SAFETY INSTRUCTIONS (Continued)

6.Disconnect electrical power source before installing or working on pump.

7.Ground pump with a ground wJ_e run from grounding lug on motor to a grounded lead in the service panel.

8.Line voltage and frequency of electrical power supply must agree with motor nameplate.

9.Use of fuses or wire smaller than size recommended in

owner's manual can cause overheating, possible fires, and will void warranty.

TABLE I - Pump Performance (In Gallons per Minute)

NOTE: This system is designed for pumping depths of 20 feet or Jess.

Pump

 

 

 

Discharge

Pumping Depth in Feet

Model

Description

Suct.

Disch.

Pressure PSI

5'

10'

15'

20'

390.2521

1/2 HP S.W Jet

1-1/4"

1"

40

8.2

7.3

6.2

5.0

 

 

 

BASIC TOOLS AND MATERIALS NEEDED

 

Plastic

Pipe

Installation

 

 

 

 

Tools

 

 

 

Materials

 

 

 

Pipe Wrenches

 

 

Plastic Pipe

and Fittings (as required to complete job).

 

Screwdriver

 

 

 

 

 

 

 

Knife or Saw to Cut

Plastic Pipe

Teflon Tape

(DO NOT use joint compound

on plastic

fittings).

Tire

Pressure

Gauge

 

 

 

 

 

 

Galvanized

Steel

Pipe

Installation

 

 

 

Tools

 

 

 

Materials

 

 

 

Pipe Wrenches

 

 

Galvanized

Pipe and Fittings (as required to

complete

job).

Screwdriver

 

 

 

 

 

 

 

Pipe

Cutting

and Threading Tools

Pipe Joint Compound or Teflon Tape

 

 

Tire

Pressure

Gauge

 

 

 

 

 

 

 

 

MAJOR

COMPONENTS

AND WHAT THEY

DO

 

Impeller and Jet

Impeller turns with motor shaft, causing water to fly out

from its rim by centrifugal force. Impeller rotation creates a vacuum which pulls in more water. Part of the water is di-

verted back to the jet where it passes through the nozzle and venturi. This creates more vacuum to draw in more water.

In shallow wells (less than 20 feet deep), the vacuum cre-

ated at the pump is enough to pull water to the pump.

Therefore, for shallow well use the jet is built into the pmnp.

Pre-Charged Tank

The tank serves two functions. It provides a reservoir of

water under pressure and maintains a cushion of air pres-

sure to prevent pipe hammering and possible damage to

plumbing components. When water is drawn off through

the house fixtures, the pressure in the tank is lowered and the pump starts,

Pressure Switch

The pressure switch provides for automatic operation.

Pump starts when pressure drops to 40 pounds and stops when pressure reaches 60 pounds.

Check Valve or Foot Valve

This pump is equipped with a buik:m check valve. Install a

check valve as close to well as possible on well point in- stallations. A foot valve must be installed in the well on dug or cased wells. See Figures 2A and 2B, Page 4. For long hor- izontal pipe runs, install check valve as close to well as pos- sible (all types of wells).

3

Page 2 Page 4
Page 3
Image 3
Sears 390.2521 owner manual Basic Tools and Materials Needed, Major Components What They
Page 2 Page 4

390.2521 specifications

The Sears 390.2521 is a notable addition to the world of household appliances, particularly recognized for its versatility and user-friendly design. This multi-functional device is primarily known as a microwave oven, making it a staple in many kitchens. With its compact build and efficient performance, the 390.2521 caters to various cooking needs, from heating leftovers to preparing entire meals.

One of the main features of the Sears 390.2521 is its powerful microwave generator, which typically operates at a wattage of around 900 watts. This ensures that food heats evenly and efficiently, reducing cooking time and energy consumption. The model's sleek design includes a spacious interior that can accommodate large dishes, making it suitable for family meals or batch cooking.

The 390.2521 comes equipped with a variety of cooking presets, allowing users to quickly select the appropriate settings for different types of food. These presets include options for popcorn, pizza, and beverages, among others. The intuitive control panel is designed for ease of use, featuring soft-touch buttons and a digital display that clearly indicates cooking times and power levels.

In terms of safety features, the Sears 390.2521 includes a child lock function to prevent accidental operation, making it a trustworthy option for families with young children. Additionally, the appliance is fitted with an automatic shut-off system, which activates at the end of the cooking cycle to prevent overheating and ensure safe use.

Technologically, the 390.2521 leverages the latest advancements in microwave technology. Its sleek interior design is easy to clean, thanks to a non-stick coating that resists food buildup. The turntable feature ensures even cooking by rotating food for optimal heat distribution, which is particularly beneficial when reheating or defrosting.

Another noteworthy characteristic of the Sears 390.2521 is its energy efficiency. The appliance is designed to minimize energy consumption, which is an essential consideration for environmentally conscious consumers. Its compact size also makes it easy to fit into various kitchen layouts, offering both functionality and aesthetic appeal.

In conclusion, the Sears 390.2521 microwave oven stands out in the competitive kitchen appliance market due to its combination of power, safety features, and user-centric design. Whether for quick heating, defrosting, or cooking, this model serves as a reliable and stylish option for any modern kitchen, making meal preparation faster and more convenient.
Top Page Image Contents