3
PAQG Models:
WARNING:
On PAQG and PANG models, you must
connect an in-line directional valve to be able to release
system pressure and return oil to the reservoir. DO NOT
release pressure by disconnecting a pressurized line.
Handling pressurized hydraulic lines can result in severe
personal injury caused by sudden release of pressurized
oil.
See illustration 5. For this model, the tool used must have a
valve in order to release system pressure to the reservoir. If the
tool does not have a control valve, you must install a remote
directional valve.
If the tool has a valve, thread a hose into pressure port
(A)
of
the pump and connect the hose to the pressure port of the tool.
Connect a return line hose from the valve to the tank port
(B)
.
If you need to install a valve, connect a hose from the pressure
port
(A)
of the pump to the pressure port of the remote valve.
Connect return line hose from the valve back to the tank port
(B)
.
Connect a hose from the valve to the tool. (Recommended Valves:
Enerpac VC Series manual, or VS/VE Series electro-actuated
control valves.)
NOTE:
Hose fittings must be torqued. See Torque Specifications
Table to the left.
PANG Models:
The manifold is designed for custom-made
valves. PANG models are shipped with a cover and gasket, which
are bolted to the manifold block. Remove the four bolts, the cover,
and the gasket. Bolt a valve on the manifold using the four holes
(C)
in the manifold block. The mounting holes have M12 x 1,75
threads, which are 0.60” [15,2mm] deep. Connect hoses to valve
outlet ports.
5.4 Venting
The pump reservoir must always be vented prior to use. Use
either the “vent screw” or “vent/fill assembly”.
a) Vent Screw:
See illustration 7A, item 1. The vent screw is
the primary means to vent the reservoir. It is located near the
hydraulic outlet port on top of the reservoir. To allow venting,
open the screw 1/2 to 1 full turn. To avoid damaging the threads
when closing the vent screw, tighten only until the screw head
slightly compresses the O-ring. Apply only about 8-10 in-lbs. [1
Nm] of torque.
b) Vent/Fill Assembly:
See illustration 7B, item 2. The vent/fill
assembly is located on the air inlet end of the pump, opposite the
vent screw. This assembly serves 3 functions; vent, fill port, and
return-to-tank port.
To use as a vent, pull up the vent/fill assembly until the first detent
is reached (see illustration 8). This is the vented position.
To use as a fill port, pull up the vent/fill assembly past the first
detent. Then, completely remove the assembly from the reservoir.
If oil level is low, add oil as described in Section 5.6.
To use as a return-to-tank port, remove the hex plug from the
vent/fill assembly and install a compatible return line. Torque
return line fitting at the vent/fill connection to 15-20 ft. lbs. [20-27
Nm].
CAUTION:
Pump reservoir must be vented using one
of the two vent options. Failure to do so may cause
cavitation and pump damage.
5.5 Mounting Pump
The pump should be mounted only in the horizontal position.
NOTE:
Vertical mounting is not recommended and may result in
hydraulic oil leakage.
a) Without Mounting Brackets:
The four holes in the bottom of
the reservoir should be used for bolting through the mounting
surface into the reservoir. Use the #10 x 5/8” fasteners included
with pump, or allow no more than 3/4” [19 mm] thread engagement
into reservoir.
NOTE:
A mounting bracket kit, MTB1, can be ordered from
Enerpac.
b) With Mounting Brackets:
Models with brackets have model
numbers ending with the letter ‘B’. The mounting bracket may
be mounted on the pump or shipped separately. To mount the
bracket on the pump, use the #10 x 5/8” fasteners included with
pump, or allow no more than 3/4” [19 mm] thread engagement
into reservoir. Mount the pump to the mounting surface using the
four slots in the mounting bracket.
5.6 Oil Level
Always check oil level with all cylinders or tools in the fully
retracted position. If they are advanced when the pump is filled,
the reservoir will be over-filled when they are retracted.
Use the sight glass on the end of the pump to check the oil level.
The reservoir is full when the pump is positioned horizontally, and
oil level is up to, but not above, the top of the sight glass. If oil
level is low, remove vent/fill assembly from reservoir (See Section
5.4b) and add oil as required.
6.0 OPERATION
6.1 Oil Level
Check the oil level of pump and add oil if necessary (See Section
5.6).
6.2 Venting Pump
Make sure the pump reservoir is vented (See Section 5.4).
6.3 Treadle Operation (PATG Models Only):
See illustration 9.
a) To Advance Cylinder:
Depress the “PRESSURE” end of treadle
and the pump will start to pump hydraulic oil to the system.
b) To Hold The Cylinder Position:
The pump will stop and hold
pressure when the treadle is in the free/neutral position (treadle
is not depressed in either “PRESSURE” or “RELEASE” positions.)
c) To Retract Cylinder:
Depress the “RELEASE” end of the
treadle to retract cylinder. To stop the cylinder from retracting,
release the treadle and return it to the hold position.
