Chapter 1: Introduction
Product Service 816-333-8811 or 1-800-522-7658
4
Original instructions
Samples Containing Volatile Substances
In certain cases the solvent in a sample to be freeze dried may contain volatile
components such as acetonitrile, methanol, acetic acid, formic acid or pyridine. In
addition to these substances having an effect on the eutectic temperature, they may
increase the vapor pressure at the surface of the sample. Also, compared to water,
they will require the absorption of less heat for sublimation to occur. Hence,
samples that contain volatile substances will have a greater tendency to melt,
particularly when placed in flasks or exposed to room temperature. If a sample
containing a volatile substance tends to melt when placed on a freeze dry system,
dilution of the sample with more water will help keep the sample frozen. For
example, a 0.2M solution of acetic acid is much easier to freeze dry than a 0.5M
solution.
About This Manual
This manual is designed to help you learn how to install, use, and maintain your
Freeze Dryer. Instructions for performing routine maintenance and making minor
modifications to your Freeze Dryer are also included.
Chapter 1: Introduction
provides a brief overview of the Freeze Dryer, explains
the organization of the manual, and defines the typographical conventions used in
the manual.
Chapter 2: Prerequisites
explains what you need to do to prepare your site before
you install your Freeze Dryer. Electrical requirements are discussed.
Chapter 3: Getting Started
contains the information you need to properly unpack,
inspect and install your Freeze Dryer.
Chapter 4: Lyo-Works Operating System
describes the display screens and user
interface software that controls the Freeze Dryer.
Chapter 5: Using Your Freeze Dryer
discusses the basic operation of your Freeze
Dryer. Information on how to attach samples and run the Freeze Dryer is included.
Chapter 6: Maintaining Your Freeze Dryer
explains how to perform routine
maintenance on your Freeze Dryer.
Chapter 7: Troubleshooting
contains a table of problems you may encounter while
using your Freeze Dryer, including the probable causes of the problems, and
suggested corrective actions.
Chapter 8: Modifying Your Freeze Dryer Display
explains how to recalibrate your
Freeze Dryer display.
Appendix A: Freeze Dryer Components
contains labeled diagrams of the
components of the Freeze Dryer.
