How should a spring type tubing bender be positioned on the tubing?

The correct positioning of a spring type tubing bender on the tubing is essential for achieving proper bends without damaging the tubing. Placing the spring on both the inside and outside of the tube provides support against kinking or collapsing while the bend is being made. This dual support allows for a smoother curve and reduces the risk of deformation in the tubing material, which can lead to leaks or structural failures later on.

Using the spring only on the outside could cause the tubing to crimp or kink on the inside, leading to potential issues with flow and refrigerant efficiency. Likewise, positioning the spring solely on the inside would not adequately support the outer section of the tube, resulting in similar risks of damage. Positioning the spring at any angle would not provide the necessary uniform support needed for effective bending, which is critical in refrigeration applications to maintain the integrity of the tubing.