DD40
SERVICE DIAGNOSIS
Symptom
..........Probable Cause
.....................Remedy
Water to syrup ratio too low or too high
..........1. Dispensing valve syrup flow regulator not properly adjusted.
.....................1. Adjust Water to Syrup ratio.
..........2. CO2 gas pressure to syrup tanks insufficient to push syrup out of the tank
.....................2. Adjust syrup tanks secondary CO2 regulator as instructed.
Adjustment of dispensing valve syrup flow regulator does not increase to desired
water to syrup ratio.
..........1. No syrup supply
.....................1. Replenish syrup supply as needed.
..........2. Syrup tank quick disconnects not secure
.....................2. Secure quick disconnects
..........3.Syrup tanks secondary CO2 regulator out of adjustment
.....................3.Adjust syrup tanks secondary CO2 regulator.
..........4.Dispensing valve, syrup tank quick disconnect, or syrup line restricted.
.....................4.Sanitize syrup system as instructed.
Dispensed product carbonation too low.
..........1. Carbonator primary CO2 regulator out of adjustment for existing water conditions or
..........temperature.
.....................1. Adjust carbonator primary CO2 regulator
..........2. Air in carbonator tank
.....................2. Vent air out of carbonator tank through relief valve. Actuate dispensing valve
.....................carbonated water lever to make carbonator pump cycle on.
..........3. Water, oil, or dirt in the CO2 supply.
.....................3. Remove contaminated CO2. Clean CO2 system (lines, regulators, etc.) using a
..................... mild detergent. Install a clean CO2 supply.
Dispensed product produces foam as it leaves dispensing valve.
..........1. No ice in ice bank.
.....................1. Check if overusing, if not, refrigeration system may have a dirty condenser. If the
.....................condenser is clean, and the agitator motor is running, the refrigeration system
.....................may need service.
..........2. Carbonator CO2 regulator pressure too high for existing water conditions or temperature.
.....................2. Reduce carbonator CO2 regulator pressure setting.
..........3. Syrup over carbonated with CO2 as indicated by bubbles in inlet syrup lines leading
.......... to the unit.
.....................3. Remove syrup tanks quick disconnects. Relieve tank CO2 pressure, shake tank
..................... vigorously, then relieve tank CO2 pressure as many times as necessary to remove
..................... over carbonation.
..........4. Dispensing valve restricted or dirty.
.....................4. Sanitize syrup system as instructed.
..........5. Dirty water supply.
.....................5. Check water filter. Replace cartridge. NOTE: If the water supply is dirty, be sure
.....................to flush lines & carbonator completely. If needed, remove lines to carbonator tank,
.....................invert tank and flush tank and all inlet lines to remove any foreign particles or dirt.
February, 1988
Page 11
