expander is setup, the holding blocks are tightened firmly by using pneumatic torque wrench.
Step 2 Back plate setup: The back plate is a part of the expander that supports the coils from behind during the expansion process. The plates are made up of aluminum with steel structure supporting it. The weight of each plate is around 50 lbs. The plates are lifted manually by two operators and mounted on vertical frame of the expander. The plates are then adjusted for its horizontal inclination. The process involves trial and error. Awrong alignment can cause quality problems. There is also a significant risk of safety hazard due to heavy weight of plates.
Step 3 Row setup: row setup is needed whenever setup is done for a coil which has different coil thickness (number of layers) with respect to the previous coil.