Operating Instructions and Parts Manual | JCU50 |
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Pre-Installation (Cont’d)
PACKAGE SYSTEMS
There are four jet pump/tank assem- blies sold as packages (Chart 1).
WELLS
A new well should be pumped clear of sand before installing the pump. Sand will damage the pumping parts and seal. The drawdown level of the well should not exceed the maximum rated depth for the pump. The capacity of the pump will be reduced and a loss of prime may occur.
Installation
LOCATION
Select a location as close to the water supply as possible.
Be sure to comply with any state or local codes regarding the placement of the pump. The equipment must be pro- tected from the elements. A basement, frost proof pit or heated pump house are good locations. Make sure the pump has proper ventilation. The tem- perature surrounding the pump is not to exceed 100° F (40°C) or nuisance tripping of the motor overload may occur.
PIPING
Piping may be copper, steel, rigid PVC plastic or flexible polyethylene plastic.
Flexible pipe is not recommended on
suction pipe (inlet pipe).
The pipe must be clean and free of rust or scale. Use a pipe joint compound on the male threads of the metal pipe.
Teflon® tape should be used with plas- tic threads. All connections must be air tight to insure normal operation.
Slope all inlet piping upwards towards the pump to prevent trapping air. Unions or hose couplings can be installed near pump to facilitate
removal for servicing or storage. A rub- ber hose installed between the water system and the house piping will reduce the noise transmitted to the house.
Plastic pipe can be used on all installa- tions except 2” deep well jet. The 2” deep well jet requires 11/4” galvanized steel pipe and special machined cou- plings (113/16” O.D.).
The galvanized steel pipe and the cou- plings restrict the flow of return water back to the jet unless the couplings are machined.
PIPE SIZES
Long horizontal pipe runs and an abundance of fittings and couplers decrease water pressure due to friction loss. See Chart 2 to determine the prop- er pipe size.
SHALLOW WELL INSTALLATION
A shallow well jet assembly can be used with the deep well pump when the pump is located 25 feet vertically of the water level. Shallow well installations have only one pipe between the pump and water supply (Figure 3).
DRILLED WELL (FIGURE 15)
1.Install a foot valve on the first sec- tion of pipe (Figure 3, Illustration A).
2.Lower the pipe into the well.
3.Add pipe until the foot valve is 5 feet below the lowest anticipated water level.
The foot valve should be at least
18” from the bottom of the well or sand or sediment could be drawn into the system.
4.After proper depth is reached, install a well seal or pitless adapter to support pipe and prevent surface water and other contaminants from entering well.
To Pump
Well
Seal
Well
Casing
Foot
Valve
Illustration A
To Pump
Packer
Type
Foot
Valve
Drive
Point
Illustration B
To Pump
Incline
Check
Valve
CHART 2 - PIPE SIZING
|
|
| Horizontal Distance |
|
|
Pump | Pump |
| (Feet) |
|
|
Model | Opening |
| |||
Deep Well | Inlet: Suction | 11/4” | 11/2” | 2” | |
| Inlet: Drive | 1” | 11/4” | 11/2” |
|
| Outlet | 3/4” | 1” | 11/4” | |
Drive
Point 
Illustration C
Figure 3
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