In spite of a diverse production program the copper/aluminium based heat exchanger forms the heart of our production. Technical equipment is adapted to this fact.

Important Capital Equipment:

• Fin press
• 4 press machines
• 12 line ,2 x 6 line, 1 x 1 line
• special jigs for fin press (mainly for coolers of power semiconductors, partly also the radiator program)

• Expanders
• 3 versions of expanding
• 2 x hydraulic - so called ball expander
• 1 x bar (mechanic ) expander  with 2 tubes
• 1 x horizontal expander with more tubes
• tube-cutters
• production of nipples
• NC cutting machine for sheets NC edging press
• NC sheet bender
• Universal automatic programmable drill
• Standard tool machines (millers, lathes, drills, saws etc.)
• Other special machines and jigs

Some of the technical principles

• Fin finishing area
• expanding with interference of min. 0,4 mm
• hydraulic expanding for water and steam heaters only
• mechanically expanded evaporators and condensers with the presence of evaporating oils compatible with compressor oils
• zinc-plated frames and frames made of stainless steel connected by resistance  spot welding, aluminium and copper frames are usually riveted
• longer, higher or heavier exchangers are reinforced by brackets

• final finishing – soldering
• Cu U-bends 5% Ag solder
• nipples Cu / Cu  15 % Ag solder
• nipples Fe / Cu  Ms solder
• steel headers are soldered by mercury arc or flame
• copper headers are soldered by 15 % Ag solder
• collector Caps:
• screwed, mount
• smooth ( evaporators, condensers)
• accessories: de-aerating and dewatering plugs, valves or schraider valves
  
• Pressure testing – individual under water test (100 % of production )
• heaters and coolers, dry air 10 – 31 bar
• evaporators, condenser, nitrogen 25 – 31 bar (filled a low pressure nitrogen)

• Surface treatment
• Steel headers and spot welds are treated with a protective paint (use of other surface treatments such as electrophoresis, powder coating, etc. are not available)