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Sealing Pressure:
A label to indicate the direction in which to turn the Lower Press Platen is mounted directly below the
Lower Press Platen. To increase inter-platen pressure, turn the Lower Press Platen counterclockwise.
To decrease the inter-platen pressure, turn the Lower Press Platen clockwise. The Pressure Settings in
the Heat Sealing Guide on page 2-3 are obtained as follows:
1. Turn the Lower Press Platen clockwise until it has bottomed out
against the machine base.
2. Turn the Lower Press Platen counterclockwise until the first
“click” is detected. This Pressure Setting is zero pressure.
3. To set the Lower Press Platen to a selected Pressure Setting,
count the number of “clicks” turning the Lower Press Platen
counterclockwise, increasing pressure.
4. To set the Lower Press Platen to a new selected Pressure Setting from and existing setting, count
the number of “clicks” from the existing setting, turning the Lower Press Platen clockwise or
counterclockwise.
Settings may vary depending upon garment thickness. Normally, higher pressures will produce more
effective heat seals. However, the use of excess pressure may force adhesive through the fabric,
with an undesired result.
Difficuly in locking the Seal Arm Handle of the HS-4-C machine in a closed position is anindication of too
much inter-platen pressure. To prevent excess pressure when sealing thick garments, screw the Lower
Press Platen all the way down. A Lower Press Platen that is worn from use can cause insufficient inter-
platen pressure.
The Lower Press Platen should be replaced with Lower Press Platen SPA43941. When the pressure is too
high, preventing the machine to open by itself, this has to be done manually. After this, switch off the
machine for 5 seconds and switch it on again, resetting the machine.
CAUTION!
Use of excess pressure can cause the HS-4-C machines to become locked in a closed position
and difficult to open. Extreme pressure may severly damage the machine.
