3M CFS101BWF Installation And Operating Instructions Manual page 10

Backwash filtration systems

Step 1

(a)

Remove control valve by rotating the valve head assembly to the left or counter-clockwise. Before loading the media into the tank, the distributor must be all

the way to the bottom of the tank. It is therefore recommended that the distributor be removed and the gravel dumped out and saved. The distributor tube

should then be replaced in the empty tank making sure it rests on the bottom. Use the centering tool provided to cover the distributor tube and prevent media

from entering the distributor. Material lodged in the distributor tube can enter the control valve, thus damaging it. First, pour the gravel removed earlier back

into the media tank and then add the media. Utilize the centering tool to help keep the distributor tube centered in the media tank opening to aid in mounting

the control over the distributor tube. Never add media to a level above the line on the side of the tank. Additional media may have been shipped for future

replenishment.

(b)

Fill the tank with water. Lubricate o-ring on tank adapter with silicone grease and reinstall the control valve. Make sure the distributor tube ﬁ ts into the valve

body tube adapter protruding from the bottom of the valve body. Secure the control valve onto the MEDIA tank by turning the valve clockwise (to the right

when viewing from the top)until the valve contacts the media tank, then approximately 1/4 turn more. Take care to not cross thread the MEDIA tank with the

control valve threads.

(c)

If the bypass valve/yoke assembly is not factory pre-installed, attach to back of control valve using adapter couplings, clips and screws.

Never add media above line indicated on side of tank. You may have received more media than required for the initial ﬁ ll, save extra media for future

replenishment.

To reduce the risk associated with skin, eye, and respiratory tract irritation from dust from ﬁ lter media during installation:

• Gravel and several types of ﬁ lter media may be used in this product, depending upon the application. During installation, dust may cause irritation to skin,

eyes, and respiratory tract, and may affect lungs.

• Utilize a NIOSH-approved dust ﬁ lter mask and appropriate eye protection when handling and pouring gravel and ﬁ lter media.

• To request an MSDS relating to the media for this product, call 203-238-8965 or go to www.3M.com , select country, and use the search engine to search

MSDS. For emergencies, call 800-364-3577 or 651-737-6501 (24 hours).

Step 2

Shut off water at main supply. On a private well systems, turn off power to pump and drain pressure tank. Make certain pressure is relieved from complete system

by opening nearest faucet to drain system.

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

• SHUT OFF FUEL OR ELECTRIC POWER SUPPLY TO WATER HEATER after water is shut off.

Step 3

Cut main supply line as required to ﬁ t plumbing to Inlet and Outlet of Bypass Valve Assembly.

Step 4

Solder or solvent weld plumbing. Do not apply heat to any ﬁ tting connected to bypass or control

valve as damage may result to internal parts or connecting adapters. Make certain water ﬂ ow en-

ters through inlet and discharges through outlet.

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

• Do not use a torch or other high temperature sources near ﬁ lter system, cartridges,

plastic ﬁ ttings or plastic plumbing.