18
•
Pre-Installation Verification –
A verification procedure is completed at the
site according to requirements (or code) to confirm suitability of the fastener
system for turn-of-the nut method. All components should be verified to
ensure there is adequate power to easily complete the required turn. Contact
the engineer of record for exact procedure required at the site.
•
Run Down Nut
– The nut is run down on the stud/bolt until positioned tight
against the flange. Set the speed control to “Rundown” and position the tool
on the nut. Pull the trigger to quickly run down the nut against the flange.
•
Snug Nut
– Switch the tool to Snug and apply necessary torque required to
bring the bolting surfaces into firm contact and alignment. All nuts should be
snug tight to the point where they cannot be loosened by hand.
•
Match Marking
- The angle is optionally “matched marked” on the application
to provide a means of inspecting the angle after tightening. Consult local
inspection guidelines for the exact match marking required. Since the tool
provides a documented data file with verification of the angle turned the
electronic data file may sometimes be allowed in place of match marking.
Check with the engineer of record to determine if match marking is required.
•
Position Back Wrench
- If needed, apply a back wrench to the back nut on
the bolt to prevent the back nut from turning during tightening. If using the
HYTORC Back Washer a back wrench is unnecessary.
•
Position Drive/Socket
- Place socket over nut until firmly engaged. If using
the HYTORC Washer or HYTORC Nut, make sure the driver properly engages
the fastener.
•
Position Reaction Arm
- Make sure the reaction arm, if used, is firmly
abutted against a stationary object (e.g. an adjacent nut, flange, equipment
housing etc.)
SETUP FOR TURN ANGLE
(CONT ’ D.)
(CONT ’ D.)
