Self Cleaning Hood System Installation, Operation, and Maintenance Manual RECEIVING AND INSPECTION Upon receiving unit, check for any interior and exterior damage, and if found, report it immediately to the carrier. Also check that all accessory items are accounted for and are damage free. WARNING!! Installation of this module should only be performed by a qualified professional who has read and understands these instructions and is familiar with proper safety precautions.
TABLE OF CONTENTS WARRANTY .................................................................................................................................................. 5 INSTALLATION ............................................................................................................................................. 6 Mechanical ................................................................................................................................................
WARRANTY This equipment is warranted to be free from defects in materials and workmanship, under normal use and service, for a period of 12 months from date of shipment. This warranty shall not apply if: 1. The equipment is not installed by a qualified installer per the MANUFACTURER’S installation instructions shipped with the product, 2. The equipment is not installed in accordance with federal, state and local codes and regulations, 3. The equipment is misused or neglected, 4.
INSTALLATION It is imperative that this unit is installed and operated with the designed airflow and electrical supply in accordance with this manual. If there are any questions about any items, please call the service department at 1-866-784-6900 for warranty and technical support issues.
Piping Loss Calculation for Wall Mount Self Cleaning System To ensure proper operation of the Self Cleaning System, a minimum operating water pressure rating, see Table 1, during spraying must be achieved at the hood nozzles. For this to occur, proper sizing of the water line is required. Use the following steps to calculate the piping minimum size. 1. Use the Minimum Pressure Requirements for Lengths of Hood chart and find the Self Cleaning minimum PSI required at the hood inlet.
Field Pipe Pressure Drop Calculation Example: Wall mount panel installed with 30 feet of ¾” linear pipe between panel and hood. (2) 90 degree elbows are installed in the pipe run and the pipe run has a vertical rise of 5 feet. Length of end-to-end hood system is 32 feet. Hood System = 32 feet. Flow rate = 32 feet * 0.
Minimum Operating Pressure Requirements for Lengths of Hood Minimum Inlet Water Minimum Inlet Water Length of Hood Pressure for Cold Pressure for Self (Ft) Mist (PSI) Cleaning (PSI) 0 10 30 4 10 30 8 10 30 12 10 30 16 15 30 20 15 31 24 15 32 28 15 34 32 20 37 36 20 39 40 20 42 44 20 46 48 20 50 Table 1 Note: Water pressure may not drop below the minimum required PSI while the hood hot water is operating. Pressure may not rise above 50 PSI when the hood is spraying.
Self Cleaning System Overview Figure 1 10
Self Cleaning Hood Top and Bottom View Figure 2 11
Drain Assembly Figure 3 12
Electrical Before connecting power to the control, read and understand the entire section of this document. As-built wiring diagrams are furnished with each control by the factory, and are attached either to the door of the unit or provided with the paperwork packet. Electrical wiring and connections should be done in accordance with local ordinances and the National Electric Code, ANSI/NFPA70.
OPERATION Prior to starting up or operating the system, check all fasteners for tightness. Ensure that the wiring is installed properly and that all nozzles and panels are installed. The Self Cleaning hood is designed to use hot water to wash the hood plenum and immediate duct section every time the fan switch button is pressed on the main control panel HMI.
10. Check all manifold pipe connections to ensure there are no water leaks. 11. Check all filters to make sure that no water is leaking back through the filters. 12. Verify that the hood grease trough is draining properly and there are no clogs in the drain.
Filter Installation Configuration The hood filters have drip blanks attached to them to prevent water leakage through the filters. The chart below shows the location of the drip blanks and the last filter to be installed into the hood. See Figure 5 below for details.
Start Up Checklists Self Cleaning Hood Start Up Checklist Action Completed (Yes/No) Check All Nozzles for Tightness Open all Valves to Hood Fill Surfactant Tank Prime Surfactant Pump Set All Timers Check Fan Operation Operate Wash Cycle Verify Surfactant Pump Operation Verify Operating Hot Water Pressure (Table 1) Verify Operating Cold Water Pressure (10-20 PSI) Verify Max Water Static Pressure (125 PSI) Verify Hot Water Temperature Check For Leaks in Manifold Check For Leaks through Filters Verify that W
Component Description The following section lists the major controls and components used in the Self Cleaning hood. Self Cleaning Spray Bar The Self Cleaning hood contains a spray bar that extends the entire length of the hood immediately behind the filters in the hood. The bar is ¾” brass fittings with nozzles that spray directly toward the back of the hood. The same spray bar is used in hot water wash and cold water mist. Water enters the spray bar via a ¾” quickseal.
Water Manifolds There are several versions of manifold configurations. The Self Cleaning with hot water wash (W1) has one hot water connection. The cold water mist (W2) has one cold water connection. The hot water wash with cold water mist (W3) has one hot water and one cold water connection.
Self Cleaning Manifold Details Figure 8 20
Self Cleaning 1. During the wash cycle, water will be sprayed in the plenum and duct and surfactant will be injected at a set frequency. The wash cycle will stop when the wash timer expires or when the Wash button is pressed again. 2. The wash timer is factory set to 3 minutes and is adjustable through the Configuration Menu. The surfactant is injected for 1 second at the start of each minute of Wash. This setting is not adjustable.
Surfactant Tank The surfactant tank contains a liquid level control which energizes when the tank is completely empty. In the event that the low level sensor is activated, an “Add Surfactant” light will illuminate on the control panel. To reset light, simply fill the surfactant tank with surfactant. Figure 9 below shows tank details. NOTE: SC-5 surfactant from 20/10 Products Incorporated must be used.
Troubleshooting The following table lists causes and corrective actions for possible problems with Self Cleaning hoods. Review this list prior to consulting manufacturer.
MAINTENANCE To guarantee trouble free operation of this system, the manufacturer suggests following these guidelines. Most problems associated with unit failures are directly related to poor service and maintenance. Record any maintenance or service performed on this equipment in the documentation section located at the end of this manual. General Maintenance 1. Hood filters must be maintained on a daily basis to ensure proper airflow and grease extraction. 2.
Start-Up and Maintenance Documentation START-UP AND MEASUREMENTS SHOULD BE PERFORMED AFTER THE SYSTEM HAS BEEN INSTALLED (Warranty will be void without completion of this form) Job Information Job Name Address City State Zip Phone Number Fax Number Contact Purchase Date Service Company Address City State Zip Phone Number Fax Number Contact Start-Up Date Self Cleaning Hood Information Refer to the start-up procedure in this manual to complete this section.
Maintenance Record Date Service Performed Factory Service Department Phone: 1-866-784-6900 Fax: 1-919-554-9374 27
