MASTER CONTROL UNIT - MCU The Master Control Unit - MCU is divided into a few functioning sets:PUMP ENGAGEMENT (PTO), PROGRAMMABLE and ILLUMINATED KEYS, INFO DISPLAY AND WARNING LIGHTS, RPM MANAGING SET, WATER AND FOAM TANK LEVEL GAUGE and DIGITAL PRESSURE INDICATORS. The MCU has available 14 factory-programmable keys that can act as switches or push buttons. Keys can be assigned different color-coded symbols such as pictograms or colors. The MCU can power up to 29 digital outputs (MOSFET), which are individually protected by a thermal reversible fuse (0,7 A) and 4 relay outputs (1 A). There are also available eight conditional inputs, protected with optocouplers which may be connected to the positive or negative voltage. The Pressure Governor allows automated regulation of the engine RPMs according to the pressure fluctuations in the pump, which ensures a constant water flow at the nozzle regardless of the number of connected users. The automatic pressure regulation is turned ON by turning the rotation switch - encoder. This will cause the pressure to increase to 4 bars. The pressure can subseguently be adjusted to the desired value using the encoder in 1 bar increments. If the manual keys for manual control of the RPMs (pressure) are used while the automatic regulation is running, the automatic regulation will be turned off. The pressure can then be increased and decreased manually or set to automatic again by turning the encoder. MCU DIMENSIONS (back side) CONNECTION CABLE TANK LEVEL CABLE IN THE PROTECTION TUBE • DIGITAL MOSFET OUTPUTS, ■ DIGITAL INPUTS FOR ALERTS AND USER DEFINED SIGNALS. • REMOTE INDICATORS, •LARGE USHT DRIVER, PRESSURE SENSOR DIMENSION INDUCTIVE PROXIMITY SENSOR DIMENSION

MASTER CONTROL UNIT-MCU WIRING DIAGRAM - GENERAL INDUCTIVE PROXIMITY SENSOR - PUMP RPM PRESSURE SENSOR - TANK LEVEL GAUGE-WATER PRESSURE SENSOR - TANK LEVEL GAUGE-FOAM TEMPERATURE SENSOR

MASTER CONTROL UNIT - MCU SPECIFICATIONS AND ORDERING INFORMATION SPECIFICATIONS Power supply Power consumption Relay output 1 Relay output 2 Digital outputs Keys Measuring range - low pressure gauge Measuring range - high pressure gauge Measuring range - vacuum gauge Pressure sensor range - low pressure Pressure sensor range - high pressure Pressure sensor range - vacuum Transducer electrical connection Transducer pressure port fitting Transducer housing Pressure regulation range /accuracy Displays Wiring protection Enclosure protection (IEC 529) Operating temperature Dimension of the MCU MCU...