BVA Hydraulics P8701, P8701M - Manual (Page 4)

BEFORE USE
1. Before using this product, read the instruction manual
completely and familiarize yourself thoroughly with the
product, its components and recognize the hazards
associated with its use.
2. Verify that the product and the application are compatible.
Inspect before each use. Do not use if bent, broken,
leaking or damaged components are noted.
3. Replace worn or damaged parts with BVA Hydraulics
authorized replacement parts only. Lubricate as
instructed in Maintenance Section.
4. Ensure method of confirming load is accurate and
working properly. Have gauge or load cell accuracy
verified by qualified personnel on a yearly basis.
5. Turn the top cap of the vent screw counter-clockwise
to open the vent before use. Turn the cap clockwise to
close the vent screw when moving or storage.
4
Figure 3 - Turn the top cap counter-clockwise to
open the vent before use.
SETUP
IMPORTANT: The pump’s maximum working pressure is
10,000 PSI. Make sure that all hydraulic equipment such
as cylinders, hoses, couplers and etc. used with this pump
are rated at 10,000 PSI operating pressure or more.
1. Depressurize system by opening release valve counter-
clockwise, but no more than 2 full turns. Then, carefully
remove the threaded plug on oil outlet port, connect
3/8”NPTF hydraulic connection to oil outlet port, i.e.
coupler, hydraulic hose, fitting etc. Ensure all fluid ports
and thread connections are clean before connect.
Note: Always secure threaded connections with non-
hardening pipe thread compound. Take care not to introduce
compound into port orifices. Tighten securely to prevent
accidental removal of components while in use.
2. For model P8701M: The pump comes with a 4-way
valve to use with double acting cylinder. Connect two
hoses: connect one hose from the pressure port of the
pump to the pressure port of the cylinder; connect the
other hose from the retract port of the pump to the retract
port of cylinder.
If using on single acting cylinder, the valve needs to be
changed to 3-way valve. Consult BVA Technical service
888-332-6419.
3. Install a pressure gauge in-line from the pump for better
control and safety purpose.
4. Tighten securely to prevent accidental removal of
components while in use.
5. Check for leaks in system and have repaired by qualified
personnel as needed. Depressurize the hydraulic system
before servicing.
OPERATION
ALWAYS monitor pressure, load or position using
suitable equipment. Pressure may be monitored by
means of an optional manifold and gauge (contact BVA
Hydraulics). Load may be monitored by means of a load
cell and digital indicator. Correct application position can
only be determined by the operator of the equipment.
NEVER operate pump with release valve closed and
disconnected from application. If operated in this condition,
the hose and connections become pressurized. This
increases burst hazard. Damage may occur to pump and
its components.
1. Remove the threaded plug, then connect the pump to
suitable application.
2. Ensure the oil level is within 1/4” (6mm) of the vent screw
opening and the system fittings and connections are leak
free before operating the pump.
3. For model P8701:
A. Close release valve by turning it clockwise. Finger
tight ONLY. Using tools on release valve can
damage it and cause the pump to malfunction.
B. Pump handle until desired pressure, load or
position is reached.
C. Pressure will maintain until the release valve is
opened.
D. To retract application, turn the release valve knob
slowly counter-clockwise (never more than 2 full
turns).
4. For model P8701M:
Use the control valve knob to control the direction
of hydraulic oil flow, refer to Figure 4(a) on page 5.
Pump handle until desired pressure, load or position is
reached.
! WARNING: Operate double-acting cylinder only
when both hoses are connected to the pump. If one
coupler is left unconnected, high pressure will build
behind the coupler which could cause personal injury
and/or equipment damage.
Note: To use with 3-way setting shown in Figure 4(b) for
application such as single acting cylinder, please have
an authorized service center to change the valve to 3-
way valve. Consult BVA Hydraulics Technical Service
888-332-6419.
5. Under no load or 1st stage condition, the pump operates in
high flow for rapid advance. When load is contacted, the
pump will automatically shifts to the 2nd stage for building
pressure. When pump pressure reaches approximately
290 psi, you must momentarily stop pumping and raise
the handle to shift to the high pressure stage. After the
pump shifts, pumping takes less effort.
Note: Operate pump handle at slower speed during the
high flow 1st stage to ensure the pump deliver maximum
oil volume.
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