Hobart HT120A-1 Installation Manual

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Vacuum Packaging
Model HT120A-1 ML-44199-BJ HT120DG-1 ML-44200-BJ
TROY, OHIO 45374
937 332-3000
FORM 35506 Rev. A (07-05)
Vacuum Packaging
© HOBART, 2005
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Manual Overview

Vacuum Packaging
HT120A-1 & HT120DG-1
Please read this manual carefully to learn how to correctly operate and maintain your Vac Pak Single Chamber Packaging Machine. Failure to do so could result in equipment or product damage. Consider this manual a permanent part of your machine. Keep it in a safe, protected area of your facility.
The following special instructions are used in the manual:
A note is information that you need to know, but it is not an actual step in the procedures.
A tip is additional information that may be useful when you are using the system.
Look At This
Look At This is information to alert you that you may be doing something that will permanently alter your system.
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Vacuum Packaging

Gas Flush Option (HT120DG Only)

Gas flushing is the introduction of an inert gas into the chamber after the vacuum stage is finished. Gas can be used as a filler to prevent crushing of the product after sealing, as a means to prolong shelf life, or as a means to maintain desirable product appearance. Commonly used gases include nitrogen, carbon dioxide, or a mixture of both. Consult your local gas supplier to select the proper gas for your product.
As gas is introduced into the chamber, vacuum pressure is reduced by a corresponding amount. Since the seal bar mechanism depends upon vacuum pressure inside the chamber to raise the seal bar during the sealing process, reduced vacuum pressure inside the chamber would also reduce the sealing force of the seal bar. For this reason, all machines with the gas flush option are equipped with a valve that allows the same gas, which is used to flush the chamber to raise the seal bar. As a result, there is no loss of sealing force when the gas option is used
Look At This
DO NOT use an oxygen-enriched gas (greater than 22%) in the gas flush option. Be aware that when using the optional gas flush feature the gas fills the entire chamber. Once the package is sealed and the lid opens the residual gas is released into the room. Some gases can be dangerous for human inhalation and even cause death.
Gas Flush Connection
When NOT using the gas flush option, turn the gas tank OFF and remove the hose. If hose remains attached, the seal bladder will not operate properly.
For machines equipped with the gas flush option, the customer must supply a suitable regulator with a range of 0 to 60 p.s.i. We recommend using a ¼ inch I.D. food-grade flexible hose with a maximum hose length of 15 feet. We also recommend a maximum regulator pressure of 15 p.s.i. for use with the machine.
When NOT using the gas flush option, turn the gas tank OFF and remove the hose. If hose remains attached , the seal bladder will not operate properly
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