Sears 390.2508 owner manual Pipinginstallation, Discharge Pipe Sizes

PIPINGINSTALLATION

CasedOpen

WellWater

Foot

Valve

Strainer

Screen

18360695

Figure 3

Horizontal Piping From well To Pump

When the pump is offset more than 25 feet from the well,

horizontal piping should be increased in size to reduce fric- tion losses. In no case should the offset piping be smaller

than the suction tapping of the pump.

Horizontal Offset Piping Sizes for Shallow Well Jets

		1-1/2"	2 _
t	1-1/4"	25 to 50 Ft.	50 to 200 Ft.
	Up to 25 Ft.

Discharge Pipe Sizes

When the pump is set at a distance from the house or point

of water use, the discharge pipe size should be increased to

reduce pressure losses caused by friction.

1"	l	1-1/4"	1-1/2"
Up to 25 Ft.	_	25 to 100 Ft.	100 to 600 Ft.

ff horizontal suction pipe is more than 25' long, install a priming plug at well head to allow filling of pipe.

SEARS jet pumps should be used vdth Captive Air® Tanks

(see Figure 2, Page 3). For mounting pump to tank, pur- chase tank fittings Kit No. 2788.

SEARS Captive Air* Tanks are pre-charged with air at the fac-

tory. Check the tank Owner's Manual to find if air charge

needs adjustment. Pump model 390.2508 requires 30 pounds for proper operation.

The Jet pump can also be mounted on standard horizontal

tanks. A mounting kit with an AVC is furnished with tank (Figure 1, Page 3). Instruction are also included.

The installation, operation and care of your Hydroglass® pump is very similar to cast iron pumps. We ask, however, that you keep the following points in mind.

IMPORTANT: Use teflon tape supplied with the pump

for making all threaded connections to the pump it-

self. Do not use pipe joint compounds on the pump!

1.Wrap one and one-half to two layers of Teflon tape on all

male threads being attached to pump. This vdll insure

leakproof connections. Do not overtighten threaded fiv tings in the plastic pump. If leaks do occur, remove the

fitting, clean off the old Teflon tape, rewrap with one and one-half to two Myers of new tape and remake the connection.

2.Be sure to support all piping connected to your Shallow Well Jet Pump.

3.To connect AVC to the pump, remove the 1/8" pipe plug (Key No. 13, Page 11) from the jet portion of the pump body near the suction tapping. Insert a 1/8" fitting into

this tapping. Cut tubing to length and assemble the two fittings on the air volume control and pump body.