BVA Hydraulics PAR1703, PARD1701, PARD1703, PARM1703 - Manual (Page 6)

6
To reduce the risk of personal injury and/or property
damage, hydraulic connections must be securely
fastened before building pressure in the system. Release
all hydraulic pressure by disconnecting air source and
actuating the 'dump' valve (PARD series) or moving the
pump lever to 'neutral' (PAR,PARM series) and disconnect
air source from pump before loosening any hydraulic
connection in the system.
Always monitor pressure, load or position using
suitable equipment. Pressure may be monitored by
means of an optional manifold and gauge. 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.
These valves will reposition the load during
handle movement. The amount of load movement
will depend on the speed of the handle movement
between detent positions.
!
OPERATION
(refer to schematic flow path, page 5)
PAR1703 (refer to Figure 5, 7)
1. Check oil level, add oil if necessary.
2. Make sure system fittings and connections are tight and
leak free.
3. Place control valve lever in the middle (Neutral/Hold)
position to prevent accidental lifting or moving of load.
OPERATION
(continued)
PARD1701, PARD1703 (see Figure 8)
These pumps are for use with a single acting
cylinder ONLY! Connect one hose from either
pump oil output port to the input port of a single acting
application such as a cylinder. Block the unused output
port securely. This model can not be used with double
acting cylinders.
!
Port A Port B
1
2
3
Figure 7- 3-position valve (all except PARD series)
4. To start the air motor:
4a. Ensure direction control valve lever is in the '2' (neutral)
position.
4b. Connect air source to input air connection.
5. To direct fluid to and from the application:
5a. Move lever to position '1' to cause fluid to move to the
application. Maintain control valve position until the
desired pressure, load or position is reached. Note: Do
not continue to operate pump after cylinder plunger is fully
extended or retracted.
5b. Always monitor pressure, load or position using suitable
equipment. Do not load a hydraulic application (cylinder,
spreader, etc.) to more than 80% of its rated capacity.
5c. Shift the control valve until the desired pressure, load or
position is reached. Note: Do not continue to operate pump
after cylinder plunger is fully extended or retracted.
5d. Move lever to position '3' to cause fluid to return to the
tank (reservoir).
To turn air motor off:
6. Maintain lever position '3' to depressurize the system.
6a. Disconnect air source from input air connection.
PARM1703 (refer to Figure 6, 7)
These pumps are for use with a single acting
cylinder ONLY! Connect one hose from either
pump oil output port to the input port of a single acting
application such as a cylinder. Block the unused output
port securely. These models can not be used with double
acting cylinders.
!
4. To start the air motor:
4a. Ensure direction control valve lever is in the '2' (neutral)
position.
4b. Connect air source to input air connection.
5. To direct fluid to and from the application:
5a. Move lever to position '1' to cause fluid to move to the
application. Maintain control valve position until the
desired pressure, load or position is reached. Note: Do
not continue to operate pump after cylinder plunger is fully
extended or retracted.
5b. Always monitor pressure, load or position using suitable
equipment. Do not load a hydraulic application (cylinder,
spreader, etc.) to more than 80% of its rated capacity.
5c. Shift the control valve until the desired pressure, load or
position is reached. Note: Do not continue to operate pump
after cylinder plunger is fully extended or retracted.
5d. Move lever to position '3' to cause fluid to return to the
tank (reservoir).
To turn air motor off:
6. Maintain lever position '3' to depressurize the system.
6a. Disconnect air source from input air connection.
! These pumps are for use with a double acting
cylinders ONLY! They can not be used with
single acting cylinders. Ensure that both A and B ports are
properly connected to a double acting application.
Figure 8- Dump Valve Lever Positions
horizontal
horizontal
"HOLD" position:
will advance, then
hold cylinder when
motor off
"RELEASE" position:
will advance unloaded
cylinder, retract
loaded cylinder
!
!
1. Check oil level, add oil if necessary.
2. Make sure system fittings and connections are tight and
leak free.
3. Place control valve lever in the middle (Neutral/Hold)
position to prevent accidental lifting or moving of load.
1. Check oil level, add oil if necessary.
2. Make sure system fittings and connections are tight
and leak free.
3. Connect to air source.
Once connected to the intended air source, pump
will be energized and oil will flow from the pump to the
application. ENSURE operator is aware that application
will be pressurized immediately upon connecting air
source.
PARD1701, PARD1703: !
4. See Figure 8 below for details.