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Carrier Aquasnap 30RB 080R User Manual

Carrier Aquasnap 30RB 080R
56 pages
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INSTALLATION, OPERATION AND
MAINTENANCE INSTRUCTIONS
Translation of the original document
* The availability of sizes and options depends on the country. Please contact your local commercial dealer for more information.
Air-Cooled Liquid Chillers
Reversible heat pumps
30RB/30RQ 040R-160R
Rated cooling capacity 40-160 kW
R-32

Table of Contents

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Carrier Aquasnap 30RB 080R Specifications

General IconGeneral
RefrigerantR-410A
Power Supply400V/3Ph/50Hz
Compressor TypeScroll
Number of compressors2
Cooling Capacity80 kW

Summary

Introduction and Safety Instructions

Handling and Positioning

3.1 Handling

Guidelines for safely moving the unit using forklifts or slings, emphasizing proper lifting points and avoiding damage.

3.2 Positioning

Instructions for outdoor installation, ensuring level surface, adequate clearances, and protection from environmental factors.

Dimensions, Clearances, Minimum Installation Distances

4.6 ATEX Zones Positioning

Information on ATEX zones around units due to refrigerant type, requiring trained personnel and specific equipment for entry.

Physical and Electrical Data

5.1 Physical Properties

Table detailing physical properties like sound levels, dimensions, operating weight, compressor types, and refrigerant data for various unit models.

5.2 Electrical Data Notes

Notes on electrical data including voltage, power input, current draw, and start-up current for specific unit models.

5.3 Short-Circuit Withstand Capability

Details on the short-circuit withstand current (Icw, Ipk) and associated protection for the TN system.

5.5 Compressor Electrical Data Notes

Notes on compressor electrical data, including nominal current, maximum current, and locked rotor current, with specific conditions noted.

Electrical Connection

6.1 Power Supply

Requirements for power supply, voltage range, and warnings regarding incorrect voltage or phase imbalance for unit operation.

Application Data

7.1 Operating Range

Defines operating ranges for water and air temperatures for various unit configurations, including notes on antifreeze and part-load operation.

Water Connections

8.2 Water Connections

Schematic diagrams of hydraulic circuits with and without hydraulic modules, detailing components and installation requirements.

8.5 Units with Hydraulic Module and Variable-Speed Pump - Pressure Differential Control

Explains variable speed pump control based on pressure differential, adjusting pump speed to maintain setpoint and observing flow rate limits.

8.6 Units with Hydraulic Module and Variable-Speed Pump - Temperature Difference Control

Details variable speed pump control based on temperature difference, adjusting pump speed to maintain setpoint.

Nominal System Water Flow Rate Control

9.1 Available Static Pressure for the Installation

Graphs showing available static pressure for high pressure pumps (single) versus water flow rate for different unit sizes.

System Start-Up

10.1 Checks Before System Start-Up

Comprehensive checklist for pre-startup verification of the system, including installation drawings, safety devices, and refrigerant circuit checks.

10.2 Commissioning

Guidance on unit commissioning, emphasizing supervision by qualified engineers and adherence to operating instructions.

10.3 Compressor Checks

Checks for correct compressor rotation direction, discharge temperature, pressure, and input current.

10.4 Hydraulic Checks

Procedures for adjusting water flow rate and ensuring the hydraulic circuit is free from pollution before start-up.

10.5 Refrigerant Charge Checks

Checks for visible refrigerant or oil leaks, and ensuring the refrigerant circuit pipes are undamaged.

Main Components and Operating Characteristics

Standard Maintenance

13.1 Level 1 Maintenance

Simple maintenance tasks for users, including visual inspections, cleaning air-cooled exchangers, and checking refrigerant charge.

13.2 Level 2 Maintenance

Maintenance requiring specific expertise, including electrical connection checks, compressor checks, and hydraulic circuit inspections.

13.3 Level 3 Maintenance

Advanced maintenance tasks requiring specialized skills, including major component replacement and refrigerant circuit operations.

13.4 Tightening Electrical Connections

Table detailing torque values for tightening various electrical connections on components like terminals, circuit breakers, and contactors.

13.5 Tightening Torques for Main Fastenings

Table specifying torque values (N.m) for tightening main fastenings such as compressor brackets, nuts, and fan motor mounts.

13.8 Frequency Inverter Maintenance

Important safety precautions and procedures for working on variable frequency drives, emphasizing isolation and qualified personnel.

Unit Start-Up Checklist

Preliminary Equipment Checks

Checklist for shipping damage, unit levelness, power supply, wiring, ground cable, protection, terminals, and plug assemblies.

Air Handling Systems Checks

Checklist for air handling unit operation, valve status, piping connection, air venting, and pump rotation.

Unit Start-Up Procedures

Checklist for pump connection, oil level, leak checks, and voltage imbalance, with a warning about starting if imbalance exceeds 2%.

Evaporator Water Loop Checks

Checklist for water loop volume, corrosion inhibitor, frost protection, electric tape heater, and screen filter presence.

Evaporator Pressure Drop Checks

Procedure to measure evaporator inlet/outlet pressure and pressure drop, and to determine flow rate using curves.

QUICK TEST Function and Configuration

Instructions to perform the QUICK TEST function and log user menu configuration parameters.

Temperatures and Pressures Monitoring

Procedure to record operating temperatures and pressures after the machine has stabilized, for monitoring and troubleshooting.

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