NuAire NU-5500E Service Manual

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NuAire NU-5500E Specifications

General

Brand	NuAire
Model	NU-5500E
Category	Accessories
Language	English

Summary

General Description

Incubator Control Electronics

Describes the microcomputer control system, its components (ROM, RAM, EEPROM), and diagnostics.

Incubator CO2 Control

Details the microprocessor-based infrared CO2 sensor and its calibration.

Performance Parameters and Features

Temperature Control System

Explains the microcomputer control, sensors, and solid-state switch for heaters.

Models & Features

Performance Parameters

Lists temperature and CO2 range, accuracy, uniformity, and recovery.

Test Performance & Procedures

Electrical Tests

Functional Tests

Lists tests performed after a 48-hour burn-in period, including control systems, CO2, temperature, and humidity.

Installation

Electrical

CO2 Connection, Regulators, and Supply

Instructions for connecting CO2 supply, regulators, adjustment, and leak checks.

DH Autoflow Operation

Control System and Features

Details the microcomputer control system, its features, expansion, diagnostics, and operator controls.

Run Mode Operation

Setup Mode Operation and Setpoints

How to operate in setup mode and enter temperature/CO2 setpoints.

Diagnostic and Checkout Procedures

Covers accessing diagnostic mode menus for testing, configuration, and master reset.

Calibration

Chamber Temperature Calibration

Procedure for calibrating chamber temperature using an independent instrument.

Door and Perimeter Temperature Calibration

How to calibrate door and perimeter heater duty cycles, including automatic control.

CO2 Calibration and Auto Zero

Covers CO2 control, sensor (zero/span), injection calibration, and automatic zeroing function.

Error Indicators & Troubleshooting

Error Indicator Troubleshooting Guide

Lists error codes, descriptions, and troubleshooting steps for temperature and CO2 systems.

Memory Chip Faults