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SYMPTOM POSSIBLE CAUSE
NOTE: If symptom(s) persist after possible causes have been checked, contact
Hobart Service.
Spotting of Ware. 1. Ware not loaded properly.
2. Incorrect final rinse water temperature (minimum 180°F) or inadequate water
pressure (15 to 25 psi is recommended).
3. Incorrect rinse aid dispensing. Contact your chemical representative.
4. Improper water hardness (3 grains or less per gallon is recommended).
5. Incorrect detergent for water type.
6. Clogged rinse nozzle(s).
7. Misaligned rinse arms. Rinse arms should be positioned so that they align in
hub on chamber wall.
Inadequate Rinse. 1. Dirty line strainers causing reduced water flow. Turn off water supply, remove
strainer cap, withdraw and clean screens.
2. Low supply line pressure.
3. Rinse Arm(s) are not properly inserted in the hubs.
4. Clogged Dual Rinse Nozzle(s) on FT900D or FT900SD — clean the Nozzle(s).
5. Dual Rinse Tank Strainer Pan is clogged on FT900D or FT900SD — clean
the Strainer Pan.
Continuous Rinse 1. Photoelectric sensors are blocked. Clean sensor openings (Fig. 40).
Operation 2. Remove side panels from load end of machine adjacent to prewash chamber.
With machine power on, verify indicators on sensor (Fig. 41) flash on and off
when blocking and unblocking the sensor.
3. Improperly operating rinse solenoid valve. Contact Hobart Service.
4. Problems with conveyor motor drive. Put machine in Standby (by pressing the
Power key) for at least 60 seconds to allow drive and motor to fully discharge and
reset. Turn machine back on. If problem persists, contact Hobart Service.
Fig. 40 Fig. 41
ELECTRONIC SENSOR
AT LOAD END
CLEAN SENSOR OPENINGS
AT LOAD END OF MACHINE