ..... 28
• FIELD POWER CONNECTIONS
• FIELD CONTROL POWER CONNECTIONS
Page
Step 6 — Install Accessories .............. 43
• ELECTRICAL
• LOW-AMBIENT OPERATION
• HOT GAS BYPASS
• MISCELLANEOUS ACCESSORIES
PRE-START-UP ............................43-50
System Check ............................ 43
Quick Test ................................ 44
• A. QUICK TEST STEPS 1-15:
UNIT CONFIGURATION
• B. QUICK TEST STEPS 16-30: THERMISTORS
AND SET POINT POTENTIOMETERS
• C. QUICK TEST STEPS 31-42: OUTPUT RELAYS
START-UP AND OPERATION ...............50-56
Digital Display Action ..................... 50
Actual Start-Up ........................... 50
Operating Limitations ..................... 50
• TEMPERATURES
• VOLTAGE
• MINIMUM FLUID LOOP VOLUME
• FLOW RATE REQUIREMENTS
Operation Sequence ...................... 51
• UNITS WITH ELECTRONIC EXPANSION
VALVE (EXV)
• 30GT080-110 UNITS WITH OPTIONAL
THERMOSTATIC EXPANSION VALVE
(TXV)
• LOAD SHED
• TEMPERATURE RESET
• HEAD PRESSURE CONTROL
• REMOTE ON-OFF
• REMOTE ALARM
SERVICE ..................................57-68
Diagnostics and Troubleshooting ........... 57
Refrigerant Circuit ......................... 57
• LEAK TESTING
• DEHYDRATION
• REFRIGERANT CHARGE
Electronic Components .................... 57
• CONTROL COMPONENTS
• 30GT080-110 AND 230B-315B
UNIT CONTROL BOX
• 30GT130-210, 230A-315A, AND
330A/B-420A/B UNIT CONTROL AND
MAIN POWER BOXES
Compressors .............................. 57
• COMPRESSOR REMOVAL
• OIL CHARGE
Cooler ..................................... 58
• COOLER REMOVAL
• REPLACING COOLER
• SERVICING COOLER
30GT080-420
Flotronic™ Reciprocating Liquid Chillers
50/60 Hz
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 2
Tab 5c
PC 903 Catalog No. 533-005 Printed in U.S.A. Form 30GT-50SI Pg 1 12-96 Replaces: 30GT-45SI

Summary

Installation, Start-Up and Service Instructions

SAFETY CONSIDERATIONS

General safety warnings and precautions for installation, operation, and servicing.

INTRODUCTION

Overview of the 30GT080-420 Flotronic™ liquid chillers and their features.

INSTALLATION

Detailed steps and guidelines for unit installation and placement.

Rigging and Placement

Instructions for rigging, lifting, and correctly positioning the chiller unit.

Module Joining and Connections

Procedures for joining modular sections and connecting cooler piping.

Electrical Connections

Instructions for making field power and control wiring connections.

PRE-START-UP AND OPERATION

Checks, procedures, and operational guidelines for starting and running the chiller.

System Check and Quick Test

Pre-start-up checks including system verification and a 42-step quick test program.

Start-Up Procedures

Step-by-step guide for initial unit start-up, including display codes and operation sequence.

Operating Limitations

Key temperature and voltage limits for proper chiller operation.

SERVICE AND TROUBLESHOOTING

Maintenance, troubleshooting, and repair procedures for the chiller.

Diagnostics and Troubleshooting

Comprehensive guide for identifying and resolving chiller issues.

Refrigerant Circuit Service

Troubleshooting procedures for leaks, dehydration, and refrigerant charging.

Compressor and Cooler Service

Procedures for compressor removal, cooler service, and replacement.

Refrigerant Feed Components

Details on EXV, TXV, thermistors, and other refrigerant circuit components.

Safety Devices Overview

Description of various safety devices and protection logic for safe operation.

Carrier 30GT080-420 Specifications

General

Brand	Carrier
Model	30GT080-420
Category	Chiller
Language	English