# General Installation Requirements

To operate Torcflex wrenches, connect the wrench to a hydraulic power pack with a hydraulic hose. For maximum efficiency and accuracy, use Atlas Copco torque wrench pumps and hoses. If Atlas Copco pumps and hoses are not used, make sure of the following before connecting Torcflex wrenches:

- System requirements:

  - All system components must have a dynamic pressure rating of 700 bar (10,000 psi).

- Pump requirements:

  - Maximum Advance Pressure: 700 bar (10,000 psi).

  - Maximum Retract Pressure: 120 bar (1,740 psi).

  - Remote-operated directional control valve for operating the double acting cylinder; the pressure must be released when switching between Advance and Retract.

  - For safety, the remote must be configured to automatically retract the tool if the button is released.

  - Adjustable pressure relief valve.

  - Calibrated pressure gauge (Class 1 Accuracy).

  - For screw-to-connect coupling systems, make sure that the Advance coupling is male and the Retract coupling is female. For more information, refer to section Connecting the System - Screw-to-Connect Coupling.

  - Torcflex wrenches fitted with screw-to-connect couplings use CEJN 232 couplings with ¼ NPT threads. Before using alternative brand couplings in the system, verify the compatibility. For more information, refer to section Connecting the System - Screw-to-Connect Coupling.

- Hydraulic hose requirements:

  - Advance line − female to female coupling.

  - Retract line − male to male nipple.

Before connecting the system, do the following:

- On electric pumps, make sure that the power supply is appropriate for the pump and minimize the length of extension cords.

- On pneumatic pumps, make sure that the air supply is appropriate for the pump and minimize the length of air lines.

- Look for any damage on the power and pendant cables before connecting the cables to the power supply.

- Look for any damage on the hydraulic hoses and couplings before connecting the hoses to the system.

- Inspect the oil level and fill if necessary.

- Make sure that the pressure gauge is calibrated.

- Make sure that the impact sockets are the correct size for the application.

- Make sure that the impact sockets are free from damage.

- Select a wrench based on the target torque for the application.

  To prolong the lifespan of the wrench, do not operate the tool above 80% capacity for long periods. As with any machine, operating it continuously at maximum capacity will reduce its lifespan. It will also need maintenance and replacement of worn parts more often.

- For applications where the back nut can rotate, make sure that a suitable backup wrench is available.

Relevant Information

- Connecting the System - Screw-to-Connect Coupling

## Applies to: