GEARENCH U155L PETOL HYDRA-TORK - Manual (Page 14)

12
Operation
Controls
The operating controls are shown on Figures 1 and 2 on page 16.
The disconnect switch is used to disconnect electrical power to the controls. When this
switch is on, the motor may be started.
The POWER ON switch will start the hydraulic pump motor. It contains an indicator light
to show that the motor is on. The POWER OFF switch is used to stop the motor.
The FILTER indicator light is used to monitor the hydraulic filter. If this light is on while a
cylinder is traveling the hydraulic filter element, located in the lower portion of the console,
is dirty and must be replaced. Use Hycon 0085-MA-010-P element or equal.
The LIFT UP and LIFT DOWN buttons are used to control the operation of the tong lift
cylinder. Press the LIFT UP button to raise the tong off the tool. Press the LIFT DOWN
button to lower the tong onto the tool.
WARNING: Never operate the tong without making sure that the lift cylinder is
fully retracted. Failure to do so could damage the lift cylinder, tong, or
downhole tool.
The LIFT-TORQUE selector switch changes operation from the tong lift to the main
cylinder.
The TONG RATCHET and TONG ENGAGE buttons are used to control operation of the
main cylinder. Press the TONG ENGAGE button to apply torque. Press the TONG
RATCHET button to ratchet the tong back to the pull down position.
The pressure control knob is used to adjust the overall system pressure. Turn the knob
clockwise to increase pressure or counter-clockwise to decrease system pressure.
WARNING: Never operate the tong with a pressure higher than required to
perform the make up or break out operation. Operation at excessive pressure
may damage the downhole tool and/or injure personnel.
The hydraulic pressure gauge is used to indicate the current system pressure in psi. A
conversion chart for equating the hydraulic pressure in psi to the torque output in ft-lbs
follows: