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In-N-Out Burger NGF 255 Installation Manual © 2011, IMI Cornelius Inc.- 5 -Publication Number: 621058476INS outlet to Ice/Drink Unit using 3/8-inch food-grade tubing. Disable the pump from operating by switching the switch in the carbonator pump assembly junction box to the OFF position. 6. Connect the beverage system product tubes as indicated in the Flow Diagram, Figure 4 This work should be done by a qualified service person. NOTE: See the Flow Diagram (Figure 4) or Decal on the lower front of the unit for the location of syrup and water connections. 7. Clean the hopper interior (see CLEANING INSTRUCTIONS in Owner’s Manual P/N 621058476OPR). 8. Connect the unit power cord to a 120 volt, 60 cycle, 3-wire grounded receptacle. For 220-240 Volt Interna- tional Units, a 3-wire power cord is provided. An adapter plug for the particular country will need to be pro- vided by the Installer. ADJUST CARBONATOR CO2 REGULATOR & TURN WATER INLET SUPPLY LINE ON CAUTION:! Before connecting the CO2 regulator assembly to a CO2 cylinder, turn the regulator adjusting screw to the left (counterclockwise) until all tension is relieved from the adjusting screw spring. 1. Open (counterclockwise) CO2 cylinder valve slightly to allow lines to slowly fill with gas, then open the valve fully to back-seat the valve. (Back-seating the valve prevents leakage around the valve shaft). 2. The carbonator CO2 regulator is fixed at a nominal 75 psi. 3. Open one of the post-mix dispensing valves to exhaust trapped air inside the carbonator tank. CAUTION:! Never operate the carbonator pump with the water inlet supply line shutoff valve closed. “Dry running” the water pump will burn out the pump. A pump damaged in this manner is not covered by warranty. 4. Open the water inlet supply line shutoff valve. UNIT OPERATION !WARNING: The unit must be electrically grounded to avoid possible fatal electrical shock or serious injury to the operator. The unit power cord is equipped with a three-prong plug. If a three-hole (grounded) electrical outlet is not available, use an approved method to ground the unit. Failure to ground the unit could result in serious Injury, Death or Damage to the Equipment. 1. Connect electrical power to the Unit. 2. Check for water and CO2 leaks and tighten any loose connections. 3. Enable the carbonator pump by turning the switch ON. The switch is located on the junction box of the car- bonator pump. The water pump will start and fill the carbonator tank with carbonated water. The water pump will stop when the carbonator tank is full. The carbonator pump will now cycle on whenever a drink is dis- pensed and the liquid level in the carbonator tank drops below the low level probe (approximately 22 oz). 4. Dispense a drink until the carbonator pump cycles on. The refill time should be about 5 - 7 seconds. 5. If the carbonator pump appears to be short-cycling where the refill time is 1 - 2 seconds, refer to the Trou- bleshooting section. NOTE: The dispenser is not designed for a wash down environment and must not be placed in an area where a water jet could be used. GATE RESTRICTOR PLATE AND ADJUSTMENT The rate at which ice is dispensed can be adjusted by varying the opening of the gate restrictor plate as illustrated in Figure 1. Reducing the dispense rate of ice is especially desirable when using glasses or other containers with small openings. To adjust the gate restrictor plate, loosen the (4) nuts that hold the ice chute assembly to the bin. The