Maintenance; Checking Connections; Cleaning The Air Filter; Checking The Hydraulic Oil - hawa 2612-7500-00-00 Mode D'emploi

Operating instructions Pneumatic-hydraulic pump

7. Maintenance

Important: - Any repair or servicing that requires dismantling the pump must be performed in a dirt-free environment by a qualified
technician.
- Dispose of machine and oil properly.
The routine maintenance work described below must be performed exclusively by a skilled technician who has a thorough knowledge of the pump and
its operation and who has read this manual completely. Maintenance must be carried out with maximum caution to avoid possible accidents. This chap-
ter describes the only maintenance procedures permitted. Execution of any unauthorised maintenance work will automatically invalidate the warranty
and free the manufacturer from all liability.

7.1 Checking connections

Check the hydraulic and pneumatic connections once a week. Ensure that the connections on the pump are screwed down tightly and show no signs of
breakage, cracks or other damage. Ensure that the hoses are not damaged in any way (cuts, abrasion, cracks, etc.).

7.2 Cleaning the air filter

There is an air filter inside the air inlet connection (fig. 9, page 3).
- Use a slotted tip screwdriver of the appropriate size to unscrew the filter from the air inlet connection until it is extracted.
- Clean the filter with compressed air and then refit and screw it into position. Do not over-tighten the filter or damage may ensue.
- Reconnect the air line quick coupler after binding the thread with Teflon tape
If the air filter is excessively contaminated or damaged, it must be renewed. Order a new filter from the manufacturer, referring to the list of spare parts at
the end of this manual.

7.3 Checking the hydraulic oil

Periodically check that the pump contains the correct quantity of hydraulic oil by checking the level on the sight glass (fig. 10, page 2). If the oil level,
with cylinder closed, is below minimum (D, fig. 10), refill using the recommended types of oil on page 16.

7.4 Hydraulic oil change

Change the oil at intervals of 250 duty hours. This operation must be performed when the cylinder is fully retracted:
- If the pump is mounted vertically, disassemble it and position it horizontally.
- Use a slotted tip screwdriver to remove the filler plug (fig. in chapter 4)
- Empty the pump of oil by turning it upside down over a suitable container.
- Allow all the oil to flow into the container and then fill the pump with the quantity and type of new oil specified in chapter 4.
- Clean the filler opening with a clean cloth and refit the plug, pressing it fully down or, if necessary, to the partially inserted breather position.

7.5 Periodic cleaning

Important: The greatest single cause of failure in hydraulic pumps is dirt. Keep the pump and attached equipment clean to prevent foreign matter
from entering the system. A routine should be established to keep the pump as free from dirt as possible. All unused couplers must be covered with
protection caps. All hose connections must be free of grit and grime. Any equipment hooked up to the pump should also be kept clean. Use only häwa
hydraulic oil in this unit and change as recommended (every 250 operating hours).

8. Scrapping and disposing of the pump

If the pump is no longer required for duty empty the oil and dispose of it in accordance with the law of your country.
The same procedure must be followed for other parts of the pump, in observance of the type of material (plastic or metal).
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