General Safety Information Continued, Water Supplies

Operating Instructions & Parts Manual

CWS50, CWS75 and CWS100

General Safety Information (Continued)

12.Do not run the pump dry or damage will occur and will void warranty.

This pump is designed for indoor

installation only. Failure to install indoors will significantly increase the risk of injury or death from electrical shock.

All wiring should be performed by a

licensed or certified electrician.

13.For maximum safety, the unit should be connected to a grounded circuit equipped with a ground fault interrupter device.

14.Before installing the pump, have the electrical outlet checked by a licensed or certified electrician to make sure the outlet is properly grounded.

15.Make sure the line voltage and frequency of electrical current supply agrees with the motor wiring.

16.Do not attempt repairs to the electric motor. All repairs to the motor must be completed at a licensed or certified electrical motor repair shop.

Do not touch an operating motor.

Modern motors are designed to operate at high temperatures.

17.Avoid kinking electrical cord and protect electrical cord from sharp objects, hot surfaces,

oil and chemicals. Replace or repair damaged or worn cords immediately.

18.Keep fingers and foreign objects away from ventilation and other openings. Do not insert any objects into the motor.

Risk of electric shock! Never

connect the green (or green and yellow wire) to a live terminal!

19.To reduce the risk of electrical shock, the pump should be plugged directly into a properly installed and grounded 3-prong grounding type receptacle, as shown in Figure 1. The green (or green and yellow) conductor in the cord is the grounding wire. The motor must be securely and adequately grounded for protection against shock.

Grounded Pin

Figure 1	Grounded Outlet

20.Where a 2-prong is encountered, replace the plug with a properly grounded 3-prong receptacle in accordance with the National Electrical Code, local codes and ordinances. To ensure a proper ground, the grounding means must be tested by a licensed or certified electrician.

21.Use only 3-wire extension cords that have a 3-prong, ground type plug, and 3-pole receptacles that accept the equipment plug.

22.Use wire of adequate size to minimize voltage drop at the motor.

Do not handle pump or pump motor with

wet hands, when standing on a wet or damp surface or when standing in water. Fatal electrical shock could occur.

Pump motor is equipped with an

automatic resetting thermal protector and may restart unexpectedly. Protector tripping is an indication of motor overloading because of operating pump at low heads (low discharge restriction), excessively high or low voltage, inadequate wiring, incorrect motor connections or defective motor or pump.

Pre-Installation

WATER SUPPLIES

The water supplies illustrated in Figure 26 are possible sources for water. These water supplies can be divided into two categories:

SURFACE WATER

Water from a lake, stream, pond and cistern. This water is usually not fit for human consumption, but may be suitable for washing, irrigation or other household uses.

GROUND WATER

Water found in the water bearing stratum at various levels beneath the earth. Of all the fresh water found on earth only 3 percent is found on the surface and 97 percent is underground.

TANKS - CONVENTIONAL STORAGE

The function of the tank is to store a quantity of water under pressure. When full, the tank contains approximately 2/3 water and 1/3 compressed air. The compressed air forces the water out

of the tank when a faucet is opened. An air volume control automatically replaces air lost or absorbed into the water. The usable water, or draw-down capacity, of the tank is approximately 1/6 of the tanks total volume when operated on a “20-40” pressure setting (Figure 2).

Air Volume

Control

Bladder

Conventional Pre-charged

TankTank

Figure 2 - Conventional and

Pre-charged Storage Tanks

TANKS - PRE-CHARGED STORAGE

A pre-charged storage tank has a flexible bladder or diaphragm that acts as a barrier between the compressed air and water. This barrier prevents the air from being absorbed into the water and allows the water to be acted on by compressed air at initially higher than atmospheric pressures (pre-charged). More usable water is provided than with a conventional type tank. Pre- charged tanks are specified in terms of a conventional tank. For example, a 20 gallon pre-charged tank will have the same usable water or draw-down capacity as a 40 gallon conventional tank, but the tank is smaller in size (Figure 2).

PRESSURE SWITCH

The pressure switch provides for automatic operation. The pump starts when pressure drops to a cut-in setting. The pump stops when pressure reaches a cut-out setting.