installation
and
operation
MODEL 315
ice maker
®
installation
and
operation
InTRODUCTION
The Sub-Zero Model 315 is a restaurant-type ice maker
designed for home use. It produces the same high quality
clear ice that you would expect from Sub-Zero.
This guide is intended as a resource for the installation and
operation of the Model 315. Because it contains information on safety and maintenance, Sub-Zero strongly recommends that this manual be read thoroughly and that it be
kept where it is readily available.
Before you begin your installation, there are a few things
you should take special care to observe.
As you follow these installation instructions, take particular note of the WARNING! and CAUTION! symbols when
they appear. This information is important for the safe and
efficient installation of this Sub-Zero.
In addition, the printed instructions may signal an
IMPORTANT NOTE, which highlights information that is
especially important for a problem-free installation.
Second, make sure that the actual equipment that was
shipped to you matches the design you are expecting to
install. If the unit you receive does not match your requirements, contact your Sub-Zero dealer.
WARNING
alerts you to a hazard that may cause serious injury or
death if precautions are not followed.
CAUTION
signals a hazard where minor injury or product damage may occur if you do not follow instructions.
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-15
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-17
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-19
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 20-21
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2
MODEL 315
ice maker
®
PRE-INSTALLATION
Technical Information
Your Sub-Zero ice maker is designed and manufactured
with the highest regard for safety and performance. It
meets or exceeds the standards of UL, and CUL. Sub-Zero
assumes no liability or responsibility of any kind for products manufactured by Sub-Zero that have been altered in
any way, including the use of any parts and/or other components not specifically approved by Sub-Zero. Sub-Zero
reserves the right to make design changes and/or
improvements at any time. Specifications and designs are
subject to change without notice.
Model 315 Features
3
335/8"
(854)
153/16"
(386)
293/8"
(746)
4"
(102)
335/8"
(854)
19"
(483)
21/8"
(54)
19"
(483)
TOP VIEW
153/16"
(386)
115˚
DOOR SWING
SIDE VIEWFRONT VIEW
OVERALL DIMENSIONS
H
I
G
HL
O
W
N
O
R
M
A
L
O
F
F
ICE LEVEL
C
ONTROL
Control Knob
Kickplate/Grille
Control Box Cover
Door Gasket
Curtain
Reservoir
Pre-Installation Considerations
To properly make and store ice, the Model 315 requires
access to air, potable water, 115 volt electricity and a drain.
The ice maker must be installed indoors, in a controlled
environment.
AIR: The ice maker uses a fan to take in room air at the
front of the ice maker through the right side of the kickplate. It discharges warm air out the left side of the kickplate. Anything placed in front of the kickplate will restrict
air flow and cause a decrease in performance and efficiency. The minimum air temperature the ice maker will operate in is 50˚F, and the maximum is 100˚F.
WATER SUPPLY: The ice maker requires a continuous
supply of potable water at no less than 20 psig of flowing
pressure. Static water pressure should not exceed 80 psig.
The minimum water temperature the ice maker will operate in is 40˚F, and the maximum is 100˚F.
WATER QUALITY: There is no such thing as “pure”
water; all water, including potable water supplied by
municipalities, contains some "impurities".Water absorbs
impurities from the air as rain and/or as it flows through
the ground. Some of the impurities are solid particles,
these are known as suspended solids, and a fine particle
filter will remove them. Other impurities are chemically
bonded to the water molecules, and cannot be filtered out,
these are called dissolved solids.
Ice made by the Model 315 will have a lower mineral content than the water it was made from.
Ice Scoop
4
Pre-INSTALLATION
Pre-Installation Considerations
Purer water will freeze first in the ice making molds. The
reason for this is that anything dissolved in water lowers
the water’s freezing temperature.
This concentrates most of the impurities in the ice maker
water reservoir where they may form hard deposits known
as scale. The Model 315 dilutes the concentration of minerals by over-filling the reservoir during the harvest cycle
(with the excess water flowing down the drain). About 3
quarts of water flow into the unit each cycle.About 1 quart
of that rinses the reservoir and goes down the drain.
Some impurities will inevitably remain, and will stick to the
parts in the ice maker, and will cause malformed ice cubes.
Eventually, built up mineral scale can shorten ice maker
life.
To keep the ice maker operating properly, these impurities
or minerals will have to be regularly dissolved by an acid
cleaning, using Sub-Zero ice maker cleaner. Directions for
this may be found in the section under cleaning.
In general, it is always a good idea to filter the water. A
water filter, if it is of the proper type, can remove taste and
odors as well as particles. Some methods of water treatment for dissolved solids include reverse osmosis, and
polyphosphate feeders. A reverse osmosis system should
include post treatment to satisfy the R.O. water’s "aggressiveness".
Deionized water is not recommended.
Because water softeners exchange one mineral for another, Sub-Zero does not recommend their use for ice makers.
Where water is very hard, softened water may result in
white, mushy cubes that stick together.
Sub-Zero suggests, that if in doubt about the water, that a
local point of use water specialist be contacted for recommendations on water treatment.
Area Requirements
Before moving the units in place, be sure the finished
dimensions, electrical and plumbing locations and minimum door clearances are accurate. Refer to the "Preinstallation Specifications" illustrations on pages 6 and 7.
Be sure your plumber, electrician and cabinet installer have
this information before finishing work is completed.
The Model 315 is a gravity drain model that requires a
drain tube that’s pitched down from the outlet at the back
of the cabinet to the connection to the sanitary sewer.
The Model 315P has a built in drain pump that will pump
water up to a drain point, such as a nearby sink.
Pre-INSTALLATION
Moving the Unit
IMPORTANT NOTE: When you move the unit into the
house using a hand truck or dolly,position the dolly on the
side of the unit and secure the door so it does not open
while transporting the unit.
IMPORTANT NOTE: The floor under the ice maker must
be at the same level as the surrounding finished floor.
Electrical
A 115 volt, 6OHz, 15 amp circuit breaker and electrical
supply are required. A separate circuit is required for each
unit. Follow the National Electrical Code and local codes
and ordinances when installing the receptacle.
The ice maker is supplied with a cord,and may be plugged
into a wall outlet. The ice maker should be the only device
using that circuit.
WARNING
Model 315 is equipped with a 3-prong grounding plug
and they must be plugged into a mating 3-prong
grounding-type wall receptacle.
Do not use an extension cord, or two prong adapter.
Electrical ground is required on this appliance.
Do not under any circumstances remove the power
supply cord ground prong.
5
Plumbing
Rough in the water supply line. Connect a 1/4” OD copper
line to the house supply. Be sure to use an easily accessible shut-off valve between the supply and the appliance.
This shut-off valve should not be installed behind the unit.
Do not use “self-piercing” valves. A saddle valve (part #420-088-0) is available from your distributor/dealer. A line
filter is required when the water supply has a high mineral content. The water supply must maintain 20 to 80 psi of
water pressure.
The water supply and drain should be roughed in and
ready at the point of installation. A wall outlet directly
behind the ice maker will make the installation easier. All
electrical, water and drain connections must conform to
local codes.
IMPORTANT NOTE: Although the Model 315 has been
designed to be serviced in place, in some cases it may be
necessary to pull the unit out for service. For that reason
do not restrict access to the cabinet at the front–top and
bottom.
If a floor is to be installed after the ice maker, shims the
thickness of the floor should be installed under the Model
315 to keep the ice maker level with the floor. Also, allow
1/8" clearance on each side of the cabinet for protruding
screw heads.
INSTALLATIONS ON A SLAB: Use a Model 315P and
pump the water to the point of drainage.Pump models will
pump one story high.
INSTALLATIONS OVER A CRAWL SPACE OR BASEMENT: Either gravity drain or pump model units may be
used, if there is not enough room behind the ice maker for
a drain/waste receptacle, the drain will have to be below
the floor.
WARNING
Shut off the power to the wall outlet.
CAUTION
Any finished flooring should be protected with appropriate material to avoid any damage from moving the
unit.
6
INSTALLATION
Plumbing
Model 315 – Gravity Drain Model
The drain and inlet water tubes must be plumbed before
connecting to the ice maker. All horizontal runs of drain
lines must have a 1/4" per foot fall. An air gap will likely
be required between the ice maker drain tube and the
drain/waste receptacle. A stand pipe with a trap below it
would be acceptable for the drain/waste receptacle.
IMPORTANT NOTE: Poor draining will cause a high rate
of ice melting in the bin.
1) Place ice maker in front of installed location. Adjust
leg levelers to approximately correct position.
2) Remove door with hinges, control knob, control panel,
access panel and lower stainless face plate.
3) Route water inlet line, which should be a 1/4" O.D.
copper tube, from wall through ice maker to the front.
4) Route drain line from wall position through ice maker.
NOTE: if using a long horizontal run (more than 5 feet)
the drain should be vented at back of cabinet.
5) If electrical outlet for ice maker is behind the cabinet,
plug in the ice maker now.
6) Push ice maker into installed position.
7) Cut off water inlet line at required length.
8) Flush water line. Place flare nut on inlet water line and
flare the end of the copper tube.
9) Attach flare nut to the male flare on the inlet water
valve.
10) Cut off the drain tube to the required length.
11) Connect the 5/8" drain tube to the bin drain fitting at
the bottom of the bin. Secure with hose clamps.
Be certain that the drain tube is pushed up well past the
barbs on the drain fitting. If needed to ease installation,
soak the drain hose in hot water just before connecting to
the fitting.
12) Turn on the water supply and check for leaks.
13) Replace door with hinges, control knob, control panel,
access panel and lower stainless face plate. Level as
needed.
IMPORTANT NOTE: All plumbing must meet local codes.
151/4"
(387) MIN.
FRONT VIEW
SHUT-OFF
VALVE
WATER
FILTER
WATER
INLET TUBE
DRAIN
TUBE
TOP VIEW
SHUT-OFF
VALVE
WATER
FILTER
341/2"
(876) NOMINAL
333/4"
(857) MIN.
151/4"
(387) MIN.
24"
(610)
1
/8"(3)
WATER
INLET
TUBE
DRAIN
TUBE
LOCATE DRAIN
WITHIN 2" DIA.
AREA 23" BACK
FROM FRONT
OF UNIT
PRE-INSTALLATION SPECIFICATIONS
MODEL 315 (GRAVITY DRAIN)
Drain Tube
Clamp
Drain
Stand Pipe
Drain Tube Detail
7
INSTALLATION
Plumbing
Model 315P – Pump Model
1) Place ice maker in front of installed location. Adjust
leg levelers to approximately correct position.
2) Remove control knob, control panel and control access
panel.
3) Route water inlet line from wall through ice maker to
the front.
4) Locate coil of 3/8" ID plastic drain tubing secured to
the back of the cabinet.
5) Route plastic drain tube from back of cabinet to drain
connection point.
IMPORTANT NOTE: Often an air gap is required by local
codes between the ice maker drain tube and the drain
receptacle.
6) If electrical outlet for ice maker is behind the cabinet,
plug in the ice maker now.
7) Push ice maker into installed position.
8) Cut off water inlet line at required length.
9) Flush water line. Place flare nut on inlet water line and
flare the end of the copper tube.
10) Attach flare nut to the male flare on the inlet water
valve.
11) Turn on the water supply, and make sure that the ice
maker is plugged in and the power is on.
12) Pour a couple of quarts of water into the storage bin,
the drain pump should start and pump water out.
Check for leaks.
13) Replace control knob, control panel and control access
panel.
14) Level the cabinet as needed.
IMPORTANT NOTE: All plumbing must meet local codes.
PRE-INSTALLATION SPECIFICATIONS
MODEL 315P (PUMP)
FRONT VIEW
SHUT-OFF
VALVE
WATER
FILTER
WATER
INLET TUBE
AIR GAP
DEVICE
DRAIN
TUBE
TOP VIEW
SHUT-OFF
VALVE
WATER
FILTER
WATER
INLET TUBE
DRAIN
TUBE
AIR GAP
DEVICE
24"
(609)
1
/8"(3)
151/4"
(387) MIN.
151/4"
(387) MIN.
341/2"
(876) NOMINAL
333/4"
(857) MIN.
Drain Pump Kit
This ice maker can be ordered with (Model 315P) or without (Model 315) a pump. Models without a drain pump
drain their water by gravity. However, gravity drain models
may be converted to pump models through the installation
of a drain pump kit and drain pump.
Two parts are required for this conversion:
Drain pump kit part number ...............A36892020
Drain pump part number ..................12250321
Specific step-by-step instructions are included with the kit.
INSTALLATION
Completing the Installation
IMPORTANT NOTE: Turn on the water supply and check
all fittings for leaks. Make certain the electrical harness is
attached to the solenoid.
Let your customer know that the ice maker will not fill with
water immediately, and that the first batch of ice produced
should be discarded.Allow 24 to 36 hours to get proper ice
production.
IMPORTANT NOTE: When installed in a corner, the door
swing may be limited due to handle contact with the wall
or cabinet face.
Leveling
Level the unit by turning the leveling legs counterclockwise to raise or clockwise to lower.
HINT: To assist you in adjusting the front leveling legs up
or down, use a standard screwdriver blade and place it in
the front leg.
Securing the Unit
To secure the unit, install two #8 x 1/2" flat head screws
through each hinge. Refer to the illustration below.
88
Kickplate / Grille Installation
Once the Model 315 is secured, you can install the kickplate/grille. As shown in the illustration below, there is
some adjustment to the mounting assembly so this decorative piece can fit flush with the surrounding area.
The unit must be allowed to have ventilation through
these fins.The door panel may hang in front of the fins, but
your kickplate/grille must not cover them.
HINT: The kickplate/ grille can be painted another color, if
you choose. Follow these easy steps:
• Rough up surface to be painted with fine grit sandpaper.
• Wipe with alcohol to ensure it is clean and dry.
• Use an appliance or industrial grade, oil base, high gloss
enamel paint.
CAUTION
DO NOT cover the kickplate/ grille area.
ICE LEVEL CONTROL
H
IG
H
L
O
W
N
O
R
M
A
L
O
F
F
Kickplate/Grille Installation
HIGH
LOW
NORMAL
OFF
Flat Head
Screws
Securing the Unit
99
IMPORTANT NOTE: There is a part, packed with the ice
maker, that is required for this procedure.
1) Remove the hinge cover.
2) Remove the door by removing the (4) screws that
secure the door to the door hinges.
3) Remove the door hinges by removing the (4) screws
that secure them to the cabinet.
4) Remove the (4) screws from the opposite hinge side
(or left-hand hinge mount holes) and reposition into
the right-hand hinge mount holes.
5) Install the hinges using the left-hand cabinet mount
holes.
6) Install the door using the left-hand door mount holes.
7) Remove the (2) screws which secure the upper door
panel mount bracket.
8) Install the upper door panel mount bracket using the
left-hand mount holes.
9) Install the left-hand door hinge cover with the original screws.
10) Check the operation of the door by opening and closing it.
INSTALLATION
Panel Considerations
Refer to instructions for installation under "Panel
Installations". You should be sure of panel sizes and placement before proceeding with installation. If you have
questions, contact the selling Sub-Zero dealer or cabinet
supplier. Instructions regarding sizing of the panels are
provided in the "Sub-Zero Design Guide".
IMPORTANT NOTE: Do not install hinge covers until the
door swing direction and door stop angle have been finalized.
Side Panels
With Model 315 you must securely fasten the side panels
to adjacent cabinets and floor.
Panels should be fastened to the floor and walls using "L"
brackets (hardware not provided). To help you move the
unit into place, route out an area in the floor so the ‘L’
bracket will sit flush with the floor level. Brackets and
screws are provided for mounting the unit to adjoining
cabinets and side panels.
Reversing Door Swing
The hinged side of the door may be reversed to the other
side if desired.
The Model 315 was shipped with the door hinged at the
right. The door and hinges are designed for placing the
hinges on either the right or the left side of the cabinet.
Moving the hinges to the left in the pre-drilled holes,
allows the door to pivot from the left side.
Right-Hand Door Swing
Configuration
Left-Hand Door Swing
Configuration
10
INSTALLATION
Panel Installation
The Model 315 will easily accommodate a door panel as
long as you follow these points.
For any door handle hardware, we recommend near center
pulls on edge opposite of door hinge side
You may have to countersink screw heads to ensure hardware does not interfere with panels fitting flush with unit
doors.
Door Panel Dimensions
Models 315 and 315P
Door Panel Width (1/8" reveal) 15"
Door Panel Height (4" toe space,1/8" reveal) 303/8"
Door Panel Thickness
5
/8" min.
Door Panel Weight 15 lbs. max.
Opening Width (1/
8
" reveal) 15
1
/
4
"
Opening Height (4" toe space,1/8" reveal) 341/2"
CAUTION
Please exercise caution when drilling holes for
mounting hardware. This is especially critical with
inset panels.
Once you have located the proper position for the hardware, mark the holes, remove template, and drill pilot
holes for mounting of the hardware.We recommend starting the first few holes, positioning the hardware, drilling
remaining pilot holes, and securing the mounting brackets
with the #8 x 1/2" screws.
Install the door panel by engaging the tabbed bracket to
the door first and then sliding the hinge side hardware
over the positioning screws. You will have a 1/4" inch
adjustment, up and down, side to side, with this hardware.
Once you have the door in place, attach the remaining #8
x 1/2" screws to the hinge side mounting bracket and
install decorative caps.
11
INSTALLATION
Door Panel Installation
Door Panel–15 lb. weight limit
Remove the handle side bracket attached to the front of
the door and set aside.
Place the door panel lying face down on a protected surface to ensure the front is not scratched or damaged.
Position the plastic template provided flush with the upper
edge of the door. Be sure you are following the exact location for the RH or LH door position. See the following illustrations.
IMPORTANT NOTE: Remember you are viewing the door
panel from the back side in the illustrations. The overall
size of the panel shown is the minimum size necessary to
cover the door of the unit. The exact measurements of your
door panel may vary depending on the particular installation you are following.
CAUTION
Where the reveal on the hinge side of the door panel
is less than 1/4", and the panel has a square corner,
severe finger pinching or damage to the appliance
may occur.
Right-Hand Door Panel Left-Hand Door Panel
Lower Bracket
Top Edge of Door Panel
Drilling Template
Door Panel
Upper Bracket
Right Hand Swing
Left Hand Swing
Upper Bracket
Handle Side Bracket
Right Hand Sw
ing
Left Hand Sw
ing
Handle Side Bracket
CAUTION
B
e
fo
re
d
rillin
g
in
s
e
t p
a
n
e
ls
,
d
e
te
rm
in
e
fin
a
l p
la
c
e
m
e
n
t
s
o
s
c
r
e
w
s
fa
ll w
ith
in
ra
ils
o
r s
ty
le
s
.
Flush with Top and Side
of Panel
Template Positioning
Knock-out
12
Hinge Cover Installation
This is to be completed after the unit is fully installed.
IMPORTANT NOTE: Install the 90 degree stop prior to
installing the hinge covers.
1) Remove the backing paper of the adhesive pads and
bond to the hinge as shown in the illustration.
IMPORTANT NOTE: Hinges must be free of dirt or grease
before applying covers.
2) Install center covers as shown in the illustration (magnets will secure these covers).
IMPORTANT NOTE: It will be necessary to remove the
knock-out in this cover when the 90˚ door stop is used.
INSTALLATION
90 Degree Door Stop
Model 315 has a 90 degree door stop. Follow these steps
for installation:
1) Open door to 80 degrees.
2) Insert stop pin into the bottom door hinge (pin enters
from the top). Refer to the illustration below.
3) Pin must be driven until head has made contact with
the hinge body.
4) Insert stop pin into the top door hinge (pin enters from
the bottom).
5) Pin must be driven until head has made contact with
the hinge body.
6) Check for proper operation.
7) Install hinge covers if installation is complete.
Hinge Cover Installation
HIGH
LOW
NORMAL
OFF
Stop Pin
90 Degree Door Stop
13
INSTALLATION
Installation Check List
The importance of the installation of your Model 315 ice
maker cannot be overemphasized. The proper installation
of your unit is the responsibility of the selling dealer or
installer. The following check list should be completed by
the installer to ensure no part of the installation has been
overlooked.
Any questions or problems about your installation should
be directed to the selling dealer.
• Is the unit operating? If not, is unit plugged in? Check
to see if unit is operating before you install.
• Has the ice maker been properly uncrated, and have all
packing materials and tape been removed from inside
the bin?
• Have the installation instructions been followed,
including connecting the ice maker to water, drain and
electricity?
• Has the ice maker been leveled?
• Is kickplate /grille installed?
• Are panels installed properly?
• Does the customer understand the unit’s operation?
• Does the customer understand Sub-Zero’s "12-Year
Protection Plan" warranty?
Think Safety!
If you are storing or disposing of your old appliance, please
do it safely.
Child entrapment accidents can be tragic.
14
OPERATION
Initial Start Up
1) Remove control box cover.
2) Rotate timer shaft clockwise until the cam is in the
harvest position (switch button out).
3) Turn on water supply.
4) With unit plugged in, rotate ice maker control knob to
the ON position.
5) Allow the unit to operate for 1 hour, and check the
size of the cubes, if they are not correct, adjust as recommended on page 18.
6) After the cubes are confirmed to be the correct size,
replace all panels.
7) Locate the nameplate on the left sidewall of the reser-
voir.
Record the serial number and date of start up here in the
manual. Keep the manual handy for future reference.
Serial Number: ________________________________
Date of initial start up: __________________________
8) Fill out and mail the warranty registration.
Using Your Ice Maker
The ice maker is extremely simple to use, just turn the ice
maker control knob to the on position. The Model 315 will
automatically begin to freeze ice and will continue to do so
until the bin is full.
Use the scoop to remove ice and place the ice scoop in the
holder provided (do not leave the scoop on the ice, as it
will gradually disappear into the ice).
What to Expect from Your Ice
Maker
The Model 315 will release a batch of 8 ice cubes about
every 30 minutes. At the same time the cubes fall into the
storage bin, water will be entering the ice maker and
draining out.
ICE: The ice cubes are tapered cylinders about 1-1/4" in
diameter at the widest end; taper down to 1-inch wide at
the top; and are 1-1/8" high.When the ice maker is adjusted properly, there should be a 1/4" indent in the base of
the cube. The ice will appear wet when fresh, this is normal. It may also develop frost on the outside and look
cloudy, this is also normal (the frost will disappear when
liquid is poured over the ice).
STORAGE: All restaurant-type ice makers, such as the
Model 315, operate on this principal:The ice storage bin is
not refrigerated; instead it’s heavily insulated, much like a
picnic cooler or ice chest. If the ice bin were to be refrigerated, the ice would freeze together into one very large
cluster of ice, and would begin to evaporate. This would
yield ice that is very poor in quality,and difficult to remove
from the ice maker.
The Model 315 will continue to operate until ice builds up
high enough to contact the bin thermostat sensor tube,
then it will shut off. Models with a drain pump will occasionally pump out melt water when the ice maker is off.
The pump will only be on for a few seconds.
RUN TIME: The amount of time the Model 315 will run to
replace melted ice is about 2 hours per day.The amount of
time the ice maker will run to replace ice removed is
dependent upon how much is removed, how clean the ice
maker is,and how hot the air and water supplied to the ice
maker are.An empty ice maker will usually take about 2436 hours to re-fill.
15
OPERATION
Ice Production
There are two distinct cycles: freeze and harvest.
1 freeze cycle + 1 harvest cycle = 1 batch of 8 cubes.
The freeze cycle happens when water is sprayed against
the freezing surface. The harvest cycle is when the ice is
released and water enters the ice maker. A complete cycle
takes about 30 minutes.
FREEZE: During the freeze cycle the compressor is pumping refrigerant, the fan motor is blowing air, and the water
pump is circulating water. As the refrigerated surface
absorbs heat from the water sprayed against it, that heat
is moved to the area where the fan is blowing air. The heat
is transferred to the air, and the warmed up air is discharged from the ice maker. At the same time ice is forming on the refrigerated surface (located at the upper back
of the ice maker). When the refrigerated surface gets cold
enough, the ice maker’s timer will begin to turn. When it
turns far enough, it will stop the freeze cycle and begin the
harvest.
HARVEST: During the harvest cycle the compressor is still
operating, but the spray pump and fan motor have
stopped. Two other components have been energized; the
hot gas valve and the inlet water valve. These two valves
open and warm up the freezing surface,allowing the cubes
to fall into the bin. The timer is still turning, and when it
gets to the end of the harvest cycle, the freeze cycle will
restart.
How the Ice Maker Uses Water
The ice maker begins with a fixed charge of water that is
contained in the reservoir. As the water is sprayed against
the freezing surface, the part of water that does not contain mineral impurities will freeze and stick to the ice cup
molds. The water containing impurities falls back into the
reservoir. Gradually, during the freezing portion of the ice
making cycle, the water in the reservoir will become highly concentrated with mineral impurities.
During the harvest cycle fresh water flows into the ice
maker to dilute the reservoir water and to rinse the concentrated minerals down the drain.
16
Cleaning
IMPORTANT NOTE: Never keep anything in the ice storage bin that is not ice; objects like wine or beer bottles are
not only unsanitary,but the labels may slip off and plug up
the drain.
Never allow the ice maker to operate without regular
cleaning. The ice maker will last longer if it is kept clean.
Regular cleaning should happen at least once per year, and
preferably twice. Some water conditions will dictate even
more frequent cleaning of the ice making section, and
some carpets or pets will dictate more frequent cleaning of
the condenser.
Make sure that the outside cabinet and door, ice storage
bin, condenser, ice making system and ice scoop are kept
clean.
Cleaning the Exterior
If you have purchased a stainless steel model, use a soft,
non-abrasive stainless steel cleaner you may purchase
locally to wipe down the exterior. If you have difficulty
finding a good cleaner, try Signature Polish from Signature
Limited Laboratory, P.O. Box 13436, Dayton, Ohio 454130436; 877-376-5474.
Cleaning the Cabinet
Wipe off any spills on the surface of the door and handle
as they occur. If anything spilled on the door or gasket
dries onto the surface, wash with soap and warm water to
remove. Always remember to use a non-abrasive cloth or
pad.
Cleaning the Ice Storage Bin
The ice storage bin should be sanitized occasionally. It is
usually convenient to sanitize the bin after the ice making
system has been cleaned, and the storage bin is empty.
A sanitizing solution can be made of 1 ounce of household
bleach and two gallons of hot (95˚F - 115˚F) water. Use a
clean cloth and wipe the interior of the ice storage bin with
the sanitizing solution, pour some of the solution down the
drain. Allow to air dry.
Cleaning the Condenser
The condenser is like the radiator on a car, it has fins and
tubes that can become clogged. To clean:
1) Remove the kickplate/grille.
2) Locate the condenser surface.
3) Vacuum the surface, removing all dust and lint.
4) Replace the kickplate/grille.
ICE LEVEL CONTROL
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Condenser
CAUTION
Do not dent the fins.
WARNING
For maintenance and cleaning, we recommend that
the circuit breaker to the unit or the on/off control be
shut off.
Condenser Location
Cleaning
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Cleaning the Ice Making System
1) Open the door and turn the ice maker control knob to
off.
2) Scoop out all of the ice, either discard it or save it in a
ice chest or cooler.
3) Pour 4 ounces of Sub-Zero ice maker cleaner into the
ice maker reservoir. (Available from a local Sub-Zero
distributor or dealer, ask for part number 19034306,
an 8 ounce bottle).
4) Turn the ice maker control to ON.
5) Allow the ice maker to operate for about 2 hours.
6) Pour hot (95˚F - 115˚F) water into the bin to melt the
ice that has formed. That ice will likely be white and
frosty looking.
7) Clean the bin liner of mineral scale by mixing some ice
maker cleaner and hot water, and using that solution
to scrub the scale off of the liner.
8) Rinse the liner with hot water.
9) Sanitize the bin interior.
10) Replace the ice removed in step 2. The ice scoop
should be washed regularly, wash it just like any other
food container.
WARNING
Sub-Zero ice maker cleaner contains acids.These compounds may cause burns.
If swallowed, DO NOT induce vomiting. Give large
amounts of water or milk. Call Physician immediately.
In case of skin contact, flush with water. Keep out of
the reach of children.
ICE LEVEL CONTROL
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Icemaker Control Knob
Ice Maker Control Knob
Cleaning
ADJUSTMENTS
There are three items that may be adjusted: cube size, bin
ice level and harvest time.
IMPORTANT NOTE: Cube size and harvest time adjustments should only be done by a qualified service person.
Cube Size Adjustment
The cube size control should only be adjusted to bring the
cubes to the correct shape, the overall size cannot be
adjusted. Try to adjust the cube size control when the ice
maker is in the harvest cycle, or in the first 10 minutes of
the freeze cycle.
1) Open the door and remove the control box cover.
2) Locate the cube size adjustment screw, and to make
fuller cubes, turn the screw clockwise about 1/4 turn.
This will make the freezing cycle longer.
3) To shorten the freezing cycle and make cubes that are
not as full, turn the adjustment screw 1/4 turn counterclockwise.
4) After the next freezing cycle, the cubes should have
responded to the adjustment, if another adjustment is
required, do it early in the freeze cycle.
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Cube Size Adjustment
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Winterizing
1) Clean the ice making system.
2) Turn off the water supply.
3) Drain the water reservoir. Remove the pump hose.
4) Disconnect the incoming water line at the inlet water
valve.
5) Remove control box cover and turn the timer into the
harvest cycle.
6) With the ice maker operating, blow air through the
inlet water valve; a tire pump could do the job.
7) Drain pump models should have about 1/2 gallon of
RV antifreeze (propylene glycol) poured into the ice
storage bin drain.
IMPORTANT NOTE: Automotive antifreeze must NOT be
used.
8) Replace control box cover. Switch off and unplug the
ice maker.
NOTE: To use after winterizing, reconnect pump hose and
water line. Repeat the initial start up on page 14.
Cube Size Adjustment
Maintenance
1919
ADJUSTMENTS
Bin Ice Level Adjustment
When the ice maker shuts off the ice level in the bin should
be even with the metal tube inside the bin. If the ice in the
bin is too high or low, turn the ice maker control knob to
adjust the bin thermostat.
1) To lower the ice level, turn the knob counterclockwise.
Usually a 1/8 turn will be enough.
2) To increase the ice level, turn the knob clockwise.
Usually a 1/8 turn will be enough.
Harvest Time Adjustment
The amount of harvest time may be adjusted. It is preset
from the factory at about 3 minutes, which should be adequate to release all cubes and fill the reservoir. If the timer
needs to be adjusted:
1) Unplug or disconnect the electrical power.
2) Remove the kickplate.
3) Remove the control box cover.
4) Locate the timer, and loosen the set screw that holds
the two halves of the timer cam together.
5) Rotate one half of the cam to open or close the lower
portion of the cam. More of an opening equals more
harvest time and less of an opening means less harvest time.
6) Tighten the set-screw.
7) Replace the control box cover and kickplate.
8) Reconnect the electrical power.
ICE LEVEL CONTROL
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Icemaker Control Knob
WARNING
Electrical Shock Hazard
Disconnect electrical power before beginning removal
of parts.
Ice Maker Control Knob
Harvest Time Adjustment
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TROUBLESHOOTING
Problem Possible Cause Probable Correction
The ice maker does not operate The ice maker is unplugged Plug the ice maker in
Breaker tripped or fuse is blown Reset breaker/replace fuse – if it happens again,
call for service to check for a short circuit in the
ice maker
Ice maker control turned to OFF Turn ice maker control to ON
Bin thermostat open, keeping Ice on sensor tube – its then
ice maker off normal for the ice maker to be off
Ice maker in a room below 50˚F – room needs
to be warmer for ice maker to operate.
Bin thermostat stuck open, needs to be replaced.
Timer contacts open Replace timer
Cubes are too big Cube size control set too cold Adjust cube size control for a smaller cube
Cubes are too small Cube size control set too warm Adjust cube size control for a larger cube
Not enough water Check water supply – filter may be restricted
Check inlet water valve – inlet screen may be
restricted
Cube size control stuck closed – Replace timer
timer runs all the time.
Cubes are partially formed – Spray jets partially clogged Clean ice making system with ice maker
have ragged sides cleaner.
Ice maker makes ice, but bin The bin should fill up and the Clean the condenser.
does not fill up with ice ice maker shut off in 24-36 hours.
If not, the condenser may be dirty
The bin drain may be partially Clean out the drain, check the installation.
restricted
The air flow to the ice maker Check the installation – the ice maker must be
may be obstructed free of obstructions at the kickplate.
Cubes are partially formed – Not enough water in the reservoir. Check water supply – filter may be restricted
are white at the bottom
Check inlet water valve - inlet screen may be
restricted.
Check for a water leak at the reservoir.
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TROUBLESHOOTING
Problem Possible Cause Probable Correction
No ice falling in bin, but Ice may be stuck in the Check water supply – filter may be restricted
ice maker operates evaporator and the unit is
"frozen up"
Check inlet water valve – screen may be
restricted, or valve does not operate
Hot gas valve may not operate -check and
repair/replace
Harvest time set too short – timer needs
adjustment
Too much heat load Inlet water valve leaks through, needs to be
replaced
No water spray Water pump does not work, replace it
Water leak from reservoir, locate and repair
Cube size control will not close See "Too much heat load" or "not enough
refrigerant"
Control defective - must be replaced
No airflow Fan motor not turning, needs to be replaced
Fan blade broken, needs to be replaced
Condenser completely blocked up, needs cleaning
Not enough refrigerant Add low side access valve, locate leak, recover
refrigerant, repair, replace dryer, evacuate and
weigh in the nameplate charge
Restricted system Add low side access valve, recover refrigerant,
replace dryer, evacuate and weigh in the
nameplate charge
Hot gas valve leaks through Add low side access valve, recover refrigerant,
replace hot gas valve and dryer, evacuate and
weigh in the nameplate charge
Compressor will not operate or Start relay or capacitor needs to be replaced
pumps poorly.
Add low side access valve, recover refrigerant,
replace compressor and dryer, evacuate and
weigh in the nameplate charge.
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WARRANTY
"Sub-Zero Protection Plan"
Full 5 Year Warranty and Limited 6th Through 12th Year Warranty
on the Sealed System
Full 2 Year Warranty on Total Product
Full Five Year Warranty
For five years from the date of original installation, your Sub-Zero warranty covers all parts and labor to repair or
replace any components that prove to be defective in materials or workmanship in the sealed system. The sealed
system consists of the compressor, condenser, evaporator, drier and all connecting tubing.
Full Two Year Warranty
For two years from the date of original installation, your Sub-Zero warranty covers all parts and labor to repair or
replace any part of the product which proves to be defective in materials or workmanship.
Limited 6th Through 12th Year Warranty
From the 6th through the 12th year from the date of original installation, your Sub-Zero warranty covers all parts
that prove to be defective in materials or workmanship in the sealed system (parts only). The sealed system consists
of the compressor, condenser, evaporator, drier and all connecting tubing.
Terms Applicable To Each Warranty
All service provided by Sub-Zero under the above warranty must be performed by authorized Sub-Zero service rep-
resentatives, unless otherwise specified by Sub-Zero. Service will be provided in the home during the normal busi-
ness hours. This warranty applies only to products installed for normal residential use. Details regarding a non-resi-
dential warranty are available upon request.
The warranty applies only to products installed in any one of the fifty states of the United States, the District of
Columbia or the ten provinces of Canada. This warranty does not cover any parts or labor to correct any defect
caused by negligence, accident or improper use, maintenance, installation, service or repair, including but not limit-
ed to improper removal and reinstallation (whether in the unit or at a remote location) of the condensing unit.
The remedies described above for each warranty are the only ones which Sub-Zero will provide, either under
these warranties or under any warranty arising by operation of law. Sub-Zero will not be responsible for any
consequential or incidental damages arising from the breach of these warranties or any other warranties,
whether express, implied or statutory.
Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation
or exclusion may not apply to you. This warranty gives you specific legal rights and you may also have other legal
rights which vary from state to state.
To receive parts and/or service and the name of the Sub-Zero authorized service representative nearest you, contact
your Sub-Zero dealer or distributor or contact Sub-Zero Freezer Company, Customer Service Department,
P.O. Box 44130, Madison, Wisconsin, 53744-4130, call (800) 222-7820 or e-mail us at
customerservice@subzero.com.
SERVICE
Service For Your Ice Maker
Please have model and serial number available. Contact
your nearest Sub-Zero Factory Authorized Service Center in
your area, your dealer or Sub-Zero Freezer Company, P.O.
Box 44130, Madison, WI 53744-4130, call (800) 222-7820
or e-mail us at customerservice@subzero.com.
For installation questions or general product operating
information call (800) 222-7820 for your local product distributor or Sub-Zero.
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Sub-Zero Freezer Company, Inc.
4717 Hammersley Road
Madison, Wisconsin 53711
(800) 222-7820
(608) 271-2233
E-mail: customerservice@subzero.com
315IO 3/03
®
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