How it works
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      Sapiens - Washing System

      WASHING SYSTEM

       

       

      The washing system is located under the chamber and is easily accessible from the front of the oven; there is a screw that fixes the system and allows it to be lowered and extracted from its position.

      On floor units the system stays behind the front panel.

      Nowadays is essential that ovens, for professional kitchens, have an automatic washing system both for labour costs and for safety/hygiene reasons

       

      A) & F) Detergent pump

      PD1 sucks the detergent from the tank and enters it into the distribution system

      PD1 is activated, by relay board O40 (S O27) to pump a predetermined amount of detergent.

      PD2 will work in parallel with PD1 and/or S7 for VCS

      The pump is activated, by relay board O44 (S O31), to spary on the fan

       

      B) Anti-return system

      A distribution system with anti-return valves which allows to connect the solenoid valve S7 and the PD1 cleaning pump to the storage tank which is a large section tube.

      The system prevents detergent and water from going into the water system and the detergent tank respectively

       

      C) Solenoid valve S7

      A washing solenoid valve S7 that injects water at the mains pressure into the distribution system.

      S7 is activated by relay board O41 (S O26)

       

      D) Tank

      The storage tank is nothing more than a large pipe where the detergent sucked by the PD detergent pump is accumulated.

      Once the necessary amount of detergent is collected, the S7 electrovalve is opened and the water pressure pushes the detergent into the chamber through the washing flange

       

      E) Washing Flange/Motor

      The washing flange allows to enter the detergent and water of the washing system into the cooking chamber by spraying all surfaces.

      The system consists of a flange fixed to the chamber, with an o-ring that allows you to seal the flange on the chamber, and a rotating shaft moved by the washing motor.

       

      E) Washing flange

      The water and detergent that come from the storage tank enter the flange and from this pass into b) the rotating shaft that is hollow, at the end of the rotating shaft is screwed the washing head that ends with a warhead that spreads the jet.

      The flange-rotating shaft system is held together by a seeger ring c) whose seat is on the rotating shaft. There are also two seals that guarantee flange sealing: a front o-ring d) and a radial rear seal e).

      E) Washing Motor

      The washing arm is moved by the washing engine which is fixed by a grain to the rotating shaft.

      The washing engine is powered together with the water electrovalve by the relay board O41 (S O26) same as S7.

      G) VCS injection pipe

      An injector that sprays detergent or water directly in the fan center to increase the effectiveness of washing.

      H & I) Floor unit Washing

      Floor units are equipped with a second rotating arm at the bottom of the cooking chamber. This arm is not used to enter detergent; it is only used for rinsing.

      To ensure adequate water flow, the lower washing arm is activated alternately to the upper one and is controlled by the relay board O43 (S O29).

       

      Washing control

      The washing system operates with liquid detergent contained in 5 or 10Kg tanks.

      Since they are external tanks, there is no way to verify the level of the product contained in them but, based on of the density and activation time, the system estimates the accumulated consumption and, when the theoretical level drops below 20%, at the start of the wash the system asks to verify the level of the tank.

      The washing system operates with liquid detergent contained in 10Kg tanks

       

      Start-up phase

      Washes, especially new ones that start with a steam soak phase, can start from a temperature of up to 130°C. If the temperature is higher, the system asks to cool down by opening the door.

      If the operator ignores the request or if the door is opened and immediately closes the system, after a second warning, attempts to cool the chamber by opening the Fastdry and injecting water into the fan.

       

      Vaporization phase

      This phase is not present in short washes such as Rinsing and Fast

      The system produces steam to soften the dirt and at the same time intermittent detergent on the fan while activating PD1 and PD2.

       

      Detergent spraying

      This phase enters detergent into the chamber first activating PD1 to accumulate the detergent and then activating the S7 washing solenoid valve and ML washing motor at the same time, to spray the detergent into the chamber.

      Normally this phase is carried out by rotating the fan clockwise and counterclockwise to improve the distribution of the chemical

       

      Detergent action

      At this stage the detergent is left to act possibly facilitating the action with the temperature

       

      Rinsing

      At this stage the chamber is rinsed by injecting water from the washing arm and the fan injector

       

      Drying

      At this stage the chamber is partially dried, to improve the action of the next detergent entry, or completely at the end of washing (not for short washes).

       

      Combination with Calout

      To optimize operating time, it is possible to carry out the longest washes at the same time with the Calout cycle for boiler maintenance.

      The washes that can be carried out in combination are: Medium Eco, Hard Eco and Grill