Culligan 9" Owner's Manual page 18

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Backwash Flow Control, Eductor Nozzle—Throat
Listed below is the recommended backwash flow control, eductor nozzle, and eductor throat to be
used for various size tanks.
Refer to Figure 6 through Figure 8 and instructions below for changing the backwash flow control,
eductor nozzle, and eductor throat.
Unit Backwash Flow
9" 2.5 gpm (#2 Brown)
10" 2.5 gpm (#2 Brown)
12" 3.0 gpm (#3 Green)
14" 5.3 gpm (Black)
* Shipped assembled inside the control standard from factory
Eductor Nozzle and Throat Replacement
Refer to Figure 6 and the instructions below when changing the eductor nozzle and throat.
1. Remove the eductor cap clip.
2. Remove the eductor cap.
3. Remove the eductor assembly.
4. Remove the eductor screen from the assembly
5. Remove the blue nozzle and replace it with the correct nozzle. See Table 2.
6. Make sure to put the O-ring on the nozzle.
7. Replace the eductor throat if required.
8. Reverse the procedure to reassemble.
NOTE Observe the orientation of the arrow on the eductor cap. The arrow faces
down for downflow regeneration applications; the arrow faces up for
upflow/proportional brining regeneration applications.
NOTE When installing a 10", 12" or 14" tank, the Eductor Factor A, Eductor
Factor B, and Brine Fill Flow needs to be updated in the circuit board; see
"Advanced System Setup" for the procedure.
Clip
Throat
Eductor Cap
Figure 6. Removing the eductor nozzle and throat.
Nozzle
Blue* Light Brown*
Beige Light Brown
Beige Light Brown
Green
Table 2. Flow Restrictors
Screen
Nozzle
Throat Brine Refill Flow
0.45 gpm*
0.45 gpm
0.8 gpm
Blue 0.8 gpm