Operating Instructions and Parts Manual
JCU50
General Safety |
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| Air Volume |
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Information (Cont’d) |
| 22. Use wire of adequate size to mini- |
| Control |
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15.Make sure the line voltage and fre- |
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| mize voltage drop at the motor. |
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| quency of electrical current supply |
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| Do not handle |
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| agrees with the motor wiring. |
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| pump or pump |
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16. Do not attempt repairs to the elec- |
| motor with wet hands, when standing |
| Bladder |
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| on a wet or damp surface or when |
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| tric motor. All repairs to the motor |
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| standing in water. Fatal electrical |
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| must be completed at a licensed or |
| shock could occur. |
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| certified electrical motor repair |
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| Pump motor is |
| Conventional | Precharged |
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| shop. |
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| equipped with an |
| Tank | Tank |
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| Do not touch an |
| automatic resetting thermal protector and |
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| operating motor. |
| may restart unexpectedly. Protector trip- |
| Figure 2 - Conventional & Precharged |
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Modern motors are designed to operate at |
| ping is an indication of motor overloading |
| Storage Tanks |
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high temperatures. |
| because of operating pump at low heads |
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17. Avoid kinking electrical cord and |
| (low discharge restriction), excessively |
| opened. An air volume control auto- | ||||||||
| high or low voltage, inadequate wiring, |
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| protect electrical cord from sharp |
| incorrect motor connections or defective |
| matically replaces air lost or absorbed | |||||||
| objects, hot surfaces, oil and chemi- |
| motor or pump. |
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| into the water. The usable water, or | |||||||||
| cals. Replace or repair damaged or |
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| drawdown capacity, of the tank is | |||||
| worn cords immediately. |
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| approximately 1/6 of the tanks total | |||||||||
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18. Keep fingers and foreign objects |
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| volume when operated on a | |||||||||
| WATER SUPPLIES |
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| away from ventilation and other |
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| pressure setting (Figure 2). |
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| openings. Do not insert any objects |
| The water supplies illustrated in Figure |
| TANKS - PRECHARGED STORAGE | |||||||
| into the motor. |
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| 15 are possible sources for water. |
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| A precharged storage tank has a flexible | |||||||||
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| Risk of electric |
| These water supplies can be divided |
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| bladder or diaphragm that acts as a barrier | |||||||
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| shock! Never con- |
| into two categories: |
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| between the compressed air and water. | |||||||
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nect the green (or green and yellow) wire |
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| SURFACE WATER |
| This barrier prevents the air from being | |||||||||
to a live terminal! |
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19. To reduce the risk of electrical |
| Water from a lake, stream, pond and |
| absorbed into the water and allows the | ||||||||
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| water to be acted on by compressed air at | ||||||||||
| shock, the pump should be plugged |
| cistern. This water is usually not fit for |
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| initially higher than atmospheric pressures | |||||||||
| directly into a properly installed and |
| human consumption, but may be suit- |
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| (precharged). More usable water is provid- | |||||||||
| grounded |
| able for washing, irrigation or other |
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| ed than with a conventional type tank. | |||||||||
| receptacle, as shown in Figure 1. |
| household uses. |
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| Precharged tanks are specified in terms of | |||||||||
| The green (or green and yellow) |
| GROUND WATER |
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| a conventional tank. For example, a 20 gal- | |||||||||
| conductor in the cord is the ground- |
| Water found in the water bearing stra- |
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| lon precharged tank will have the same | |||||||||
| ing wire. The motor must be secure- |
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| tum at various levels beneath the earth. |
| usable water or drawdown capacity as a | ||||||||
| ly and adequately grounded for |
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| Of all the fresh water found on earth |
| 40 gallon conventional tank, but the tank | ||||||||
| protection against shock. |
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| only 3 percent is found on the surface |
| is smaller in size (Figure 2). |
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| and 97 percent is underground. |
| PRESSURE SWITCH |
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| TANKS - CONVENTIONAL STORAGE |
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| The pressure switch provides for auto- | ||||||
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| Grounded |
| The function of the tank is to store a |
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| matic operation. The pump starts when | ||||||||
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| quantity of water under pressure. |
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| Pin |
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| pressure drops to a | |||||||
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| When full, the tank contains approxi- |
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| pump stops when pressure reaches a | ||||||
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| mately 2/3 water and 1/3 compressed |
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| air. The compressed air forces the water |
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| Figure 1 | Grounded Outlet |
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| out of the tank when a faucet is |
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20.Where a
21.Use only
CHART 1 - JET PUMP/TANK ASSEMBLIES
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| Air Volume | |
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| Control | |
| Type | Required | |
Well X | Precharged | No | |
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PCA | Precharged | No | |
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12P & 30 P Horizontal | Conventional | Yes | |
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FX Horizontal | Precharged | No |
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