Turn off your hot water heater (if gas, turn to "pilot"). Turn the valve(s)
on your filter(s) to "bypass". Turn on all hot water faucets and other sources,
including your showers. Let the water run until it turns cold. Check all hot
water sources to make sure you get a chlorine reading.

Turn on all cold water faucets and hose bibbs (inside and outside) and
let the water run until you get a chlorine reading at every source.

Run your dishwasher, your clothes washer and your refrigerator's water
(if any) to allow chlorine to enter that piping as well.

Once you're sure you have a chlorine reading at every source of water,
turn off all faucets and hose bibbs. Wait 30 minutes to allow
the chlorine to do its work.

Finally, reset your bypass valve to the "Service" position and
run the water until all the chlorine is gone. Then, turn the breaker
for your hot water heater back on (or turn your gas water
heater back to "on") and resume normal operation.