Drytac HOT PRESS HGP260 Manuel de l'opérateur - Page 11
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When in Program mode, either the minutes or seconds digits will be flashing to indicate that you may
change them as desired.
To Change the Preset Time
Enter the Program mode by pressing Button 1; either the minutes or seconds digits will flash. To
alternate between minutes and seconds press Button2. Use Button 3 to increase or Button 4 to
decrease the time. Once the desired value has been set, press Button 1 to return to set mode.
To Start the Vacuum Cycle
In Set mode (when no digits are flashing), press Button3 to start the cycle. The timer will indicate
that the pump is on and begin to count down. Once the preset time has elapsed, the pump will
stop, the vacuum will be released and the counter will return to showing the preset time.
If you wish to stop the cycle part way through, simply press Button 4. This will stop the pump,
release the vacuum and reset the timer.
MANUAL OPERATION
Switching the PUMP switch to MANUAL position will cause the pump to start. The pump will run
until the switch is returned to the AUTO position.
The Timer also has a manual mode, which allows it to be used as a simple On/Off switch. Press
Button 2 depressed, press Button 1. The timer will display the word hAnd. Pressing Button 3
(start) will switch the pump on; pressing Button 4 (stop) will switch it off. To return to automatic
operation, press Buttons 2 and 1 as described above. Although this facility is available, we
recommend that you use the AUTO/MANUAL
switch rather than the "hAnd" function.
PRINCIPLES OF OPERATION
Your Hot Press Glass Top Vacuum Press is
precision engineered to deliver the optimum heat
and pressure for a variety of mounting and
overlaminating
applications.
coating is applied to the upper surface of the
lower of two sheets of tempered glass that form
the lid of the press. When an electrical current is
applied to the coating, the glass heats up in a
very even and consistent manner. When the lid
is closed onto the gasket around the outside of
the bottom frame, it forms an airtight chamber from
which air is drawn out by the vacuum pump. The vacuum causes the flexible diaphragm in the
base, and any materials placed on it, to be pressed against the glass, thus applying the heat and
pressure needed to bond materials together.
KEY PROCESSING FACTORS
There are three key processing settings that apply to virtually all mounting and laminating jobs.
•
Temperature
•
Time (Dwell)
•
Pressure
Temperature: The temperature setting is primarily dictated by the requirements of the heat-
activated adhesives used in the dry mounting tissue and the over laminating film recommended for
A
conductive
Illustration 10A: Key processing factors
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