3M NWS100M, NWS200M, NWS150M manual Check Your Pumping Rate and Water Pressure

Check Your Pumping Rate and Water Pressure:

Two water system conditions must be checked carefully to avoid unsatisfactory operation or equipment damage:

1)MINIMUM water pressure required at the water softener inlet is 20 psi (138 kPa). IF WATER PRESSURE IS OVER 80 psi (552 kPa), A PRESSURE RE-

DUCING VALVE MUST BE INSTALLED IN THE WATER SUPPLY LINE AHEAD OF THE WATER SOFTENER.

CAUTION

To reduce the risk associated with property damage due to water leakage:

•Do not install if water pressure exceeds 100 psi. If your water pressure exceeds 80 psi (552 kPa), you must install a pressure limiting valve. Contact a plumb- ing professional if you are uncertain how to check your water pressure.

NOTE: If you have a municipal or a community water supply and daytime water pressure is 85 psi or more, nighttime pressure may exceed 100 psi. Call your local water department or plant operator to obtain pressure readings. If you have a private well, the gauge on the pressure tank will indicate the high and low system pressure. Record your water pressure data below:

Water Pressure:

Low psi High psi

CAUTION

To reduce the risk associated with property damage due to water leakage:

• Do not install system where water lines could be subjected to vacuum conditions without appropriate measures for vacuum prevention.

The installer should take appropriate measures if there is the possibility a vacuum may occur. This would include the installation of an appropriate device in the supply line to the system, i.e., a vacuum breaker or backflow prevention device. Vacuum damage voids the factory warranty.

2)The pumping rate of your well must be sufficient for satisfactory operation and BACKWASHING of the water softener. (See SPECIFICATIONS AND OPERATING DATA, Section 6)

Locate Water Conditioning Equipment Correctly:

Select the location of your water softener with care. Various conditions which contribute to proper location are as follows:

1)Locate as close as possible to water supply source.

2)Locate as close as possible to a drain.

3)Locate in correct relationship to other water conditioning equipment (Figure 1, page 2-1).

4)Locate the softener in the supply line BEFORE the water heater. Temperatures above 110°F (43.3°C) will damage the softener and void the factory warranty.

5)DO NOT install the softener in a location where freezing temperatures occur. Freezing may cause permanent damage and will also void the factory warranty.

6)Allow sufficient space around the installation for easy servicing.

7)Provide a non-switched 110V, 60Hz (220V, 50Hz for specified systems) power source for the control valve.

WARNING

To reduce the risk associated with ingestion of contaminants:

• Do not use with water that is microbiologically unsafe or of unknown quality without adequate disinfection before or after the system.

CAUTION

To reduce the risk associated with property damage due to water leakage:

•Protect from freezing, relieve pressure and drain system when temperatures are expected to drop below 33°F (0.6°C).

•Do not install on hot water supply lines. The maximum operating water temperature of this filter system is 110°F (43.3°C).

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