Carver Inc 5-2
5.2 HYDRAULIC UNIT - AIR BLEED PROCEDURE
An occasional cause of hydraulic system malfunction is air entrapment in the hydraulic circuit. To purge the system,
open the release valve 1/2 turn or raise the cam release lever on 30 ton(267Kn) Models, and pump the unit about 12
times. Close the release valve and test. If pressure does not build properly, repeat this procedure.
IMPORTANT: To avoid damage to the hydraulic unit ram seal, DO NOT exceed the maximum ram travel. Refer to
Section 3 to determine the arm travel of your press. Refer to the label on the front of the hydraulic
unit.
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