OP-755 Part 2 Pages 197-401 - Personal Page of GENE SLOVER

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32. Auxiliary relief valve adjustment. - The auxiliary
relief valve is adjusted at point IIRII, indicated on figure 39.
Normal setting is 100 P. S. 1. Before this adjustment
can be made a pressure gauge must be placed in line
#5 at valve block flange. With system filled with
oil, start the electric motor, then loosen nut
271702-2 and rotate adjusting screw to the desired
setting. Securely tighten nut 271702-2 after the
adjustment is obtained.
33. safety relief valve adjustment. - There are two of
the relief valves, one for each direction of ring rotation.
These relief valves are located at points designated IISIIon
figure 37. Their details are as shownon figure 42. Both valves
have been set at the factory to give a maximumreading of 2200
pounds square inch. This is the desired setting. It is therefore
only necessary to turn the
adjusting screw 271711-4 until
it bottoms, then tighten jam
nut 271730-7. If it is desired
to check the setting of these
valves it is necessary to block
271730-7
ADJUS.TING SCREW BOTTOMED
IS EQUIVALENT TO 2200 P:S.I,
the B-end output shaft to prevent
it from rotating, install
pressure gauges in lines #3 and
#4 at the valve block, then move
the operating lever each side
of neutral. Clockwise rotation
of the operating lever gives
counterclockwise rotation of
the output shaft when viewed
from shaft ends. This puts the
upper safety relief valve under
pressure. Conversely the opposite
direction of rotation puts
the lower relief valve under
pressure.
34. Adjustment for project
i l e ring stopping out of
phase. - If the ring operates
and stops at intervals of thirty
degree movements but does
not stop at ring stations, the
equipment has been connected
out of phase. To correct this
condition verify that the conits
latched position, then disconnect the Bcoupling
from the driven worm and manually
to the proper stopping position. Reconnect
Fig. 42 - Safety Relief Valve
Adjustment
trol valve is in
end output shaft
rotate the ring
the coupling.