Lukas AHP2-1 - Manual (Page 17)

17
COD. 193553057 - v.1 - UPD 080703
6 - OPERATION
The pump is extremely simple to use:
l to activate the pump press gently down with your foot on the end of the treadle marked “PUMP” (fig.7, page 3). The
pump will start to deliver pressurized oil and thereby cause the connected machine to operate.
l 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.
l To return the pressure to zero and hence retract the machine cylinder to its starting position, press the treadle in
the area marked “RELEASE” (fig.8, page 3).
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.
l If the pump is mounted vertically, disassemble it and place it in a horizontal position on the floor
l Lift the treadle at the “PUMP” side. There is a flat pushbutton beneath the treadle.
l Use one hand to press the “RELEASE” side of the treadle while pressing the pushbutton under the “PUMP” side
with your other hand (fig.9, 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.
7 - MAINTENANCE
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 chapter 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.10, page 3).
l Use a slotted tip screwdriver of the appropriate size to unscrew the filter from the air inlet connection until it is
extracted.
l Clean the filter with compressed air and then refit and screw it into position. Do not over-tighten the filter or damage
may ensue.
l 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.
7.3.1 - Checking the hydraulic oil on the 2,5 Lt. pump.
Periodically check that the pump contains the correct quantity of hydraulic oil by checking the level on the sight glass
(fig.11a, page 3). If the oil level, with cylinder closed, is below minimum (D, fig.11a), refill using the reccomended types
of oil on page 15.
7.3.2 - Checking the hydraulic oil on the 5 Lt. pump.
Periodically check the oil level, which must be between the two notches on the oil cap dipstick (E in fig.11b, page 3).
If the oil level, with cylinder closed, is below minimum, refill using the reccomended types of oil on page 15.
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:
l If the pump is mounted vertically, disassemble it and position it horizontally.
l Use a slotted tip screwdriver to remove the filler plug (fig.12, page 14).
l Empty the pump of oil by turning it upside down over a suitable container.
l Allow all the oil to flow into the container and then fill the pump with the quantity and type of new oil specified on page 15.
l 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.