TROUBLESHOOTING
11
Symptom
Probable Cause
Action
No Vacuum
Pump, fittings, “solenoid”
Perform check below
Levelness
see Page 5
Hinge Adjustment
see Page 5
Low Vacuum
Materials extending
Reposition materials
across rubber edges
placed in press
Vent Cloth
Check position, clean
or replace
Leak in diaphragm
Locate and patch or
replace diaphragm
No Heat
Not plugged in
Check power cord
Power supply off
Check circuit breaker
Power Switch off
Check position
Heat off
Check control
setting
Controller malfunction
Contact Bienfang
®
Technical Service
Uncontrolled Heat
Controller Malfunction
Contact Bienfang
®
Technical Service
Solid State relay (does press heat
up over temp. even when not
calling for heat)
Bumps, pits
Cleanliness
Clean platen
Bubbles, no adhesion
Improper adhesive
Check specifications
Inadequate time
Reprocess longer
High moisture level
Reprocess longer
Low/uneven pressure
See low vacuum
Low/high temperature
Check specifications
Checking the Pump and Fittings
To check attachment of the vacuum pump and tubing, open the press and fold the vent cloth forward exposing the two
vacuum manifolds Please a small piece of thin plastic, rubber of similar material (i.e., inner tube, heavy shrink wrap or
plastic film approximately 6" x 6") over each vacuum manifold.
Press the “Manual On/Off” key to run the vacuum pump on and observe the reading on the Vacuum display. If the display
does not read a good vacuum (over 20" Hg), check the vacuum line for leaks. If there are no leaks in the line then have
the pump repaired or replaced. If the vacuum display reads over 20" Hg, then the pump, lines and fittings are all fine.
After completing these checks, press the “Manual On/Off” key to turn the vacuum pump off, remove the pieces of plastic
or rubber from both manifolds and reposition the vent cloth.
