1, Heat shrink packaging machine has large power consumption, so the input power must be greater than the nominal power showing in the shrinking machine nameplate, otherwise it would be easy to burn down lines or electrical components. 

2, Must be reliable grounding, in order to protect the security of worker. 

3, When delivering, each machine is accompanied by a connecting power cable, the end part lead identification symbols, with the power supply must be properly connected, peccancy operation may result in electric shock. 

4, When assigned voltage of this machine is three-phase voltage 380 v, must enter zero at the same time, meeting the standard of three phase four wire system. Otherwise the machine doesn't work, and easy to burn internal electrical components. 

5, The machine must be installed horizontally, otherwise it will shorten the service life of electric heating tube. For mesh belt transmission machine, its tilt installation will lead to the conveyor belt off center. 

6, When machine is used more than three months in a row, it is necessary to check heat resistance wire of contraction chamber, replaced as appropriate according to the aging degree. 

7, When machine works, palm of the hand and other parts are not allowed to contact with machine running parts, especially the high temperature shrinkage of the ministry of interior, it is easy to burn. 

8, When packaging is over, should turn off the heating switch, keep conveyor motor and fan motor run 10 minutes, then cut off the power supply