Tubular cartridge heaters

General Information

Coil cartridge heaters are groundless, high-compression heating elements that allow for a very high output while requiring relatively little space. Due to the good shaping possibilities, they are especially well suited for heating injection molding nozzles and hot runners used in the plastics industry. Other areas of application include laboratories and general machine construction. Other possible uses must be clarified with the manufacturer.

Operating Conditions and Safety Instructions

Coil cartridge heaters may be produced either with or without built-in Fe-CuNi thermocouple as in accordance with DIN 43710. If requested, a NiCr-Ni thermocouple can also be produced. As a rule, coil cartridge heaters are delivered in straight shape but can be bent. Nonetheless, we recommend bending and coiling to be performed by the manufacturer in accordance with the manufacturer's drawing.

It is necessary to make sure that the relevant fire safety instructions are observed and the appropriate safety precautions have been taken during installation. Both the heater and the material to be heated may not be subjected to any critical conditions (such as fire, explosion, formation of smoke and gas, etc.). It is also necessary to ensure that sufficient protection is provided against contact, dust and moisture.

Nonconforming installation and incorrect selection of control equipment may result in defects and accidents. Any other conditions of use or diverting from the intended use must be clarified with the manufacturer who must give his express approval. Otherwise the warranty is void and no liability will be assumed.

Installation Instructions

When heating tubular bodies, the coil cartridge heaters are normally wrapped with 2 to 4 closely wound coils with a pitch of 8 to 10mm. This helps to prevent a thermal overloading and to attain a uniform workpiece temperature. In general, the inner diameter of the coil should be about 0.2mm smaller to prevent an air gap after installation. Once parts have been bent, they may not be bent back.

Electrical Installation

The heater may only be installed by an authorized electrician or qualified personnel who have had proper instruction.

Make sure that the indicated operating voltage matches the supply voltage. Heat-resistant cabling must be used for all connections (see Operating Conditions and Safety Instructions). Cables must be installed in such a way that they do not come in contact with sharp-edged metal parts or hot surfaces.

VDE Specifications

The product was manufactured according to the following standards to the extent in which they may be applicable:

   DIN-EN 60335-1

   VDE 0700 Part 1

Comment: The user must ensure that electrical connections are protected to prevent accidental contact.

The production of these tubular cartridge heaters is certified according to the
DIN-EN ISO 9001:2008 via TÜV Thuringia

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