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GB947 HYDRAULIC POWER UNIT
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PRINCIPLE OF OPERATION
Image may not reflect actual tool.
Pressurized Oil
Unpressurized Oil
RETURN Cycle
PULL Cycle
When the actuator is depressed, power is supplied to the solenoid shifting the directional valve. It then puts power to the motor
starter. The unit then sends hydraulic oil to the pull side of the installation tool moving the piston to the rear positions. The internal
components of the attached nose assembly are also moving with the piston to start the fastener installation. When the fastener
installation is complete, the actuator is released.
When the actuator is released, the circuit will supply power to the return solenoid, shifting the directional valve. The unit then sends
hydraulic oil to the return side of the tool until the return pressure switch is satisfied which then shuts the motor off until the next
cycle.
CAUTION:
Minimum operating hydraulic oil temperature 0° (18°C). Maximum oil temperature is 176° F (80°C). Powerunit should never
be run consistently with oil temperatures above 180° F (82°C) as this will cause failure to the pump. If oil is running too hot, a 5 gallon
or 10 gallon reservoir may be purchased separately, this will help dissipate the heat from the oil.