8.2Operating checks
•If the pump does not generate the required discharge head rapidly, facilitate priming by stopping the pump and adding liquid.
•Check that the absorption of the motor does not exceed the value specified on the plate.
•The pump must always work smoothly and without vibrations.
•Do not operate without liquid and in any case avoid prolonged operation with the discharge gate valve closed.
• With series AS pumps never close discharge side completely.
• Mechanical seal: check that there is no leakage along the shaft.
8.3Extended stop
When stopping the pump for a longer time, empty the pump completely and wash it accurately in order to avoid the formation of scales and/or encrustations. When starting the pump again, please follow the above mentioned instructions.
8.4Cleaning the pump
The pump does not require any special washing procedures. The washing cycles normally used for the plant in which it is installed are quite satisfactory. When using the pump for liquids that tend to harden or crystallize, always make sure it is washed before periods when the machine is to be taken out of operation. This will ensure durability of the seal and of the pump itself.
It is the user’s responsibility to ensure that the washing liquids are compatible with the process liquid and the pump.
9.0 | Spare parts |
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| 2 |
| 3 |
| 4 |
| 5 |
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| Mechanical seal | 1 |
| 2 |
| 3 |
| 4 |
| 4 |
| Pump bearing | 1 |
| 1 |
| 1 |
| 2 |
| 2 |
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| 2 |
| 3 |
| 5 |
| 6 |
| 7 | |
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| 2 |
| 3 |
| 5 |
| 6 |
| 7 | |
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| Recommended spare part for two years of operation according to the |
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| number of pumps installed – vdma standard |
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Johnson Pump declines all responsibility for damage or injury resulting from the use of
8 |
