Carrier 30HL User Manual

Carrier Parkway • Syracuse NY 13221
Reciprocating Liquid Chillers (60 Hz)
All 208/230-volt units have extended-voltage
compressor motors.
All units have suction-cutoff unloading
system.
CONTENTS
Page
SAFETY CONSIDERATIONS. I
INSTALLATION.1-6
Step 1 — Inspect Shipment. 1
Step 2 — Rig and Place Unit. I
• RIGGING
• PLACEMENT
Step 3 — Check Compressor Mounting
and Connections. 3
• SERVICE ACCESS
Step 4 — Make Piping Connections. 3
• CONDENSER DESCRIPTION
• CONDENSER PIPING
• COOLER DESCRIPTION
• COOLER PIPING
Step 5 — Make Electrical Connections . 4
• ELECTRICAL BOX, CONTROL SECTION
• UNBALANCED 3-PHASE SUPPLY
VOLTAGE
• ELECTRICAL BOX, POWER SECTION
START-UP AND SERVICE. 6
Initial Check. 6
Check Refrigerant Charge. 6
• LIQUID CHARGING METHOD
Check Oil Charge. 7
• TO ADD OIL
• TO REMOVE OIL
START-UP.7-10
Check Refrigerant Feed Components. 7
• THERMOSTATIC EXPANSION VALVE
• FILTER DRIER
• MOISTURE-LIQUID INDICATOR
• LIQUID-LINE SERVICE VALVE
• LIQUID-LINE SOLENOID VALVE
• PRESSURE RELIEF DEVICES
• CHECK VALVE
Check Compressor Protection Devices. 8
• CIRCUIT BREAKER
• MOTOR OVERTEMPERATURE
THERMOSTAT
• CRANKCASE HEATER
• TIME GUARD® CONTROL
• FOUR-FUNCTION TIMER
• OIL PRESSURE SAFETY
SWITCH (OPS)
Check Unit Safety Devices.9
• SAFETY THERMOSTAT
• HIGH-PRESSURE SWITCH
• LOW-PRESSURE SWITCH
Check Capacity Control System. 10
• DESCRIPTION
• 3-STEP TEMPERATURE
CONTROLLER
DESIGN SET POINT ADJUSTMENT
CYLINDER UNLOADING SYSTEM
Page
UNIT OPERATION.10-11
Control Power. 10
Control Sequence. 11
Unit Stoppage and Restart. 11
SERVICING COOLER.11-13
Tube Plugging. 12
Retubing . 12
Tightening Cooler Head Bolts . 12
• GASKET PREPARATION
• BOLT TORQUES
• BOLT TIGHTENING SEQUENCE
TROUBLESHOOTING GUIDE.14,15
SAFETY CONSIDERATIONS
Installation, start-up and servicing of this
equipment can be hazardous due to system pres¬
sures, electrical components and equipment
location (roofs, elevated structures, etc.).
Only trained, qualified installers and service
mechanics should install, start-up and service
this equipment.
When working on the equipment, observe pre¬
cautions in the literature, tags, stickers and labels
attached to the equipment and any other safety
precautions that apply.
• Follow all safety codes.
• Wear safety glasses and work gloves.
• Use care in handling, rigging and setting bulky
equipment.
INSTALLATION
Step 1 — Inspect Shipment
Inspect unit for damage or missing parts. If dam¬
age is detected, or if shipment is incomplete, file a
claim immediately with the shipping company.
Step 2 — Rig and Place Unit
RIGGING
On each end of cooler, a steel loop is provided for
the preferred method of lifting unit. Use spreader
bars to keep cables away from compressor enclo^
sure and control box. If unit is to be moved by fork
truck, use the following methods:
1. From front or rear, lift under the cooler rails.
Unit can be either on or off skid.
2. When moving from ends, leave unit on skid. Lift
from under skid.
© Carrier Corporation 1983
Form 30HK,HL-10SI

Carrier 30HL Specifications

General

Brand	Carrier
Model	30HL
Category	Chiller
Language	English

Summary

Installation Process Overview

Step 1: Inspect Shipment

Check unit for damage or missing parts upon arrival and file claims if necessary.

Step 2: Rig and Place Unit

Procedures for lifting and positioning the unit using loops, spreader bars, or fork trucks.

Step 3: Check Compressor Mounting & Connections

Verify compressor mounting and connections, including removal of shipping bolts.

Step 4: Make Piping Connections

Step 5: Make Electrical Connections

Start-Up and Initial Checks

Initial System Checks

Essential pre-operation checks including auxiliary components and safety devices.

Refrigerant & Oil Charge Verification

Steps to check and adjust refrigerant and compressor oil levels.

Refrigerant and Oil Handling Procedures

Liquid Charging Method

Adding & Removing Compressor Oil

Refrigerant System Components

Compressor Protection Devices

Compressor Control & Safety Features

Time Guard Control

Oil Pressure Safety Switch (OPS)

Unit Safety Device Checks

Capacity Control System Operation

Capacity Adjustment and Operation Sequence

Cylinder Unloading System

Unit Operation and Stoppage

Control Power & Initial Start-up

Information on control power sources and the standard start-up sequence.

Unit Stoppage & Restart Procedures

Common reasons for unit shutdown and how to restart it safely.

Cooler Servicing and Repair

Tube Plugging Procedure

Cooler Retubing Process

Cooler Head Bolt Tightening

Troubleshooting Common Issues

Compressor Start-Up & Operation Problems

Diagnosing and resolving issues when the compressor fails to run or cycles.

Oil Loss & Suction Line Freezing

Identifying causes and remedies for oil loss and frosted suction lines.

High Pressure & Continuous Operation

Addressing issues related to high-pressure trips and continuous unit operation.

Advanced Troubleshooting Scenarios

System Noises & Freeze-up

Diagnosing system noises, vibration, and freeze-up conditions.

Capacity Control & Loading Issues

Troubleshooting compressor unloading and loading problems.