Open the package and control by hand after ruptures or damages on the sheath of the cable. Report immediately if any damages been discovered and keep the package (Reclamation to the transport business).
Never connect the heating cable to the supply voltage when it is coiled or on drum.
Control after installation the insulation resistance with a 500VDC megger in order to ensure that the cables have not been damaged during transport and handling. Warning: cables with an insulation resistance smaller than 10 megaohms insulation resistance can be defect (contact your supplier!).
The heating cables shall be stored in their package or on drums in a dry environment until the installation. The heating cables should be kept in surfaces with temperatures over 0°C, at least 2-3 days before installation in order to prevent damages on the insulation material at installation.