Operating Instructions
Form No. 102355
OPTIONAL ACCESSORIES
Pressure Regulating Controls
The pressure range for this pump is from 1000 PSI to 10,000 PSI. A
pressure regulating valve
can be adjusted to
bypass oil at a certain pressure setting while the pump continues to run. A
pressure switch
can be adjusted to stop
the pump motor at a certain pressure setting. Once the pressure falls below the setting, the switch starts the motor
again.
Generally, a pressure switch should be used with a pressure regulating valve. A pressure switch stops the motor at a
selected setting, but the hydraulic pump continues building pressure as it slows to a stop. A pressure regulating valve
bypasses this oil, preventing it from going into the system. As a result, the pressure differential can be held at about
300 PSI across the pressure range.
Adjusting The Pressure Switch
NOTE: The pressure regulating valve should be set
first at the desired maximum pressure.
1. See Figure 7. Loosen the locknut (C) on the pressure switch (B). Slowly turn the adjusting screw (E)clockwise to
increase the pressure setting.
2. Place the control valve in the advance position. Place the motor toggle switch on RUN. With the pump running
and bypassing oil at the desired pressure, slowly turn the adjusting screw (E) counterclockwise, decreasing the
pressure switch setting until the pump motor shuts off. Tighten the locknut (C) again.
3. Release pressure. Move the control valve to advance again, and check the pressure setting and motor cut-out. It
may be necessary to make a second adjustment.
A pressure switch can be used alone for operating other electrical devices (motors, solenoids, relays, etc.) located
elsewhere in the circuit.
Adjusting The Pressure Regulating Valve
NOTE: For easy adjustment of the pressure regulating valve, adjust
pressure by INCREASING to a desired pressure setting.
1.
See Figure 8. Loosen the locknut (A) on the pressure regulating valve. Using
a screwdriver, turn the adjusting screw (D) a few turns counterclockwise to
decrease the pressure setting.
2.
Connect the pump's power supply, and place the valve in the advance
position. Place the motor control toggle switch on RUN.
3.
Slowly turn the adjusting screw (D) clockwise to gradually increase the
pressure setting. When the desired pressure setting is reached, lock the
adjusting screw in position by tightening the locknut (A).
Amperage Draw
This pump can be used with portable generators because of the relatively low
amperage draw of the electric motor. The standard 115 volt motor has a maximum
amperage draw of 12 amps; optional 230 volt motor has a maximum amperage
draw of only six amps.
Hydraulic Gauge
1. Remove the pipe plug from the gauge port located above the
hydraulic outlet port(s). See Figure 9.
2. Apply a small amount of pipe thread sealant or teflon tape on the
gauge threads, and insert the gauge into the port. DO NOT
OVERTIGHTEN PIPE CONNECTIONS!
Sheet No. 3 of 4
Rev. 2 Date: 24 August 2009
Figure 8
Figure 9
