Advantage Controls SFS Series, Installation Maintenance Repair Manual

6

Electric Models 

The standard units are designed to be free standing or wall mounted.  The level controller, control solenoid 

valve and level float assembly are all prewired for easy installation.

Models with 120 VAC controllers are supplied with an 8 foot, 3-wire grounded power cord.

Models with 12 VDC controllers are supplied with a wall plug-in transformer.

A ¼” MNPT connection is supplied for the incoming water supply.  The pressure of the incoming water should 

not exceed 110 PSI.

The reservoir tank has a molded pump mounting shelf.  Various pump mounting accessories will be included 

depending upon the model number for securing pump to tank.  A flooded suction connection is also provided 

for the chemical feed pump.

Notes:  1.  Pressure regulators are preset to approximately 40 psi.  If incoming water pressure is below 50 

psi the regulator will need to be set to a lower level to insure proper valve operation. Turning the 

small knob on regulator counter clockwise will reduce the incoming line pressure.

2.  All models have an air gap design utilizing the overflow port (see page 8) that provides a 

positive back flow prevention leaving no pressurized path for dissolved solution back into the 

fresh water supply line.

III. Operation

The electric level controller will activate a relay to power the make-up water solenoid when the solution level 

in the reservoir tank becomes low and turns off the relay when the solution tank becomes full, reaching the 

second float or (high) point.  The standard level float positioning and 1” MNPT connection for overflow to 

be piped to drain are designed to maintain a maximum solution level of 2.5 gallons.  Changing the pressure 

regulator setting will change the dissolving rate.

 An additional high-level override switch input can be added with the H option on models that operate on 

120 VAC.  If the controller detects a contact from the high alarm switch, the control relay is turned off and 

the alarm relay is activated.  Models operating on 12 VDC have the H2 option in which the high alarm simply 

turns off the control relay.

Muti-bowl models are designed to eliminate valuable maintenance time and create easy upkeep.  

Option C-2 will allow a feed system to operate 2 or more bowls sequentially switching automatically by using 

a conductivity controller, increasing the jug replacement interval.