Sterling SGM-250A User Manual

Place the unit on a suitable and level foundation, preferably a 
concrete floor or pad and near the pump for best operation. The 
location you select must also have an open drain to a sewer for 
backwash, a hookup to city water, and a 110-volt electrical source. 

 

Use a fork lift truck when moving the unit to avoid damage. 

 
 

Be sure that piping to the unit has a bypass circuit. The bypass 
circuit allows for removal of the unit for servicing without 
interrupting water service. Always run piping full size at 1½” NPT 
(approx. 38 mm). Connect the entering water connection of the 
filter unit to the process supply and the leaving connection to the 
tank. Use 2” NPT (approx. 51 mm) to hook up city water or 
process water to the backwash connector piping, as well as to 
connect back-flush connections to the city waste or sewer. 

 
 

Figure 1 

Typical Sand and Gravel Filter