Directions 

1. Only the best possible carrying away of heat assures the long life of cartridge heating elements.
2. For higher surface loads (from 5 to 20 W/cm²) the boring should be carried out according to H7 tolerance
3. For the highest surface loads (more than 20 W/cm²) individual fitting of the heating elements in the holes is recommended in order to achieve the lowest possible maximal clearance.
4. To achieve the highest quality of the hole's surface and the highest precision of the hole's diameter we recommend using of reamers for finishing of the holes
5. To achieve better results of cartridge heating element it is recommended to fit the heating element in the bipartite form with parting line running through axis of the hole. Clamping of the both parts makes intimate contact of the hole's surface with the sheath of the heating element.
6. In order to simplify assembly and disassembly, through-borings should preferably be used.
7. When combining several cartridge heating elements, the distance between two cartridge heating elements must be at least as long as the biggest cartridge heating element's diameter.
8. After longer break in the operation of the cartridge heating element it is recommended to come gradually to the full rated power - i.e. soft start of operation.
9. Protect the insulator and electric terminals area from liquid and paste-like substances, otherwise a short circuit may occur. The electric terminals should be also protected from vibrations, mechanical damages and contamination.
10. For long-term storage of cartridge heating elements it is recommended to keep them dry and at room temperature.
11. Dry damp heating elements in the temperature of 100 - 150°C during min. 8 hours.
12. Use the sliding mounting paste to assembly the cartridge heating element. The paste should be spread either on the heating element or in the hole before assembling. We offer paste based on copper and other metals. The paste is heat conducting and simplify assembly and disassembly of the heating element.