Enerpac WEN40 Serie Manual De Instrucciones página 6

5.1 Relief Valve Adjustment
Work Holding pumps are equipped with one user adjustable relief
valve. (See (B), Figure 13.) It can be adjusted as follows:
1. Loosen jam nut.
2. Install a gauge on the pump.
3. Start the pump to allow the oil to warm.
4. Shift the valve and build pressure in the system using a 6mm
hex key. Turn counter-clockwise to decrease pressure and
clockwise to increase pressure.
NOTE: To get the most accurate setting, decrease the
pressure to a point below the final setting and then slowly
increase the pressure until it reaches the final setting.
5. Shift the valve to the neutral position, allowing the system
pressure to return to 0 psi.
6. Recheck the final pressure setting by shifting the valve and
pressurizing the system.
7. Holding the hex key tighten the jam nut.
6.0 MAINTENANCE
Frequently inspect all system components for leaks or damage.
Repair or replace damaged components.
6.1 Check Oil Level
Check the oil level of the pump prior to start-up, and add oil, if
necessary, by removing the breather cap. Always be sure
cylinders are fully retracted before adding fluid to the reservoir.
6.2 Change Oil and Clean Reservoir
Completely drain and clean the reservoir every 250 hours, or
more frequently if used in dirty environments.
NOTE: This procedure requires that you remove the pump
from the reservoir. Work on a clean bench and dispose of
used oil properly.
1. Unscrew the 10 bolts holding the coverplate to the reservoir
and lift the pump unit out of the reservoir. Be careful not to
damage the filter screen.
2. Pour all oil out of the reservoir.
3. Thoroughly clean the reservoir with a suitable cleaning agent.
Figure 13
4. Remove the pick-up filter for cleaning. Clean the screen with
solvent and a soft brush. Reinstall the filter.
5. Reassemble the pump and reservoir, installing a new
reservoir gasket.
6. Fill the reservoir with clean Enerpac hydraulic oil. The
reservoir is full when oil level is on the top mark (full mark) of
the sight gauge.
6.3 Changing the (optional) Filter Element
A return line filter may be ordered as an accessory to the pump.
The filter element should be replaced every 250 hours, or more
frequently in dirty environments. The filter manifold is equipped
with a 25 psi (1,7 bar) bypass to prevent over pressure rupture if
filter plugging occurs. Filter element replacement part number is
PF-25.
7.0 TROUBLESHOOTING (see Trouble-shooting
Guide)
Only qualified hydraulic technicians should service the pump or
system components. A system failure may or may not be the result
of a pump malfunction. To determine the cause of the problem, the
complete system must be included in any diagnostic procedure.
The following information is intended to be used only as an aid in
determining if a problem exists. For repair service, contact your
local Authorized Enerpac Service Center.
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