Hobart HT120A-1 Installation Manual

Vacuum Packaging

Machines

Instruction Manual

Model
HT120A-1 ML-44199-BJ
HT120DG-1 ML-44200-BJ

701 S. RIDGE AVENUE

TROY, OHIO 45374

937 332-3000

www.hobartcorp.com

FORM 35506 Rev. A (07-05)

Vacuum Packaging

© HOBART, 2005

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Introduction

Manual Overview

Vacuum Packaging

HT120A-1 & HT120DG-1

SAVE THESE INSTRUCTIONS

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:

Note

A note is information that you need to know, but it is not an actual
step in the procedures.

Tip

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

Note

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.

Note

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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