4.6 DIRECTION CONTROL VALVE
6. The direction control valve is located on top of the hydraulic unit on the lower right.
The direction control valve is a joy-stick that with 3 lever positions:
•
Middle position: This is the default position. When the lever is moved forward or back and then
released, the valve will always return to this position. There is no movement of the press ram in
the middle position.
•
Upper position: If the lever is pushed forward, the press ram will move upwards. As long as the
valve is pushed forward, the press ram will move. When the lever is released, the press ram will
stop and stay in this position.
•
Lower position: If the lever is pulled rearward, the press ram will move downwards. As long as
the valve is pulled rearward, the press ram will move. When the lever is released, the press ram
will stop and stay in this position. If the press ram reaches its lowest position (end of the cylinder
stroke) the pressure of the cylinder will automatically drop to almost zero, to prevent damages to
the press ram head.
4.7 HAND PUMP
7. The press is equipped with a hand pump, located on the front panel
of the hydraulic unit.
This pump can be used for manual pressing functions or when accurate
force setting is necessary.
To use the hand pump:
•
Turn off the hydraulic unit by pushing the red button on the on / off switch.
•
Hold the directional control valve (joystick) in the required position (up or downwards).
•
Start pumping the hand pump with its lever.
Page 24
► NOTE: THE HAND-PUMP SHUT OFF VALVE MUST BE CLOSED FOR THE PRESS TO
OPERATE. IF THE VALVE IS OPENED, NEITHER HAND OR POWERED
FUNCTION WILL WORK.
