AMPLIFYING VALVE
(1.) THE OUTLINES AND HYDRAULIC CIRCUITS:
(2.) SET-UP
A. The hydraulic pressure indicated in line <p> s
hould be kept in constant during the whole stroke of the lifting cylinder, i.e. Between the very top and bottom position of the swinging saw frame.
we use springs <r> inside of lifting cylinder to balance/compensate the pressure changes (pressure
varies due to saw frame swinging up and down ) in line <p>. above procedures have been done in
our factory before machine dispatched , now for checking test, please dry run the machine by raising
the saw frame to the very top position and push the saw blade drive button, and having the quick
approach rod lifted (limit switch un-touched), then check the hydraulic pressure in line <p> by
reading the pressure gauge at line <p> to see if the pressure readings keep the same during the whole
stroke.
(maximum 1 kg/sq.cm varies allowed) the pressure reading should be as follows:
8 KG/SQ.CM ............250HAS/300HAS MODELS
10 KG/SQ.CM ............360HAS/400HAS/450HAS MODELS
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