• Unloading − The operator deflates the door gasket via the HMI operator terminal − The operator opens the SaniCab PC door after the cleaning cycle has ended (cleaning cycle completion is indicated on the HMI) − An empty transfer cart is positioned in front of the SaniCab PC door and is pushed into the rail assembly inside the washer for engagement and locking − The process parts rack is pulled from the chamber onto the transfer cart − The operator disengages the transfer cart from the rail assembly, pulls the transfer cart away from the chamber, and closes the door − The transfer cart is pushed from the SaniCab PC system to the process area − Clean process parts are unloaded off the rack 8.3 Cleaning Cycle The following is an example of a typical SaniCab PC cleaning cycle with two (2) chemical wash steps – one caustic wash and one final sanitize step Water fill and drain steps are performed between each rinse or wash phase • Rinse • Caustic Wash • Rinse • Final Rinse with Sanitizer • Heated Drying (requires Dryer System : see Section 10.3 Dryer System) A typical cleaning cycle duration (without heated drying) is between 15 and 45 minutes The cleaning cycle time required is dependent on many user-defined variables unique to each application, including soil conditions, required number of wash and rinse phases, available utilities, recirculated heating selection, drying requirements, and more As standard, the final rinse water is not followed by a drain step to reduce water usage by reusing the water for the next cleaning cycle’s first rinse This water-saving step is not recommended for systems with a dryer or when there are concerns of cross-contamination (eg, allergens) between cleaning cycles When the optional Dryer System is selected, a heated drying phase typically adds an additional 10 and 30 minutes to the cleaning cycle duration The Exhaust Fan can provide an additional step to remove water vapor and humidity from the chamber after the final rinse All cleaning steps are set up as individual operation codes (Opcodes) enabling full customization of cleaning cycles 8.4 System Automation Sani-Matic provides all programming of the HMI and PLC, enabling automation of the provided system For additional custom system automation (eg, Custom HMI Screens, Additional Security Levels, External System Communications), see the System Automation options • Cleaning sequences will be automatically controlled using wash cycle recipes • Up to (40) different recipes can be stored in the PLC • Each recipe has its own setpoint values (eg, time, temperature, conductivity) which are adjustable • Up to (96) individual steps per recipe • Each step in the recipe is composed of Operation Codes (Opcodes) which define the phase of the wash cycle (eg, caustic wash, final rinse) Opcodes can be arranged, omitted, or duplicated within the recipe as needed • Up to (96) unique Opcodes • Measured process variables have alarms with adjustable high/low setpoint values • Up to (96) different setpoint values (eg, time, temperature, conductivity) • The operator will have the ability to initiate, monitor and edit (with correct security level) the wash cycle, recipes, and setpoint values via the HMI • (3) HMI security levels are included • HMI User security is setup for local users If desired, Active Directory User Authentication can be setup by the facility in which the system is installed 8.5 Automation Interfaces The standard system reserves two (2) digital output signals for water fill, as well as three (3) digital output signals for chemical addition These signals are used to activate external equipment (eg, water fill valve, solenoid for the chemical pump) for water fill and chemical addition cycle steps The control system monitors and alarms these incoming utilities as required Additional I/O signals may be available (depending on selected options) to allow for an additional interface that may be unique to the individual application of the system (see Section 12.2.6 System Automation for additional information)
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