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In-N-Out Burger NGF 255 Installation Manual © 2011, IMI Cornelius Inc.- 13 -Publication Number: 621058476INS Contact your local syrup or beverage equipment distributor for additional information and troubleshooting of beverage system. Water valve will not open Check electrical connection to water valve. Check resistance of coil (should be 9 ohms). Check for voltage at coil when brand button is depressed. Unit will not dispense car- bonated drinks. Spurts CO2 and syrup only. Carbonator tank is empty, because tank was emptied while power was applied to unit. 5 min- ute time-out of carbonator pump/motor occurred, and carbonator pump is locked off. Unplug the unit and reconnect the unit. Main control board will reset, ice agitation will occur, and carbonator tank will refill to normal level. Note that this can occur while the water filter sys- tem is serviced or water supply is shutoff. If drinks are drawn from the dispenser while water pressure is shutoff, the carbonator pump starts and runs continuously, then shuts off on the 5 minute timeout. 1) low water pressure switch deactivates carbon- ator pump, 2) after 5 minutes reset and retry car- bonator pump. If water supply is restored, the 5 minute timeout will not occur. Repeat reset a sec- ond time, but on a third time, then lockout carbon- ator pump, which will generate a service call. Carbonated drinks are flat (low on carbonation)CO2 is out Replace CO2 Carbonator tank is 100% filled because the city water pressure exceeds the carbonator tank CO2 pressure regulator setting. CO2 setting for the carbonator tank is 75 psig, max water pressure is 60 psig. If necessary, install a water pressure regulating valve. Low water pressure Could be caused by excessively long runs (over 40 ft.) of 3/8” water supply line.Increase line size to 1/2” Low water pressure Add water pressure booster pump Plugged water filter.Change water filter Water booster bladder has burst Replace water booster tank/bladder No Syrup or Watered down drink dispensed Syrup supply is empty Replace BIB BIB pump not working Replace BIB pump No CO2 or compressed air supply to BIB pump, or not enough pressure Check CO2 pressure regulator setting. 65 psig recommended. Replace CO2 tank or fix com- pressor. Carbonator Troubleshooting Symptom Cause Remedy Carbonator pump does not start to fill tank Power cord for the carbonator pump motor is not connected. Carbonator pump is powered off the main con- trol board inside the electrical box of the unit. Check that the umbilical cord is connected from the unit to the pump motor terminal box. Power cord is connected but carbonator pump does not run. Carbonator pump motor is disabled. Check the enable/disable switch on the carbon- ator pump terminal box and enable it, if neces- sary. Probes were dry, unit was powered up, water was not turned on, and carbonator did not fill. This results in a 5 minute timeout. Unplugging the unit and plugging it in will reset the unit and start the carbonator pump. Water service was interrupted for more than 5 minutes. Unplugging the unit and plugging it in will reset the unit and start the carbonator pump. Carbonator pump is shor t cycling with every drink drawn Lower liquid level probe reads “dry” while upper probe reads “wet” Check color of leads going to probes. Black should go to bottom probe and white to top probe. Reverse if incorrect. Carbonator tank overfills, overflows through relief valve, and pump shuts off after 5 minutes. A. Poor electrical connections between carbon- ator tank and main control board A. Check connections at carbonator tank and at connector J4 on the main control board. B. Broken wires between carbonator tank and main control board B. Replace wire harness C. Defective liquid level probes C. Replace both liquid level probes