Until 1978
Use of high-capacity refrigerant R22 for truck body temperatures down to -40 °C, giving 100% higher refrigeration capacity in comparison with the conventional R12 refrigeration systems. Making possible the replacement of uneconomical cooling by nitrogen to the largest possible extent.
Evaporator completely outside the truck body of rigids as well as of drawbar and articulated trailers. Pallet loading the full length and height of the loading space.
Thanks to a hydraulic tilting system patented worldwide, the body height can be reduced by up to 300 mm.
Powerful cross-flow fans with only 100 mm discharge height for double-deck loading up to bulkhead with 2,700 mm internal loading height.
Air discharge rate up to 18 m/s for uniform air and temperature distribution over the total body length, also without roof air duct.
Environmentally friendly and economic alternator drive of the refrigeration machine replaces the unreliable diesel, petrol fuel or hydraulic drives.
Reduction of compressor and engine speeds from 2,200 – 2,800 to 1,400 – 1,800 rpm results in10 dB(A) lower noise emission; operating life more than doubled.
Corrosion-resistant, self-supporting, heat-insulated and soundproofed plastic casing with aluminium supporting frame replaces the conventional steel sheet casing.
1979
FRIGOBLOCK refrigeration capacities and forced air circulation permit double pallet loading of ice cream and frozen food even with 2,500 mm vehicle width.