LITHIUM SERIES® Electric Torque Tool (BTM and BTM-DOC Models) Operations Manual
12
SET TORQUE
SET ANGLE
SET RELEASE
• Push the left button h to increase the Torque value. Push the right button i to decrease.
• Torque may be set to any value from the minimum to the maximum capability of the tool (or MAX
MIN Torque Limits set in the ADMIN menu).
• Torque can be displayed in lb-ft, N-m, kgf-m or %. (See output unit settings under the ADMIN
menu)
• The Torque rotational direction arrow and the rotating nut icon reflect the direction associated with
the specific fastener type. The fastener type may be set under the Operation – Fastener Type menu.
• Certain bolting specifications may require an Angle value in-addition to or instead of a Torque
value.
• The current Angle setting will be displayed in “TT + DDD” format. TT = number of turns and DDD =
angle. Value can be increased or decreased using arrow buttons from “0 + 0” to “99 + 359”.
• Push the left button h to increase the Angle value. Push the right button i to decrease.
• If an Angle value is set the tool will add the desired angle of rotation by applying additional torque
after the completed Torque operation, up to the maximum output of the tool.
• The Angle feature is actuated by holding the trigger after the tool has completed Torque operation.
• Angle is applied after a time delay set in the Angle Delay menu – typical ½ to 3 seconds.
• When the tool achieves the Torque value (and Angle, if set) the motor automatically stalls and the
gear box continues to exert force (and reaction force) essentially locking the tool onto the nut.
• Set a Release Angle to reverse the motor slightly thus taking the applied force o the gear box and
reaction point and releasing the tool from the nut without loosening the nut.
• The Release Angle setting may vary depending on the application and may need to be developed
iteratively by testing the value on the application; the objective is to set the minimum RELEASE
angle required to release the tool without applying a force that would turn or loosen the nut.
• Release Angle is typically set to less than 10 degrees (1-to-3 degrees for HYTORC Washer, or 3-to-7
degrees for reaction arms) so that nut is not loosened.
• The automatic release feature is actuated by continuing to hold the trigger after the tool
successfully completes Torque operations (and Angle if set).
• During operation the screen will show the release angle and direction, the tool motor will reverse
by the desired release angle and then stall again to allow the tool to be removed from the nut.
• The Release Angle is applied following application of Torque (and Angle, if set) and after an
additional time delay set in the Angle Delay menu – typical ½ to 3 seconds.
(CONT’D.)
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