Low Tonnage Gauge Kits for Atlas™ Manual Hydraulic Presses
11
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
Summary of Contents for GS15051
Page 1: ...Low Tonnage Gauge Kits for Atlas Manual Hydraulic Presses User Manual 2I 15051 8...
Page 2: ......
Page 3: ...Low Tonnage Gauge Kits for Atlas Manual Hydraulic Presses User Manual 2I 15051 8...
Page 17: ...Notes for Use of Low Tonnage Gauge Kit...
