TROUBLESHOOTING
SYMPTOM | POSSIBLE CAUSES | REMEDIES |
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Low operating pressure | Insufficient electrical power | Check the fuses or circuit |
(continued) |
| breakers; measure the voltage. |
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| Pump not operating correctly | See Tonkaflo pump instruc- |
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| tions. |
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Low permeate flow rate | Low operating pressure | See possible causes for low |
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| pressure. |
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| Dirty or fouled membrane | Flush and clean the |
| elements | membrane elements. |
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| Operating on cold water less | Install a hot/cold feed water |
| than 13°C (55°F) | tempering valve if more per- |
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| meate flow is needed. |
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| Operate with a feed water |
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| temperature of 22° - 25°C |
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| (72° |
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| Membrane elements installed | Install membrane elements in |
| backward or damaged concen- | the direction of fluid flow. |
| trate seal | Flush and clean the machine |
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| immediately. Membrane ele- |
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| ments with damaged seals |
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| should be cleaned and may be |
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| returned for repair. |
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| Flow meter inaccurate | Check the flow rate manually |
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| with a stopwatch and calibrat- |
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| ed container. |
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26
