Enerpac PATG3102NB Manual De Instrucciones página 4

When the pump is mounted vertically, the oil level should be
checked periodically by removing the pump and placing it on a
horizontal surface.
NOTE: Prior to mounting the pump in the vertical position, the oil
volume in the reservoir must be reduced to 127 in
leakage through the vent/fill plug. Visually, the oil level should be to
the top of the sight glass in the reservoir, or 1.75" [44,5 mm] below
the top rim of the vent/fill plug.
Oil capacity of the pump when operated in the horizontal position
is 150 in [2,5 l]. See chart for oil capacities.
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8.0 OPERATION
8.1 Oil Level
Check the oil level of the pump and add oil if necessary. (See the
"Oil Level" section 7.0
8.2 Venting Pump
Make sure the pump reservoir is vented. (See the "Venting" section
5.0)
8.3 Treadle Operation (PAT Models Only)
(See Figure 8)
8.4 To Advance Cylinder
Depress the "PRESSURE" end of treadle (1) and the pump will
start to pump hydraulic oil to the system.
8.5 To Hold The Cylinder Position
The pump will stop and hold pressure when the treadle is in the
free/neutral position, not depressed in either "PRESSURE" or
"RELEASE" positions.
8.6 To Retract Cylinder
Depress the "RELEASE" end of the treadle (2) to retract cylinder.
To stop the cylinder from retracting, release the treadle and return
it to the hold position.
9.0 4-WAY VALVE OPERATION
See Figure 9. Listed below are the Enerpac valve positions and
operations:
1. Flow to Port "B", Port "A" returns flow to tank
2. Neutral, Ports "A" and "B" are blocked
3. Flow to Port "A", Port "B" returns flow to tank
NOTE: For single-acting cylinders, port B must be blocked.
After shifting the valve, depress the treadle to start the pump. This
will direct flow to Port A or Port B, depending on the handle's
position. Releasing the treadle will stop pump flow.
NOTE: To prolong pump and cylinder life, DO NOT continue to
operate pump after cylinder is fully extended or retracted.
10.0 TREADLE OPERATION
See Figure 10. The treadle can be operated in a momentary or
maintained mode.
Momentary Operation: Press the treadle to run the pump, and
release the treadle to stop the pump.
Maintained Operation: Use the locking pin (A) (Figure 10) to hold
the treadle down for maintained operation. To lock the treadle,
press and hold the treadle. Press the locking pin and hold it in
while releasing the treadle. To release the locking pin and stop the
pump, press the treadle briskly.
11.0 PRIMING
Priming of the hydraulic pump is normally not required. However,
if the pump is run completely out of oil, it will be necessary to prime
the pump.
3 [2,1 l] to prevent
If the pump is mounted vertically, remove the pump and place it on
a horizontal surface. Fill the pump with ENERPAC hydraulic oil. Set
air pressure to 30-40 psi [2-3 bar] max.
PAT Models: While holding the treadle in the retract position,
press the air button, which is located just above the air inlet swivel
connector, and run the pump momentarily several times.
Models With 4-way Valves: Shift the valve to the neutral position,
press the treadle, and run the pump momentarily several times.
To verify that the pump is primed, operate it as normal with the
cylinder attached. If the cylinder does not advance, repeat the
appropriate steps above.
12.0 HYDRAULIC SYSTEM PRESSURE
The hydraulic pressure output of your pump is controlled by the air
pressure into the pump. Increasing the air pressure increases
hydraulic pressure, while decreasing air pressure decreases
hydraulic pressure. See Specification Chart for air-oil pressure
ratios.
13.0 STALL TO RESTART PRESSURE
Air pressure can be adjusted to maintain a constant hydraulic
system pressure. The pump will slow down and stall as the
hydraulic pressure increases. To obtain the desired system
pressure, decrease air pressure to the point where the pump stalls
just below the desired hydraulic system pressure. When the
hydraulic system pressure drops slightly, the pump will restart and
build hydraulic system pressure back up again.
NOTE: Some air leakage during stall to restart operation is
normal. This leakage is indicated by a momentary "hissing" noise.
14.0 MAINTENANCE
Maintaining Proper Oil Level: Check the oil level of the pump
prior to start-up, and add only ENERPAC hydraulic oil, if
necessary, by removing the vent/fill plug.
Cleaning the Air Inlet Filter: Remove the swivel air connector by
removing the two cap screws and pulling the air filter out of the
cavity. Using an air nozzle, blow debris off the filter. (Always use
proper eye protection). Re-install filter and swivel connector.
Torque cap screws to 16-18 in.lbs [1,8-2,0 Nm].
Changing the Oil: Change the oil every 250 hours, or more
frequently if used in dirty environments. The vent/fill plug serves as
a drain plug for use in changing oil. Refill pump with ENERPAC
hydraulic oil. Dispose of used oil properly.
Cleaning the Muffler: The muffler should be cleaned every 250
hours. On PAT Models, first remove 2 (A) shoulder bolts and
treadle (B). See Figure 11. To expose the muffler, remove the 2
screws (C) holding the muffler plate to the cover. See Figure 12.
Wash muffler element in soapy water, dry, and reassemble.
Torque screws to 17 - 19 in-lbs [1,92 - 2,15 Nm].
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