ESPEC BTX-475 User Manual

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Bench Top User’s Manual i

BENCH TOP CHAMBER SERIES

INSTRUCTION MANUAL

Table of Contents

Questions and Answers:

M
Monica AtkinsAug 10, 2025
What to do if the ESPEC BTX-475 test area temperature exceeded chamber limits?
- S
  susanhernandezAug 10, 2025
  If the ESPEC Climate chamber's test area temperature exceeds chamber limits, it's likely due to a component failure. A thermal fuse replacement is needed. First, remove power from the machine and identify the cause of the overheat. If needed, call for service. After replacing the thermal fuse, reapply power, press the Fault Reset Switch, and turn the Chamber Run Switch to the run position. Monitor the chamber temperature to ensure it stays within the set limit.
J
Jessica MooreAug 17, 2025
What to do if the humidifier’s boil-dry protector tripped in my ESPEC BTX-475 Climate chamber?
- J
  Jennifer JonesAug 18, 2025
  If the humidifier’s boil-dry protector tripped on your ESPEC Climate chamber, it means the humidifier surface temperature rose too high. Turn the Chamber Run Switch off. Check the water level in the humidifying tray water level regulator. Allow the chamber to cool down for a while. Then, press the Fault Reset switch and turn the Chamber Run Switch back to the run position to resume testing. If the issue persists, call for service.
N
Natalie VazquezAug 25, 2025
What to do if the thermal protector tripped in the ESPEC BTX-475's air circulator motor?
- P
  Patricia AustinAug 26, 2025
  If the thermal protector in the air circulator motor tripped in your ESPEC Climate chamber, it means the air circulator motor is overloaded, possibly due to a fan or fan shaft obstruction. To resolve this, turn the Chamber Run Switch off. Remove any obstructions from the shaft or fan and let the chamber cool down. Afterward, press the Fault Reset switch to reset the alarm and turn the Chamber Run Switch back to the run position. Resume testing. If the alarm triggers again, call for service.
A
Ashley BoydSep 1, 2025
Why does the ESPEC BTX-475 Climate chamber's test area temperature exceed the overheat protector setting?
- M
  Monica JohnsonSep 1, 2025
  If the ESPEC Climate chamber test area temperature exceeds the overheat/over-cool protector setting, it could be due to heat generated by specimens or an improperly set overheat protector. Turn OFF the Chamber Run Switch. Remove any heat sources and increase the overheat protector setting. Then, press the Fault Reset switch to clear the alarm and turn the Chamber Run Switch back to the run position. If the alarm persists, call for service. Alternatively, ensure the test area door and cable port are closed and reduce any excessive cooling sources. Then, press the Fault Reset switch to reset the alarm and turn the Chamber Run Switch to the run position to resume testing. If the alarm occurs again, call for service.

ESPEC BTX-475 Specifications

General

Humidity Range	10% to 98% RH
Controller	Microprocessor-based
Temperature Fluctuation	±0.3°C
Humidity Fluctuation	±2% RH
Internal Volume	475 liters

Summary

Introduction

Safety Symbols

Explains safety symbols used in the manual for user safety.

Precautions in Usage

Substances Not to Be Placed Inside Equipment

Lists dangerous substances to avoid in the chamber to prevent fires/explosions.

Chamber Entry Safety

Warning against entering the chamber due to risk of entrapment.

Specimen Protection Safety Devices

Explains safety devices to protect specimens from thermal damage.

General Usage Precautions

Overview

Temperature and Humidity Control

Explains the Bi-Modal PID system for temperature and humidity control.

Watlow F4 Programmer/Controller

Details the Watlow F4 controller for constant and program modes.

Names and Functions of Parts

Instrumentation Panel Interface

Explains the controls and displays on the instrumentation panel.

Installation

Installation Site Requirements

Describes required conditions and space for chamber installation.

Power Supply Work and Connections

Humidity Water Supply Setup

Operation

Test Preparation Procedures

Specimen Safety Device Configuration

Controlled Specimen Power and Time Signal

Test Chamber Operation Controls

Controller Interface Usage

Explains how to use the Watlow F4 controller interface.

Checks and Maintenance

Routine Equipment Checks

Equipment Maintenance Procedures

Troubleshooting

Chamber Fault Diagnosis

General information on chamber faults and alarm indicators.

Alarm Indicator Light Faults

Lists faults causing the alarm light and recommended actions.

Operator Error Troubleshooting

Addresses problems not found with self-checks and operator errors.

User-Level Servicing and Resets

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