Thermal Care ACCUCHILLER EQ User Manual

Thermal Care ACCUCHILLER EQ Specifications

General

Brand	Thermal Care
Model	ACCUCHILLER EQ
Category	Chiller
Language	English

Summary

Safety Guidelines

Safety Symbol Explanations

Explains common safety symbols used in the manual, including warnings and mandatory actions.

Safety Precautions

General Warnings and Hazards

Critical warnings on equipment misuse, electrical hazards, refrigerant risks, and sharp/hot surfaces.

Operational Safety Requirements

Essential safety measures for installation, maintenance, and operation, including PPE and power control.

Installation - Chiller

Unit Storage Requirements

Guidelines for protecting the unit during storage to prevent damage.

Foundation and Location

Specifies requirements for the mounting pad, leveling, and unit placement for optimal operation.

Rigging and Piping

Covers safe rigging methods and considerations for chilled process fluid and condenser water piping.

Installation - Remote Condenser

Remote Condenser Location and Lifting

Details on outdoor placement, ventilation, and safe lifting procedures for the remote condenser.

Mounting Legs and Ventilation

Instructions for attaching mounting legs and ensuring adequate airflow for the condenser.

Refrigerant Piping Design

Interconnecting Piping

Covers the required piping between the chiller and remote condenser and design considerations.

Piping Design Guidelines

Specifies general considerations for refrigerant line sizing, length, and elevation.

Line Sizing Calculations

Equivalent Length Determination

Steps to calculate equivalent pipe length for accurate line sizing.

Liquid Line Sizing

Guidance on sizing liquid lines for optimal pressure drop and refrigerant charge.

Discharge Line Sizing

Hot Gas Riser Design

Details on upflow riser traps and oil management for discharge lines.

Discharge Line Pitching and Riser Systems

Covers pitching requirements and recommendations for double riser systems for oil return.

Refrigerant and Oil Charge

Calculating System Charge

Method for determining the total refrigerant and oil charge for the system.

Condenser Fan Control

Electrical Installation

Wiring and Voltage Checks

Compliance with codes, voltage verification, and phase sequence checks for electrical setup.

Controller Operation

Controller Interface and Boot-Up

Describes the controller's initial boot sequence and the function of its interface buttons.

Controller Menus - User & Main

User Menu Navigation and Functions

How to navigate the User Menu for ON/OFF, Info, and SET parameters.

Main Menu Structure and Access

Accessing the Main Menu via PRG button, covering Process, HGBP, Alarms, and Settings.

User Menu Parameter Details

Start/Stop, Compressor, and HGBP Status

Displays status for unit start/stop, compressor, and Hot Gas Bypass valve.

Process, I/O, and Running Hours

Shows status for process parameters, Universal/Digital I/O, and unit running hours.

Setpoint, Remote Control, and Modbus

Covers setpoint adjustment, remote control, and Modbus communication settings.

Power On AutoStart

Configuration option for automatic unit startup after power restoration.

Main Menu Setup - User & Manufacturer

Antifreeze, Condenser, and Fluid Settings

Configuration for antifreeze setpoint, condenser type, and fluid temperature options.

Fan, Phase, Alarm, and Makeup Options

Settings for fan overload, phase monitor, alarm outputs, and automatic fluid makeup.

Process Control and Remote Setpoint

Options for Return Fluid Temperature control and enabling Remote Setpoint functionality.

Main Menu Setup - Service & Process

Flow, Setpoint Limits, and Run Hours

Adjustments for flow alarms, setpoint limits, and resetting component run hours.

Hot Gas Bypass and PID Settings

Configuration for HGBP control mode, setpoint, and PID loop parameters.

Alarm Logs and System Settings

Functions for exporting alarms, setting date/time, unit of measure, and Modbus parameters.

Initialization and Logout

Parameter management and exiting password-protected settings.

Modbus RTU Communications

Modbus Parameter Register Map

Detailed table of registers for Modbus RTU communication with the controller.

Alarms and Fault Logic

Alarm Status and Navigation

Understanding alarm indicators, accessing logs, and identifying active alarms.

Alarm Type and Reset Definitions

Table detailing alarm types, fault logic, reset locations, and reset types.

Initial Start-Up Procedures

Power Connection and Coolant Filling

Steps for connecting main power, checking phase sequence, and filling the coolant circuit.

Water Chemistry Requirements

Guidelines for ensuring proper water quality for the coolant system to prevent issues.

Cooling Water Management

Water Quality Impacts

Discusses unwanted effects of improper water quality and key properties.

Water Chemistry and Glycol Tables

Lists fill water chemistry limitations and recommended glycol solutions for freeze protection.

Start-Up Component Checks

Condenser, Valve, and Freezestat Verification

Procedures for checking the condenser, refrigerant valves, and setting the freezestat.

Power, Flow, and Initial Operation

Steps for turning on control power, establishing coolant flow, and initial unit temperature control.

Preventive Maintenance Schedule

Weekly Maintenance Tasks

Routine checks for condenser coils, set point temperature, and pump discharge pressure.

Monthly and Quarterly Tasks

Electrical connection checks, voltage verification, and technician inspections.

General Troubleshooting Guide

Compressor and Pump Troubleshooting

Diagnosing and resolving issues with compressor and pump operation.

Pressure and Temperature Control Problems

Addressing low/high refrigerant pressure and erratic temperature control issues.

Troubleshooting and Drawings

Insufficient Cooling Diagnosis

Identifying causes for inadequate cooling performance.

Reference Drawings

Information on accessing custom unit drawings for installation and service.