For long term operation to prove that the micro-computer can protect 3 motors installed which run smoothly.

1. The dipped points are prefect after dipping, no indented point will be seen, because the points of the needles are smaller than 0.1 mm.
2. When putting the P.C.B. on the needle- platform, both components and needles will shake. Therefore, the needles will not push up the components.
3. The melting solder will control the deepness of P.C.B. when dipping P.C.B., it is the principle of liquid-floating, the special tools may solve the floating unbalance problem.
4. Rectangle shape of P.C.B. when dipping, because heat expansion will cause the P.C.B. right and left side to go up, the result is the border of P.C.B. (About 1 cm. of right and left side) will not dip completely. To solve the problem -- Let the P.C.B. preheating on the needle platform for a while before dipping. Or after dipping when needle - platform leave the P.C.B. use yours hands to press the P.C.B.on the right side and then on the left side, both for about 2 seconds to complete the dipping.
5. After putting the P.C.B. on the needle-platform it can readjust the position of components to dip.
6. If P.C.B. with too much flux then the components on P.C.B. might be moved cause of heat expansion. To avoid the heat expansion just change fluxing by spray or preheat the P.C.B. for a while on needle-platform before dip.
7. Special size of soldering bath require : The length of bath 50 cm. unchangeable, but, width of bath could be changed. (The extra cost depend on the size). The standard size of bath is 50 cm. (length) x 34 cm. (width).