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