Operating Instructions and Parts Manual

JSU50

Installation (Continued)

Make sure the pump has adequate ventilation. The surrounding temperature should not exceed 100˚F (38˚C) or nuisance tripping of thermal overload protector on the motor may occur.

Pump piping installation

Use new pipe for best results. Iron, copper or PVC pipe may be used. To avoid strain on the pump when using iron or copper pipe, provide independent supports for both suction and discharge piping near the pump. Minimize use of elbows and fittings to reduce friction loss. Refer to the friction loss chart (page 5) for specific information. Increase diameter of suction or discharge piping if length is over 50 feet.

Water

Line

To Well or Cistern

Figure 1 - Pipe Installation

suction piping

Install foot valve or strainer screen

over intake of suction piping.

Never use pipe smaller than 1-1/4” diameter for suction piping. Keep suction pipe free of air leaks. For horizontal runs, lay pipe from the water source so the upward slope is at least 1/2" per foot. This eliminates trapped air. The threaded inlet of the pump is 1-1/4" NPT.

Do not install suction piping near

swimming areas.

discharge piping (Figure 2)

Install a 3/4” pipe cross (sold separately) in the pump discharge. Plug top of pipe cross with 3/4” NPT pipe plug (sold separately). Insert tank tubing into side opening of pipe cross. Insert pipe into remaining side opening for connection to home water supply line.

Piping to home
water system
Pipe Cross
	Prime
	Plug
Tank
Tubing
Figure 2	Air volume control
Figure 2	connection

connection to water tanK

CONVENTIONAL TANk (See Figures 3 & 4)

A conventional water tank stores water and pressurized air in the same compartment. When full, the tank contains approximately 2/3 water and 1/3 compressed air. This type of tank requires an air volume control, which automatically replaces air lost due to leak or absorption into the water.

1.Shut off power to pump. Disconnect and lock out power source.

2.Drain the tank. Opening faucet nearest tank is recommended.

3.Insure tank is secured to the floor or base.

4.Bolt pump to the floor or the mounting bracket on tank.

5.Install air volume control on tank.

6.Connect the tube from the air volume control to the front 1/8" NPT opening on the side of the pump. Connections must be tight. Leaks will cause the pump not to prime and/or the tank to become waterlogged.

7.Install a valve and an isolator hose between the tank and the house plumbing. This will reduce the noise level of the pump system and aid in servicing.

8.Provide a hose bib (faucet) at the lowest point in the system to drain the system for service or storage.

Pressure	Prime Plug
Switch
	Inlet
Drain Fitting
Air Volume
Control
Tubing
	Air Volume
	Control

Figure 3 - Shallow Well Pump with Conventional Horizontal Tank

Air Volume

Control

Air Volume

Control Tubing

Prime

Plug

Inlet

Drain

Fitting

Figure 4 - Shallow Well Pump with Conventional Vertical Tank

9.Slope horizontal lines up toward pump a minimum of 1/4" per foot. This will prevent trapping air in the lines.

PRE-CHARGED TANK (See Figure 5)

A pre-charged water tank stores air and water in separate compartments, separated by a flexible bladder. The barrier prevents the air from being absorbed into the water. The bladder design also allows the water to be acted on by higher pressures for longer periods than a conventional tank. Pre-charged tanks have roughly twice the usable capacity of a conventional tank with equal volume. The air pressure in a pre-charged tank must be checked periodically to insure it is at an acceptable level (See Maintenance).

1.Shut off power to pump. Disconnect and lock out power source.

2.Drain the tank. Open faucet nearest the tank.