ESPEC BTZ-133 User Manual

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Bench Top User’s Manual i

BENCH TOP CHAMBER SERIES

INSTRUCTION MANUAL

Table of Contents

Questions and Answers:

A
aclarkAug 10, 2025
What to do if the ESPEC BTZ-133 Climate chamber test area temperature exceeded chamber limits?
- M
  Matthew GeorgeAug 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.
R
Robert HansonAug 16, 2025
What to do if the humidifier’s boil-dry protector tripped in my ESPEC BTZ-133?
- C
  Cindy ScottAug 17, 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.
J
joseph92Aug 25, 2025
What to do if the thermal protector tripped in the ESPEC BTZ-133 Climate chamber's air circulator motor?
- Z
  zmooreAug 25, 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.
J
Jeffrey JohnsonSep 1, 2025
Why does the ESPEC BTZ-133's test area temperature exceed the overheat protector setting?
- J
  James DawsonSep 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 BTZ-133 Specifications

General

Temperature Fluctuation	±0.5 °C
Model	BTZ-133
Category	Climate chamber
Humidity Range	20% to 98% RH
Humidity Fluctuation	±2.0% RH
Power Supply	AC 200-240V, 50/60Hz

Summary

Chapter 1: Introduction to the Chamber

Safety Symbols Explained

Defines the safety symbols used throughout the manual for hazard identification.

Chapter 2: Precautions for Safe Chamber Usage

Prohibited Substances in Chamber

Lists explosives, combustibles, and corrosive substances to avoid introducing into the chamber.

Chamber Access Safety

Warning against entering the chamber due to risk of entrapment.

Specimen Protection Devices

Details safety devices for protecting specimens from thermal damage.

Safety Device Setting Example

Chapter 3: Chamber Overview and Control

Temperature and Humidity Control System

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

Watlow F4 Programmer/Controller

Details the Watlow F4 controller for constant and programmed environmental testing.

Chapter 4: Identifying Chamber Parts

Chamber Components Overview

Instrumentation Panel Layout

Diagram and explanation of the instrumentation panel controls and displays.

Chapter 5: Chamber Installation Guide

Installation Site Requirements

Specifies conditions and space needed for proper chamber installation.

Power Supply Requirements

Details electrical requirements for primary power supply and connections.

Drainage System Setup

Chapter 6: Operating the Environmental Chamber

Test Preparation Steps

Covers preliminary checks and preparation before running tests.

Specimen Arrangement Guidelines

Best practices for arranging specimens to ensure proper air circulation.

Proper Door Operation

Specimen Safety Device Configuration

Guidance on setting up specimen safety devices, like the overheat protector.

Test Chamber Operation Controls

Details on operating the chamber, including fault indicators and switches.

Fault Indicator Light and Reset

Run Switch Functionality

Overheat/Overcool Protector Settings

Instructions for setting overheat and overcool protector temperature points.

Controller Operation Guide

Comprehensive guide to operating the Watlow F4 controller interface.

Static Mode Controller Operation

Ramp/Soak Profile Operation

Monitoring Chamber Operation

Chapter 7: Chamber Checks and Maintenance

Routine Checks and Maintenance Schedule

Performing Chamber Checks

Overheat Protector Trip Test Procedure

Test procedure for the overheat protector before commencing tests.

Wet Bulb Wick Inspection

Essential Chamber Maintenance

Condenser Cleaning Procedure

Humidifier Cleaning Procedure

Test Area Cleaning

Chapter 8: Troubleshooting Chamber Issues

Diagnosing Chamber Faults

Information on common chamber faults and initial troubleshooting steps.

Alarm Indicator Light Faults

Details faults triggering the alarm light and their corrective actions.

Operator Error Troubleshooting

Addresses issues related to operator error and non-self-check problems.

User-Level Servicing Procedures

Resetting Circuit Protectors

Chamber Defrosting Procedure

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