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O P E R A T I O N • P A G E 3 . 3
Operation with Digital Control Panel
The digital control panel allows the user more options than the standard control panel. The
embedded microprocessor controls each sequence of the packaging operation. Settings for
the vacuum, gas, and sealing are entered as parameters through the keypad. This allows
the user to custom program every step of the packaging process. The precise vacuum
and gas pressures are controlled by a pressure based sensor. The vacuum pressure, gas
pressure, and seal time are displayed on a large 16-character LCD backlit readout, which
is easily readable in all lighting conditions. As each sequence is performed, the real-time
pressure level or cycle time is displayed.
The digital front panel can save up to 100 pre-programmed routines, which can be
retrieved at any time for specific packaging applications. With the supervisor security feature
turned on, these programs cannot be inadvertently changed.
The VACPLUS option allows the operator to run the pump from 0 to 20 seconds after the set
vacuum level is achieved.
The Gas Flush option allows the operator to introduce an inert gas into the chamber after
the vacuum stage. This option 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.
The digital front panel has an auto stop, which will automatically seal if the preset vacuum is
not reached. This feature decreases the cycle time and optimizes the vacuum level of each
product.
The digital front panel, which includes the keypad, illuminated display, and microprocessor,
uses sealed components and is conformal coated in a moisture-proof coating. The digital
front panel meets or exceeds the requirements of NEMA 4. The front of the digital display is
sealed and flush for easy cleaning.
The digital control has both pulsed vacuum and pulsed venting options for fragile product.
The digital control has a maintenance screen for testing valves and a special loop option for
multiple vacuum/gas cycles before sealing.
Figure 3.3
