Sub-Zero 648PRO User Manual page 10

S U B - Z E R O
WAT E R F I LT R AT I O N
The PRO 48 features a water filtration system
that supplies filtered water to the ice maker to
produce great-tasting ice. The water filter has
been factory installed behind the grille
assembly.
It is important that the operation, maintenance
and filter replacement requirements be carried
out as scheduled. See Water Filter Cartridge
Monitor.
IMPORTANT NOTE: If the unit has been
turned off or the ice maker disabled for one
month or longer, the water filter cartridge
should be replaced once the unit and ice
maker are back in operation.
IMPORTANT NOTE: Do not use with water
that is microbiologically unsafe or of unknown
water quality without adequate disinfection
before or after the system. Systems certified
for cyst reduction may be used on disinfected
waters that may contain filterable cysts.
Refer to the Performance Data on page 25 for
additional information regarding the water
filtration system.
10
P R O 4 8 U S E & C A R E
S Y S T E M
W AT E R F I L T E R C A R T R I D G E M O N I T O R
The water filter cartridge is designed to last for
up to one year of continuous use of the ice
maker. The electronic control system monitors
the life of the water filter cartridge and indi-
cates when it needs to be replaced. An indica-
tor that reads "REPLACE FILTER" will be
visible in the left side exterior temperature
display. Follow steps to replace the water filter
cartridge on the following page.
Once the filter cartridge has been replaced, the
control automatically resets the water filter life
monitor and the "REPLACE FILTER" indicator
will no longer be displayed.
Although it is designed to last for up to one
year of use, the actual life of the filter cartridge
may vary with water supply conditions. There-
fore, it is recommended that the filter cartridge
be replaced when the "REPLACE FILTER" indi-
cator is displayed or if the ice cubes become
hollow or smaller.
IMPORTANT NOTE: The warranty for the
water filter cartridge supplied with the unit
only covers defects in materials or workman-
ship and not replacement due to normal use.
Replacement water filter cartridges (part
# 4204490) can be ordered by calling
800-768-0052 or online at subzero.com.