Frequent Pump Seal Failures - EcoWater CHC Series Service And Troubleshooting Manual

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5.4

Frequent Pump Seal Failures-

If the pump seal continues to fail frequently (once every 3-4 months or more frequently) check

the following:

1. Is the pump operating at it original design pressures and flows? Verify that the pump

is not operating above or below its specified pressure. Adjust the pressures using the

filter discharge valve or sweeper jets to maintain the appropriate pressures.

2. Is the pump cavitating. If you see air bubbles moving past the flow meter

continuously, this indicates that there is an air leak on the suction side of the pump.

This air can cause the seal to prematurely fail. Find the air leak and fix and replace

the defective parts.

3. If the debris within the water is too great, it can damage the seal more frequently,

EcoWater CHC recommends the use of a Hard faced seal in these type debris

conditions.

4. Running the CHCsystems without water. If water did not flow to the pumps due to

the towers being dry or the customer not opening a valve after cleaning the basket,

these actions can cause the pump seal to fail. Replace the seal.

5. Bearing failure on the pump motor, if there is excessive noise coming from the pump

motor during operation, this can cause the movement in the shaft and can cause the

seal to fail, if there is excessive noise, replace the pump.

6. Impeller blocked or clogged with some type of debris. This can cause an impeller

imbalance and will cause the seal to fail. Remove any debris from the impeller and

replace the seal.

7. Extended period of Off time with water on seal. It is important if the pump will not be

used for extended periods of time > 4 weeks that the pump be started from time to

time to allow the seal to clean itself and to move the stagnant water out of the pump. If

there is no water in the system, drain the pump during storage.

8. If the Motor shaft is bent or the impeller is damaged, this can cause a vibration in the

wet end that can damage the seal. Replace the impeller or the entire pump if needed.

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