Hofmann Preheaters:
"D" and "ID" Range
Vertical preheaters are heated directly (without heat transfer oil) or indirectly (with heat transfer oil) by gas- or oil burners (24V or 230V).
- Heated central column to increase the heating surface. Core of the material filling cannot rotate.
- Hydraulically top-driven agitator, agitator shaft mounted in central column.
- No seals exposed to material. Removal of agitator shaft possible, even if the preheater is filled and material is cold. Suitable for high level of torque.
- Optimum access to the inside.
- Comfortable cleaning by easy removal of entire top section .
Direct heating
This method of heating ensures the greatest melting capacity. However, the danger of local overheating in the melting pot requires you to monitor the heating closely for melting temperature, filling level and agitator operation.
Indirect heating
A heat transmission oil bath encloses the melting pot to ensure a uniform heat transmission and gentle heating without local overheating in the melting bath. Suitable for sensitive melting material and ideal if you wish to rely entirely on the temperature control System.
Technical data
Filling quantities (gross) / weight - weight of heat carrying oil included, generator weight excluded
- ID1100-1 (1 preheater): 1100 l / cca. 1900 kg
- ID1100-1 (2 preheaters): 2200 l / cca. 3400 kg
- ID810: 810 l / cca. 1190 kg
- ID600: 600 l / cca. 1015 kg
- ID100: 100 l / cca. 415 kg
Filling quantities (gross) / weight - weight of heat carrying oil and generator excluded
- D350: 350 l / cca. 445 kg
- D520: 520 l / cca. 640 kg
Weight:
- Generator 3,1 kW: cca. 115 kg
- Generator 10,0 kW: cca. 350 kg
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