Ice cream machine STAFF Ice system 1959 RHB15/60

The STAFF Ice system 1959 RHB15/60 is an electromechanical batch freezer designed for professional use. This combined, multi-purpose machine features two distinct and independent tanks, allowing for simultaneous operation. The upper tank is dedicated to thermal pasteurisation, while the lower tank functions as a horizontal freezer.

This type of batch freezer operates by first pasteurizing ingredients in the upper tank, heating them to a set temperature and then cooling them down. This process prepares the mix for freezing. The lower tank then takes the chilled mix and rapidly freezes it while agitating to create a smooth texture. Each tank is equipped with its own compressor and inverter for precise control over its specific function.

In a typical work cycle, the machine can produce up to 10 litres of ice cream. The combined hourly production capacity is 60 litres. The upper pasteurisation tank includes a stainless steel mixer with an agitator shaft and polyethylene (PET) scrapers, designed for mixing and scraping of the tank walls. It features a tank defrost switch and a direct drive system with lifetime-lubricated gearboxes. An inverter with an acceleration ramp manages the mixer's speed, which can be varied. Ingredients are added via a transparent cover with a double lid, and a flush-mounted faucet facilitates product dispensing.

The lower freezing tank shares similar construction, also featuring a stainless steel mixer, agitator shaft, and PET scrapers. It too has a defrost switch, a direct drive system with sealed gearboxes, and an inverter-controlled mixer with an acceleration ramp. A transparent cover with a double lid and a flush faucet are also present.

Operation is managed via an on-board computer offering 61 programmes. This includes one dedicated mixing programme and 40 free programmes for custom recipes and heat treatment up to 115 °C. Pasteurisation programmes allow heating to 85 °C or 65 °C, with programmable pause times and cooling to 4 °C, followed by a preservation phase at 4 °C. Operators can select continuous or variable mixer operation, and all pasteurisation and ripening cycles are saved. For freezing, there is one programme with time control and five programmes with temperature control for batch freezing, chilling, and preserving. Seven circuit programmes allow combinations of up to five different programmes. Operators have the flexibility to dynamically alter cycles in progress by adjusting mixer speed or product consistency, and can save new parameters. The machine features a multilingual display with visual, alphanumeric, or graphic signals, and temperature control is managed with PID. Integration between the inverter and electronics is complete, and acoustic and visual indicators alert the operator to any malfunctions.

This batch freezer has a capacity of 60 L/h. Its dimensions are 600 mm in length, 830 mm in width, and 1651 mm in height. The unit weighs 356 kg and operates on a 400 V electrical supply. It is compatible with equipment made by RHS and SMARTMIX RHS.

Cleaning is facilitated by the removable transfer channel and the design of the tanks and scrapers.