BVA Hydraulics P1201, P1201S, P2301, P2301M, P4301 - Manual (Page 5)

OPERATION
WARNING: 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.
1. Remove the threaded plug, then connect the pump to
suitable application.
2. Ensure the oil level is correct and the system fittings and
connections are leak free before operating the pump.
3. Pump may be used in horizontal and vertical position
as illustrated on Figure 6.
5
Position 1: Pressurized
oil flows to port A, port B
returns flow to reservoir
Position 3: Pressurized
oil flows to port B, port A
returns flow to reservoir.
Position 2: Neutral,
ports A and B are
closed. Hold Position.
Port A Port B Port A Port B Port A Port B
P R P R P R
(a) 4-way, 3-position valve for Double Acting Cylinder
Position 1 (Advance):
Pressurized oil flows to
port A.
Position 3 (Retract):
Port A returns flow to
reservoir .
Position 2 (Hold):
Neutral, port A is closed.
Hold Position.
Port A Port A Port A
(b) 3-way, 3-position valve for Single Acting Cylinder
Port A Port B
1
2
3
P R P R P R
Figure 7 - Flowpath of the valve positions and operations for Model P2301M.
Figure 6 - Horizontal and Vertical Position
For models P1201, P1201S, P2301 & P4301:
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
counterclockwise (never more than 2 full turns).
CAUTION: 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.
For model P2301M:
Use the control valve lever to control the direction of hydraulic
oil flow, refer to Figure 7(a) below. 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.
NOTICE: To use with 3-way setting shown in Figure 7(b)
such as single acting cylinders, please have an authorized
service center changes the valve to 3-way valve. Consult BVA
Hydraulics Technical Service 888-332-6419.
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