Oil Temperature Control Units


This 48 kW heating and cooling unit is for temperatures from 80°C up to 300°C. It is designed for use with rollers, plates, double walled vessels and other heavy duty use.

  • Digital flow indication with control of the minimum flow - switchable l/min, Imperial gal/min, US gal/min
  • Self-optimizing temperature controller unit with digital
  • display of the set and actual temperature. With high precision regulation in 1/10° range
  • Can be adjusted to indicate °C or °F
  • Automatic temperature control - difference between set and actual temperature activates an alarm
  • Large expansion tank, with 60 l expansion volume
  • Lime scale free heat exchanger made of stainless steel
  • Low loaded heating elements – no oil cracking

    Operating principle
    Closed hot oil circuit with cold oil receiver in a large expansion tank. Oil cracking is impossible. Long life expectancy of the oil, due to low watt density heating elements and a high flow rate. A drip pan under the expansion tank prevents the unit from getting dirty if it is filled incorrectly. This model is designed for highest temperatures and optimum safety.


Temperature range: from 80°C to 300°C with Marlotherm SH up to 300°C, with thermal oil up to 250°C.

Heating capacity:  48 kW, switchable in stages 16/16/16 kW. Automatic shut down of the heating capacity which is not required. Version with 24 kW heating capacity also possible.

Temperature control: Self-optimizing, electronic microprocessor controller with digital
display of the set and actual values and the oil flow.

Flow control: Electronic with digital display

Cooling capacity: Max. 480 kW

Cooling water use: 110 l/min (minimum 40 l/min, but strong reduction of cooling capacity)

Pump capacity: Max. 4 bar / Max. 260 l/min  Motor 4 kW

Filling amount: 70 litres

Expansion tank: Installed in the unit, content 100 litres. Expansion and return volume approx. 70 litres.

Oil circuit: Flange connection DN 32 flange-outside ø 140 mm, with 4 holes ø 18 mm on a screw hole circle of 100 mm, recommended sealing: 80 x 42 x 2 mm
Cooling water circuit: 1½” male thread

Dimensions: Length: 1'710 mm

Width: 790 mm

Height: 1'540 mm

Colour: Silver grey RAL 7001

Weight: 520 kg (filled approx. 600 kg)

Safety Devices
  • Automatic level control for dry run protection
  • Separate mechanical safety thermostat and electronic temperature limiter installed in the controller
  • Main switch, automatic cutouts, transformer and motor protection switch
  • Horn alarm in case of unit failure
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