Oil that leaks from the point where the hydraulic piston comes out of the cover of the
machine can also be a sign that the directional valve seal has failed. A failed directional
valve seal will affect machine performance and cause uneven and inconsistent crust
formation. Contact Comtec to see if a seal repair kit is available for your machine.
4.8. High Pressure Valve
An improperly functioning High Pressure Valve will cause a loud “screeching” sound
ONLY when the machine is pressing. There is a brief procedure that can be done in
the field to correct this problem.
(1)Locate the High Pressure Valve
(2)Loosen the lock nut at the base of its “T” handle.
(3)Turn the “T” handle 3 full turns counterclockwise, then turn the “T” handle 3 full
turns clockwise.
(4)Retighten the lock nut at the base of the “T” handle.
In many cases this procedure will resolve a “screeching” High Pressure Valve. If the
problem continues, contact Comtec to see if a replacement valve is available for your
machine.
4.9. Low Pressure Valve
An improperly functioning Low Pressure Valve will cause a loud “honking” sound
ONLY when the machine is pressing. This sound has been described as a “goose in
distress”. There is a brief procedure that can be done in the field to correct this
problem.
(1)Locate the Low Pressure Valve
(2)Loosen the lock nut at the base of its adjustment screw.
(3)Turn the adjustment screw 3 full turns counterclockwise, then turn the adjustment
screw 3 full turns clockwise.
(4)Retighten the lock nut at the base of the adjustment screw.
In many cases this procedure will resolve a “honking” Low Pressure Valve. If the
problem continues, contact Comtec to see if a replacement valve is available for your
machine.
5.1. Motor cover rubbing
The top of the electric motor on Comtec presses is a cover for the motor’s cooling fan.
This is not a load bearing surface. If a heavy weight is rested on top of the fan cover,
the inside of the cover will begin rubbing against the cooling fan. This will produce a
sound that is noticeable when ever the machine is turned on. The wear from the fan
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