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In-N-Out Burger NGF 255 Operators Manual <br />© 2011, IMI Cornelius Inc.- 7 -Publication Number: 621058746INS <br />Replenishing CO2 Supply (As Required) <br />NOTE: When indicator on the 1800-psi gage is in the shaded (“change CO2 cylinder”) portion of the <br />dial, CO2 cylinder is almost empty and should be changed. <br />!DANGER: <br />CO2 displaces oxygen. Strict attention MUST be observed in the prevention of CO2 gas leaks in the entire CO2 and <br />soft drink system. If a CO2 gas leak is suspected, particularly in a small area, IMMEDIATELY ventilate the <br />contaminated area before attempting to repair the leak. Personnel exposed to high concentrations of CO2 gas <br />experience tremors which are followed rapidly by loss of consciousness and DEATH. <br />1. Fully close (clockwise) the CO2 cylinder valve. <br />2. Slowly loosen the CO2 regulator assembly coupling nut allowing CO2 pressure to escape, then remove the <br />regulator assembly from the empty CO2 cylinder. <br />3. Unfasten safety chain and remove the empty CO2 cylinder. <br />!WARNING: <br />To avoid personnel injury and/or property damage, always secure the CO2 cylinder with a safety chain to prevent it <br />from falling over. Should the valve become accidently damaged or broken off, a CO2 regulator can cause serious <br />personnel injury or death could occur. <br />4. Position the full CO2 cylinder and secure with a safety chain. <br />5.Make sure gasket is in place inside the CO2 regulator assembly coupling nut, then install the regulator assem- <br />bly on the CO2 cylinder. <br />6. Open (counterclockwise) the CO2 cylinder valve slightly to allow the lines to slowly fill with gas, then open the <br />valve fully to back-seat the valve (back-seating the valve prevents gas leakage around the valve shaft). <br />7. Check CO2 connections for leaks. Tighten any loose connections.