Heidkamp W00307 Manual De Instrucciones página 12

3.2 Double Action Installation
3.2.1 The connection of the quick plugs is, if possible, even more important
here, since a bad connection will not only prevent the device from
functioning, it may also generate excessive pressure build-up that may
cause the cylinder to break. Take note of which hose connects to the
thrust chamber and which to the return chamber.
3.2.2 The double acting cylinders are equipped with a mechanical limit switch
capable of withstanding the nominal pressure. You can therefore carry
out the test described in the previous section. If you are working with another type of cylinder
and are not 100% sure, do not carry out this test.
3.2.3 Release the pump drive lever by removing the hook from the lever-holder housing.
3.2.4 Turn the control of the distributing valve to the central position and pump a few times to fill the
internal channels with oil.
3.2.5 Turn the lever to one side and pump. Oil will flow through the hose connected to the side to
which the valve lever is rotated. If this hose is connected to the cylinder´s thrust chamber, the
piston will move forward. The oil in the return chamber will flow freely through the other hose
to the pump tank. Until the moment the cylinder connects with the load, flow is supplied by
both the large and small pistons.
3.2.6 Continue pumping until you reach the limit switch. At this moment an internal large piston relief
valve will be triggered, and only the oil supplied by the small piston will be available. Subject the
installation to pressure to check for leaks.
3.2.7 Stop pumping and check (preferably using a pressure gauge) that the installation maintains the
pressure level.
3.2.8 Turn the valve lever to the other side and pump. Oil will flow to the return chamber and the
piston will move back. The oil in the thrust chamber will flow freely back to the tank.
3.2.9 Repeat the processes as many times as necessary until you are comfortable handling the device.
3.2.10 If using close or check valves, or working with various cylinders via flow distributors, remember
to take into consideration the effect theses accessories may have on the functioning of the
device, and establish an operating procedure in order to avoid unwanted effects.
4. Maintenance
- Oil level check.
With the pump in vertical position (base downwards), unscrew or pry off the plug. On the
W00307 model the level is obtained by overflow through the filling hole. On the other models
check the level on the dipstick.
This check must be carried out with the cylinder fully retracted. Excessive amount of oil in the
tank will lead to internal pressures which will hamper the function of the pump.
Filter the oil before filling up the pump.
- Once the equipment is being used the areas exposed to wear and oxidation must be cleaned
and greased.