Maintenance; Flow Control; Change Collet And O-Ring; Change Battery - Whirlpool WHER25 Installation And Operation Manual

FLOW CONTROL

The flow control is vital for proper operation of the
Reverse Osmosis membrane cartridge. See Fig. 27. The
flow control, located in the red tube at the system hous-
ing, keeps water flowing through the membrane at the
required rate. This is to ensure the system produces the
best quality product water.
Periodically check the flow control assembly to be sure
the small hole through it is clean and unrestricted.
If the flow control assembly requires service, review the
exploded view in Fig. 27. Assemble and disassemble as
shown.

CHANGE COLLET AND O-RING

1. Remove the collet and o-ring from the fitting with a
small screwdriver. Be careful not to scratch the inter-
nal walls of the collet port. See Fig. 28-29.
2. Clean collet port, lubricate and insert the o-ring seal
into the bottom of the port. See Fig. 28-29.
3. Push the collet inward until it locks in place.See Fig.
28-29.

CHANGE BATTERY

To change battery, complete the following steps.
1. Loosen the screw on the right side of the faucet base.
See Fig. 30.
2. Press the battery housing upwards from the front faucet
base until it releases from the faucet base. See Fig. 30.
3. Replace the battery (Maxell-CR 2032 or equivalent).
Place battery into the holder with the positive (+) side
facing the back of the holder.
4. When the battery is first replaced it will flash six times
and turn off. This indicates the battery is fully charged.
After the six flashes the timer enters the 6 month time
cycle. If it repeatedly flashes two times, it is not a fully
charged battery.
5. Re-install the battery housing and firmly tighten the
mounting screw. See Fig. 30.

Maintenance

21
To
Drain
Push o-ring seal into
bottom of port then follow
with collet.
O-Ring Seal
Collet
Change Collet and O-ring
Collet (Depress to
Remove Tubing)
Tubing
Disconnect Tubing
Flow
Control
Insert
1/4'' Red
Tubing
FIG. 27
Fitting
FIG. 28
FIG. 29
the front
side facing
negative (-)
FIG. 30Battery,