The “A” dimension is the distance from the top of the filter screen of the brine valve chamber to the bottom edge of
the lower float when the stem is in the fully raised position.
Refer to Table 8 for the correct “A” dimension (secondary shutoff) for the salt dosages on the water softener
models. Adjust the “A” dimension as follows (Figure 8).
• Lift the brine valve from the brine chamber.
• Find the correct “A” dimension from Table 8.
• Set the distance from the top of the filter screen to the base of the float accordingly. The slight difference in
height when the float is pulled up or down is negligible.
• Place the float assembly back in the chamber.
Refill Flow Control
As shipped from the factory, a 0.45 gpm refill flow control is used to control the refill flow rate. This is the standard
refill rate as referenced in Table 8. An optional 0.80 gpm flow control is available (PN 00-4016-23). It is recommended
that the 0.80 gpm flow control is used when salt dosages are greater than 15 lb. Replace the flow control as follows:
• Lift the brine valve from the brine chamber.
• Grasp the knurled top of the brine cap and unscrew it.
• Remove the 0.45 gpm flow control and replace with the 0.80 gpm control.
• Screw the top in and place the float back into the chamber.
NOTICE: When changing to the 0.80 gpm flow control, remove the 0.45 gpm label from the top of the brine cap.
This will help to eliminate confusion at a future date.
NOTICE: When using the 0.80 gpm flow control, shift the #5 dip switch to the ON position. This enables the fast
refill mode for the softener.
“A” Dimension Charts/Refill Rates
"A"
FIGURE 8
24 CULLIGAN
®
MARK 100 WATER SOFTENER