Commissioning Of The Pump; Connecting The Oil Return Line; Connecting The Compressed Air Line; Code Of Practice - hawa 2612-7500-00-00 Mode D'emploi

Operating instructions Pneumatic-hydraulic pump
Important: The manufacturer shall not be held responsible for injury to people or damage to property caused by the use of unsuitable or exhaust oil.
Damage to the pump resulting from the above mentioned causes is not covered by warranty.
- Use a slotted tip screwdriver to remove the filler plug. (fig. in chapter 4)
- Pour the correct quantity of oil into the reservoir:
Oil volume for horizontal pump: 2.4 l
Oil volume for vertical pump: 2.2 l
For a vertical pump the useable oil volume is reduced to 1.5 l.
- Clean the edges of the filler opening with a clean cloth and refit the plug, pressing it down fully.

5.2 Commissioning of the pump

5.2.1 Start-up - horizontal operation
- Connect the hydraulic pressure hose (fig. in chapter 4).
The pump is delivered with a screw joint with cover and a union nut. Place the pump vertically, unscrew the union nut and remove the cover.
Mount a hydraulic pressure hose with DKOS10 connection.
- Unscrew the breather screw (fig. 4, page 3) by three or four turns using an appropriate screwdriver.
5.2.2 Start-up - vertical operation
- Connect the hydraulic pressure hose (fig. in chapter 4).
The pump is delivered with a screw joint with cover and a union nut. Place the pump vertically, unscrew the union nut and remove the cover.
Mount a hydraulic pressure hose with DKOS10 connection.
- Use a slotted screwdriver to extract the breather plug to position „B" (fig. 3, page 2).
5.3 Connecting the oil return line (use with a double acting cylinder)
Warning: The operations described below must be carried out with the pump in a horizontal position. The pump can be mounted vertically only when
the operations are concluded.
- If the breather plug is in its extracted position, press it fully down to position „A" (fig. 3, page 2)
- Unscrew the threaded insert from the centre of the breather plug (fig. 5, page 3) and connect a hose with a 3/8" NPTF fitting after binding the thread
with Teflon tape.

5.4 Connecting the compressed air line

- The compressed air inlet (fig. in chapter 4) is already fitted with a standard fitting for compressed air.
- This fitting is now connected with a supply line which can supply a pressure between 2.8 and 10 bar.

6. Code of practice

The pump is extremely simple to use:
- to activate the pump press gently down with your foot on the end of the treadle marked „PUMP" (fig. 6, page 3).
The pump will start to deliver pressurized oil and thereby cause the connected machine to operate.
- When the treadle is released, i.e. when you remove your foot, the pump stops but the pressure is maintained on the oil side so that the connected
machine cylinder holds the load in the position it has reached.
- to return the pressure to zero and hence retract the machine cylinder to its startin position, press the treadle in the area marked „RELEASE"
(fig. 7, page 3).

6.1 Ventilating the pump

Warning: immediately after the pump installation, the circuit may contain air locks which prevent pressurization. If the pump is unable to pressurize the
oil circuit, proceed as described below. THE FOLLOWING OPERATIONS ARE THE ONLY ACTIONS WHICH CAN BE MADE ON THE PUMP USING
THE HANDS. IN NORMAL CIRCUMSTANCES THE PUMP MUST BE OPERATED ExCLUSIVELY WITH THE FEET.
- If the pump is mounted vertically, disassemble it an place it in a horizontal position on the floor
- Lift the treadle at the „PUMP" side. There is a flat pushbutton beneath the treadle.
- Use one hand to press the „RELEASE" side of the treadle while pressing the pushbutton under the „PUMP" side with your other hand (fig. 8, page 3).
Maintain the pressure on the „RELEASE" side and the „PUMP" pushbutton for about 15 seconds.
The pump should now work correctly. If you still have problems, repeat the above mentioned procedure.
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