Specac GS15051, Руководство пользователя

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Low Tonnage Gauge Kits for Atlas™ Manual Hydraulic Presses
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that has been fitted, to stop any oil pressure pumped on the system
from reaching it. The valve tap (
79
) is a tapered “needle” type fitting
and will be closed when the tap handle ( 79 ) is turned hand tight in a
clockwise direction. There is an O-ring ( 80 ) on the valve tap assembly
that makes an oil-tight seal when fully closed. (See Fig 6 .)
Fig 6. Low Tonnage Gauge Open/Close Valve Tap Assembly
Close the pressure release handle (
30 ) of the press by turning
clockwise (see Fig 2. ) and begin to hand pump the press (slowly) in
the usual way. Oil will be pressurized and forced from the press
reservoir up and into the manifold body (
77 ) to register at the higher
load tonnage gauge ( 31 ) fitted at the base of the manifold body ( 77 )
and towards the shut off valve tap assembly ( 79 ). Pump to apply a
tonnage load of about 1 (one) ton (no more) against the metal block to
be registered at the higher tonnage load gauge (
31 ) as fitted.
Now, very slowly open the valve tap (
79 ) by anti-clockwise rotation of
the handle until the O-ring ( 80 ) is just beginning to emerge from the top
of the manifold body ( 77 ). (See Fig 7 .) Any air that may be trapped in
the manifold body ( 77 ) will be forced out at the top past the opened
valve tap ( 79 ) and by the O-ring seal ( 80 ) from the oil pressure that has
been pumped on the system. When air and oil is observed at the valve
tap (
79 ) by the O-ring ( 80 ), a slight decrease in the tonnage load that
has been applied at the higher tonnage load gauge ( 31 ) and a
registering of a low tonnage load at the low tonnage gauge ( 75 ) fitted
will also be observed.
80
79