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9 Copyright: Chart Industries, Inc., Jan. 2003 Facts To Know 1. A vessel’s normal internal operating pressure (41) is between 125 psi and 150 psi. 2. Vessel pressure can be as high as 300 psi after a delivery, but returns to its normal operating pressure after a day or two of normal CO2 use. 3. The gas supply pressure (44) is normally between 90 psi and 120 psi. 4. Frost or condensation on the vessel is normal during periods of CO2 use. 5.Frost or condensation on the vessel before starting the daily use of CO2 is a sign of a CO2 leak. Have the leak fi xed. 6.A Carbo-Max 750 HF holds about 750 lbs of CO2 to meet use demands of 50 - 300 lbs of CO2 per week. 7.The contents gauge (22) displays the approximate amount of liquid CO2 in the vessel. 8.CO2 becomes dry ice below a pressure of 61 psi. Stop using CO2 from the vessel if its pressure (41) reaches 70 psi or less. 9. An isolation (shut-off) valve is open when its handle is parallel to the valve body and the line. The valve is closed when its handle is perpendicular to the valve body and the line. 10. Every day before starting operations and CO2use check for: CO2 leaks (See “Safety”.) Pressure readings (41 and 44) CO2 contents (22) Abnormal frost or condensation Anything unusual. General Operating Instructions Always use caution when working with CO2. Read and understand the “Safety” section of this manual. The Carbo-Max 750 system does not require adjustment under normal operating conditions. Check the vessel daily before using CO 2. See ‘fact to know’ number 10. In an emergency the fl ow of CO2 from or through the Carbo-Max 750 can be stopped by closing the following valves: Valve 33c to stop the fl ow of gas from the vessel to the beverage system or other use-point. Valve 30 to stop CO2 fl ow or leakage through the fi ll hose and/or the brass fi ll fi tting in the outdoor fi ll box. Valve 33a to stop CO2 fl ow through the Economizer circuit. Closing valve 33c will also stop CO2 fl ow through the Economizer circuit but will also stop the fl ow of CO2 gas to the end use point. Valve 34 controls the fl ow of liquid CO2. Be sure valve 34 is closed while removing plug 35 for liquid CO2 service. For CO2 equipment issues, call your CO2supplier or service specialist. Before calling for service or trouble shooting assistance, please have the following information at hand: Serial number of the vessel Description of the problem Readings from: the vessel contents gauge (22), the vessel pressure gauge (41) and the fi nal line pressure gauge (44). Observations such as unusual frosting and/ or events related to the problem. V Operation and Troubleshooting