Sub-Zero Wolf 400 Series User manual

Component Access & Removal 61
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400
Service Manual

Page 2
400 Series
400 Series
Component Access and Removal
6-2
COMPONENT ACCESS AND REMOVAL:
This section explains how to access and remove components on / in a 400 Series unit. Due to the diversity of the
400 Series, this section is divided into three sub-sections with the model 424 being covered first, followed by the
models 427 and 427R, and the third sub-section covers the model 430. In each of the three sub-sections you will
find access and removal instructions for the external cosmetic and mechanical components, followed by the interior
cosmetic components, the interior mechanical components and the sealed system components.
Before continuing, please take note of the WARNINGS and CAUTIONS below.
IF IT IS NECESSARYTO REMOVE AUNIT FROM ITS INSTALLATION, REMEMBER THAT THE UNIT COULD
TIP FORWARD WHEN PULLED FORWARD, BEYOND THE ANTI-TIP COMPONENTS, RESULTING IN SERIOUS
INJURYOR DEATH. PULLING AUNIT FROM ITS INSTALLATION SHOULD ONLYBE PERFORMED BY AN
AUTHORIZED SERVICE TECHNICIAN OR INSTALLER.
TOAVOID ELECTRIC SHOCK, POWER TO THE UNIT MUST BE DISCONNECTED WHENEVER ACCESSING
AND/OR REMOVING COMPONENTS POWERED BY ELECTRICITY OR COMPONENTS NEAR OTHER ELEC-
TRICAL COMPONENTS.
When removing or disconnecting door closers and/or hInge assemblies, remember they are spring loaded
and may recoil quickly when released.
To avoid static electric damage to the control board, always handle the board by the edges.
When working in the compressor area, remember that compressor and tubing could be hot.
When working on or around evaporator or condenser, remember evaporator and condenser fins are sharp.
WHEN REMOVING ADOOR FROM AUNIT, REMEMBER THAT DOORS ARE HEAVY. IF ADOOR WERE TO
FALL , IT COULD CAUSE SERIOUS PERSONAL INJURY.

Page 3
400 Series
400 Series Component Access and Removal
6-3
MODEL 424
MODEL 424 EXTERIOR COSMETIC AND MECHANICAL COMPONENT REMOVAL:
An attempt has been made to arrange these instructions in such a way as to simulate which components would
need to be removed first in order to gain access to other components. When following a component removal proce-
dure, it may be necessary to reference another removal procedure towards the front of this section.
Figure 6-1. Kickplate Removal
Kickplate
Kickplate
Mounting
Screw
(1 of 2)
Figure 6-2. Door Closer Removal
Door Closer
Hinge Pin
Kickplate Removal (Model 424)
To remove the kickplate, extract the mounting screws
located at each end of the kickplate and pull the kick-
plate forward. (See Figure 6-1)
Door Closer Removal (Model 424)
NOTE: See DOOR CLOSER CAUTION at beginning of
this section.
To remove the door closer you will need to pull the unit
approximately 6" out of the rough-in opening. (See TIP-
PING WARNING at beginning of this section)
NOTE: If removing a model 424 from its installation, an
anti-tip bracket and a countertop bracket may have
been used to make a solid installation. (See Figures 2-2
insection 2) If the brackets were not used, shims may
have been wedged along the sides and top.
After pulling the unit from its installation, extract the two
mounting screws securing the door closer to the side of
unit base. Then, slide the door closer down off of the
bottom door hinge pin. (See Figure 6-2)
NOTE: It may be necessary to lean the unit back
slightly to create enough clearance between the hinge
pin and the floor.
NOTE: When reinstalling a door closer on a model 424
keep in mind that there are slots in the cam of the door
closer that must line-up with the ribs on the hinge pin.
Also, the cams may be in "full-closed position" or "full -
open position." It is easiest to install a door closer onto
the hinge pin with the door closed and the cams in the
"full-open position." Then, after the closer is on the
hinge pin, rotate the closer to the closed position and
install the screws.

Page 4
400 Series
400 Series
Component Access and Removal
6-4
Door Removal (Model 424)
To remove the door you will need to pull the unit
approximately 6" out of the rough-in opening and
remove the door closer first. (See TIPPING WARNING
at beginning of this section)
NOTE: If removing a model 424 from its installation, an
anti-tip bracket and a countertop bracket may have
been used to make a solid installation. (See Figures 2-
2) If the brackets were not used, shims may have been
wedged along the sides and top.
After removing the door closer, open the door and
extract the two screws from the top door hinge. (See
figure 6-3) Lean the door away from the unit slightly
and lift the door out of the bottom cabinet hinge.
Light and Fan Switch access and Removal
(Model 424)
The light and fan switches are attached to a switch
bracket, and covered by a switch guard. The switch
bracket and guard are held in place by two Phillips
head screws that pass up through holes in the switch
bracket and slots in the switch guard on the backside.
NOTE: See ELECTRIC SHOCK WARNING at begin-
ning of this section.
To access and remove a fan or light switch, extract the
two phillips head screws on the backside of the switch
bracket, using an offset Phillips screwdriver. (See
Figure 6-4) Pull the switch guard and bracket forward.
Disconnect the electrical leads from the switch being
removed. Depress the tabs on the side of the switch
being removed and push the switch out of the bracket.
Figure 6-3. Top Door Hinge
Figure 6-4. Light and Fan Switch
Door Hinge Screw
Use 90° offset Phillips-head
screwdriver to reach screws

Page 5
400 Series
400 Series Component Access and Removal
6-5
Exterior Wrap Components (Model 424FS ONLY)
Stainless Steel Base Cover Assemblies - The base
cover assemblies are stuck to the sides of the unit base
with double-stick tape. Screws passing through the
ends of the kickplate and the base cover front flanges
secure the kickplate and covers to the unit base. On
the hinge side of the unit, screws pass through the door
closer bracket and the base cover into the door closer
mounting holes in then unit base.
To remove the base cover assemblies, first remove the
kickplate. If a door closer is mounted on the side of the
base cover being removed, remove the door closer too.
Then, at the back of the unit, insert a flat-blade screw-
driver between the base cover and unit base and pry
the base cover off. (See Figure 6-5)
Stainless Steel Overlay Unit Wrap - There are
brackets riveted at the front of the top and sides of the
unit. Flanges at the front of the unit wrap hook over
these brackets. Brackets at the back of the unit hook
under the back flanges of the unit wrap. When the
mounting screws are tightened down on the back
brackets, the brackets pull the wrap backward, which
holds the wrap tight between the front and back brack-
ets.
To remove the unit wrap, extract the back bracket
mounting screws and remove the back brackets, then
shide the wrap forward to disengage the front brackets
and lift the wrap up and off of the unit. (See Figure 6-6)
Kickplate
Door Closer
Base Cover
Figure 6-5. Base Cover Removal
Figure 6-6. SS Unit Wrap Removal
Slide SS
Overlay Unit
Wrap for-
ward, then
lift up
Front Brackets
Remove
Back
Brackets

Page 6
400 Series
400 Series
Component Access and Removal
6-6
Condenser Fan Assembly Access and Removal
(Model 424)
To access the condenser fan, the unit will need to be
pulled from its installation. (See TIPPING WARNING at
beginning of this section.)
NOTE: If removing a model 424 from its installation, an
anti-tip bracket and a countertop bracket may have
been used to make a solid installation. (See Figures 2-
2) If the brackets were not used, shims may have been
wedged along the sides and top.
Remove the access panel from the bottom back of the
unit, disconnect the fan electrical leads, and extract the
grounding screw from the ground wire.
The condenser fan bracket is secured to the unit tray by
screws passing up from under the unit tray into thread-
ed stand-offs. (See figure 6-7) Lean the unit to the
front or side and extract the bracket mounting screws
and lift fan assembly from the unit tray.
The fan motor can now be removed from the fan brack-
et by extracting the fan mounting screws. The fan
blade can be removed from the fan motor by turning the
flat-nut on the fan motor shaft counterclockwise, then
pull the blade from the shaft.
Refrigerant Valve Solenoid Access and Removal
(Model 424)
To access the refrigerant valve solenoids, the unit will
need to be pulled from its installation. (See TIPPING
WARNING at beginning of this section.)
NOTE: If removing a model 424 from its installation, an
anti-tip bracket and a countertop bracket may have
been used to make a solid installation. (See Figures 2-
2) If the brackets were not used, shims may have been
wedged along the sides and top.
Remove the access panel from the bottom back of the
unit. Remove the door closer (See DOOR CLOSER
WARNING at beginning of this section.) Extract the
four screws securing the unit tray to the cabinet on the
left side, and loosen the four screws on the right side.
Separate the unit tray from the cabinet by leaning the
cabinet to the right, then insert a spacer between the
cabinet and unit tray. (A small piece of 2x4 lumber
works well.) (See Figure 6-8) Disconnect the electrical
leads to the solenoid being removed. (See ELECTRI-
CAL SHOCK WARNING at beginning of this section.)
The solenoid is secured to the refrigerant valve with a
screw at the top. Remove the screw and lift the sole-
noid up off the valve.
Figure 6-7. Condenser Fan Assembly
Figure 6-8. Unit Tray Component Access
Screws
Ground Screw
Condenser
Fan Assembly
Loosen Screws
on this side
Remove Screws
on this side

Page 7
400 Series
400 Series Component Access and Removal
6-7
Figure 6-9. Wine Rack Assembly Removal
Figure 6-10. Cabinet Slide, Slide Support
Spacer & Slide Spacer Removal
Figure 6-11. Upper Light Strip Removal
MODEL 424 INTERIOR COSMETIC
COMPONENT ACCESS AND REMOVAL
An attempt has been made to arrange these instruc-
tions in such a way as to simulate which components
would need to be removed first in order to gain access
to other components. When following a component
removal procedure, it may be necessary to reference
another removal procedure towards the front of this
section.
Wine Rack Assembly Removal (Model 424)
To remove a wine rack assembly, pull the rack forward
until it stops. Remove any wine bottles on the rack.
Now, lift the front of the rack up while pulling forward.
After the indentations on the wine rack clear the rollers
on the cabinet slides, lower the front of the wine rack
while continuing to pull forward, then lift the rear of the
rack up and out. (See Figure 6-9)
Cabinet Slide, Slide Spacer and Slide Support
Spacer Removal (Model 424)
Cabinet slides are attached to the side walls of the wine
compartments with screws. If the cabinet slide is
attached to the handle side of the compartment, a small
plastic slide spacer is placed between the front of the
slide and the side wall. If the cabinet slide is attached
to the handle side, a wide plastic slide support spacer is
placed between the slide and the wall.
To remove a cabinet slide, you must first remove the
wine rack. Then, extract the Phillips head cabinet slide
mounting screws and pull the cabinet slide and slide
spacer or slide support spacer from the wall. (See
Figure 6-10)
Upper Light Strip Access and Removal (Model 424)
NOTE: See ELECTRIC SHOCK WARNING at begin-
ning of this section.
The light strip is held in the channel of the light strip
housing. To remove the upper light strip, remove the
top wine rack assembly first. Then, extract the two light
strip housing mounting screws securing the housing to
the ceiling. Lower the light strip housing down, discon-
nect the light strip electrical leads and extract the screw
securing the ground wire to the housing. Now, slide the
light strip out the end of the channel. (See Figure 6-11)
NOTE: When reinstalling the light strip housing, care
must be taken to ensure that all wire leads are tucked
back behind the light strip housing before resecuring it
to the ceiling.
Lift front while pulling forward.
After indentations clear rollers,
lower front, pull forward, lift rear.
Slide Support Spacer
Slide
Screws
Slide light strip out
end of the channel.
Channel
Light Strip
Light Strip Housing
Slide Spacer

Page 8
400 Series
400 Series
Component Access and Removal
6-8
Upper and Lower Evaporator Fan Cover Access and
Removal (Model 424)
There are two access holes in the front of the evapora-
tor fan cover. The back flanges of the evaporator fan
cover have slots that line up with the access holes.
Screws inside these access holes pass through slots in
the back flanges and through holes in the evaporator
cover into screw grommets, securing the fan cover.
To remove the evaporator fan cover, extract the two
mounting screws from the access holes and pull the fan
cover forward. (See Figure 6-12)
NOTE: When reinstalling the fan cover, first insert one
of the two mounting screws through the evaporator
cover, into the screw grommet, but do not fully tighten.
Then, slide the corresponding slot in the rear flange of
the fan cover over the screw and rotate the fan cover
up until the other access hole lines up with the other
mounting hole. Insert the second screw and tighten
both screws.
Upper Evaporator Cover Removal (Model 424)
To remove the upper evaporator cover, first remove the
two wine racks and all cabinet slides, cabinet slide
spacers and cabinet slide support spacers in the upper
compartment. Then, remove the evaporator fan cover
mounting screws and the evaporator fan cover. Pull the
evaporator cover forward slightly. Push the thermistor
leads and grommet out of the slot on the left-hand side
of the evaporator cover. There is a ground wire riveted
to the back of the evaporator cover, and the other end
of the ground wire has a screw securing it to the rear
wall. Extract the ground screw and pull the evaporator
cover out. (See Figures 6-12 & 6-13)
NOTE: When reinstalling the evaporator cover, the
ground wire must be reattached to the rear wall with the
ground screw .
Lower Evaporator Cover Removal (Model 424)
To remove the lower evaporator cover, first remove the
three wine racks in the lower compartment. Then,
remove the evaporator fan cover mounting screws and
the evaporator fan cover. Pull the top of the evaporator
cover forward and lift off of pegs at bottom. You'll find
a ground wire riveted to the back of the evaporator
cover, and the other end has a screw securing it to the
rear wall. Extract the ground screw and pull the evapo-
rator cover out. (See Figures 6-12, 6-13 & 6-14)
NOTE: When reinstalling the evaporator cover, the
ground wire must be reattached to the rear wall with the
ground screw .
Figure 6-12. Evap Fan Cover Removal
Figure 6-13.
Ground Screw Wire & Screw
Figure 6-14.
Lower Evaporator Cover Removal
Evaporator Fan Cover
Screw Access Hole
Evaporator Cover
Ground Screw
Evaporator Cover
Mounting Screw
Pull top of evap
cover forward and
lift off of pegs
Lower Evap
Cover Peg

Page 9
400 Series
400 Series Component Access and Removal
6-9
Evaporator Support Cover Access and Removal
(Model 424)
The evaporator support covers are narrow covers to the
left and right of the lower evaporator cover. The left
cover hides the upper compartment drain line and the
right cover is over the evaporator thermistor. These
covers are held in place by screws under the lower
evaporator cover.
To remove the evaporator support covers, you must first
remove the three wine racks, all cabinet slides, cabinet
slide spacers and cabinet slide support spacers in the
lower compartment. Then, remove the evaporator fan
cover mounting screws, the evaporator fan cover and
the lower evaporator cover. Extract the evaporator sup-
port cover mounting screws and pull the evaporator
support cover out. (See Figure 6-15) Figure 6-15.
Evaporator Support Cover Removal
MODEL 424 INTERIOR MECHANICAL
COMPONENT ACCESS AND REMOVAL:
An attempt has been made to arrange these instruc-
tions in such a way as to simulate which components
would need to be removed first in order to gain access
to other components. When following a component
removal procedure, it may be necessary to reference
another removal procedure towards the front of this
section.
Control Board Access and Removal (Model 424)
NOTE: See ELECTRIC SHOCK WARNING at begin-
ning of this section. Also see STATIC ELECTRICITY
CAUTION at beginning of this section.
The control board is located on the bottom side of the
compartment divider, directly behind the control panel,
and is concealed by an access panel. The control
board is held in place by four tabs, one at each corner
of the board.
To get to the control board you will need to extract the
two screws at the back of the access panel, then lower
the back of the access panel and pull it towards the
rear of the unit. (See Figure 6-16)
To remove the control board, disconnect the LED ribbon
cable, the membrane switch ribbon cable, and all other
electrical leads attached to the control board. Expand
the tabs to release the control board, then pull down
and out. (See Figure 6-17)
NOTE: When re-connecting electrical leads to the con-
trol board, be sure the the silver area on the membrane
switch ribbon cable terminal is facing away from the
control board.
Figure 6-16. Control Board Access Panel
Figure 6-17. Control Board
Evaporator Support Covers
Mounting screws
concealed by
evaporator cover
Tab
LED Ribbon Cable
Membrane
Switch
Ribbon Cable
Electrical
Connections
Tab
Tab
Tab
Access Panel

Page 10
400 Series
400 Series
Component Access and Removal
6-10
Control Panel Assembly Removal (Model 424)
NOTE: See ELECTRIC SHOCK WARNING at begin-
ning of this section.
The control panel assembly is set at the front of the
compartment divider and is secured by six screws at
the bottom, and a silicone seal under the top flange.
Tabs at the bottom and a concealed tab at the top cen-
ter of the control panel housing help to position the con-
trol panel assembly.
To remove the control panel assembly, first access the
control board and disconnect the LED ribbon cable and
the membrane switch ribbon cable. Then, extract the
six screws at the bottom of the control panel. Now,
slide the blade of a putty knife under and along the top
flange of the control panel housing to break loose the
silicone seal. (See Figure 6-18)
NOTE: Do not lift the top flange of the control panel
housing too vigorously. Doing so will break the con-
cealed tab at the top center.
After breaking the silicone seal loose, pull the control
panel assembly forward and out.
NOTE: When reinstalling the control panel assembly,
you must reapply a bead of silicone along the inside of
the top flange.
Upper Compartment Thermistor Access and
Removal (Model 424)
NOTE: See ELECTRIC SHOCK WARNING at begin-
ning of this section.
The upper compartment thermistor is attached to the
left side wall with a Phillips-head screw. The electrical
leads of the thermistor are routed through a notch in the
left-hand side of the evaporator cover and guarded by a
wire grommet.
To remove the upper compartment thermistor, first
remove the two wine racks, all cabinet slides, cabinet
slide spacers and cabinet slide support spacers in the
upper compartment. Then, remove the evaporator fan
cover mounting screws and the evaporator fan cover.
Pull the evaporator cover out while pushing the thermis-
tor leads and grommet out of the slot on the left-hand
side of the evaporator cover. Then disconnect the ther-
mistor electrical leads and extract the thermistor mount-
ing screw. (See Figure 6-19)
Lower Compartment Thermistor Access and
Removal (Model 424)
NOTE: See ELECTRIC SHOCK WARNING at begin-
ning of this section.
The lower compartment thermistor is attached to the left
side wall with a Phillips-head screw. The electrical
leads of the thermistor are routed through a notch in the
left-hand evaporator support cover and guarded by a
grommet. (See Figure 6-20)
To remove the lower compartment thermistor, first
remove the three wine racks, all cabinet slides, cabinet
slide spacers and cabinet slide support spacers in the
lower compartment. Then, remove the evaporator fan
cover mounting screws, the evaporator fan cover and
the lower evaporator cover. Extract the evaporator sup-
port cover mounting screws and pull the evaporator
support cover out while pushing the thermistor leads
and grommet out of the slot on the left-hand side.
Extract thermistor mounting screw and disconnect the
thermistor electrical leads.
Figure 6-18.
Control Panel Assembly Removal
Figure 6-19.
Upper Compartment Thermistor
Figure 6-20.
Lower Compartment Thermistor
Control Panel Assembly
Putty Knife
Screws (6)
Do not break
concealed tab
Thermistor
Evap Cover
Screw
Slide
Grommet & Slot
Slide
Thermistor
Screw
Grommet & Slot
Evap Support Cover
Evap Cover

Page 11
400 Series
400 Series Component Access and Removal
6-11
Upper Evaporator Thermistor Access and Removal
(Model 424)
NOTE: See ELECTRIC SHOCK WARNING at begin-
ning of this section.
The upper evaporator thermistor is attached to the right
side evaporator bracket with a Phillips-head screw.
To remove the upper evaporator thermistor, first remove
the two wine racks, all cabinet slides, cabinet slide
spacers and cabinet slide support spacers in the upper
compartment. Then, remove the evaporator fan cover
mounting screws, the evaporator fan cover and the
evaporator cover. Extract the screw from the thermis-
tor, and the screw from the P-clamp holding the ther-
mistor electrical leads. Now, disconnect the thermistor
electrical leads. (See Figure 6-21)
Lower Evaporator Thermistor Access and Removal
(Model 424)
NOTE: See ELECTRIC SHOCK WARNING at begin-
ning of this section.
The lower evaporator thermistor is attached to the right
side evaporator bracket with a Phillips-head screw.
To remove the lower evaporator thermistor, first remove
the three wine racks in the lower compartment. Then,
remove the evaporator fan cover mounting screws, the
evaporator fan cover and the lower evaporator cover.
Extract the mounting screws from the right side evapo-
rator support cover and pull the evaporator support
cover out. Extract the screw from the thermistor, and
the screw from the P-clamp holding the thermistor elec-
trical leads. Now, disconnect the thermistor electrical
leads. (See Figure 6-22)
Upper Evaporator Fan Assembly Access and
Removal (Model 424)
NOTE: See ELECTRIC SHOCK WARNING at begin-
ning of this section.
The upper evaporator fan assembly is attached to the
rear wall by four Phillips-head screws.
To remove the upper evaporator fan assembly, first
remove the two wine racks, all cabinet slides, cabinet
slide spacers and cabinet slide support spacers in the
upper compartment. Then, remove the evaporator fan
cover mounting screws, the evaporator fan cover and
the evaporator cover. Pull the fan blade from the fan
motor shaft. Extract the screw from the P-clamp hold-
ing the fan wires. Then remove the four screws from
the fan bracket and disconnect the fan motor electrical
leads. (See Figure 6-22)
Figure 6-21. Evaporator Thermistor
Figure 6-22. Evaporator Fan Assembly
Lower Evaporator Fan Assembly Access and
Removal (Model 424)
NOTE: See ELECTRIC SHOCK WARNING at begin-
ning of this section.
The lower evaporator fan assembly is attached to the
rear wall by four Phillips-head screws.
To remove the lower evaporator fan assembly, first
remove the three wine racks, all cabinet slides, cabinet
slide spacers and cabinet slide support spacers in the
lower compartment. Then, remove the evaporator fan
cover mounting screws, the evaporator fan cover and
the lower evaporator cover. Pull the fan blade from the
fan motor shaft. Extract the screw from the P-clamp
holding the fan wires. Then remove the four screws
from the fan bracket and disconnect the fan motor elec-
trical leads. (See Figure 6-22)
Thermistor
Screw & P-Clamp
Evaporator
Fan Motor
Fan Bracket
Motor Mounting
Screws
Bracket Mounting Screws
Fan Blade

Page 12
400 Series
400 Series
Component Access and Removal
6-12
Figure 6-23. Evaporator
Figure 6-24. Suction “T” Connection
Heat Exchangers
“T” Connection
(Under cabinet)
MODEL 424 SEALED SYSTEM
COMPONENT ACCESS AND REMOVAL:
An attempt has been made to arrange these instruc-
tions in such a way as to simulate which components
would need to be removed first in order to gain access
to other components. When following a component
removal procedure, it may be necessary to reference
another removal procedure towards the front of this
section.
NOTE: To access and remove any sealed system
component on a Model 424, the unit will need to be
pulled from its installation. See TIPPING WARNING at
beginning of this section. If removing a model 424
from its installation, an anti-tip bracket and a countertop
bracket may have been used to make a solid installa-
tion. (See Figures 2-2) If the brackets were not used,
shims may have been wedged along the sides and top.
Also see HOT COMPRESSOR & TUBING CAUTION
and SHARP FINS CAUTION at beginning of this sec-
tion.
NOTE: Always replace the filter-drier when servicing
the sealed system.
Upper Evaporator Assembly Access and Removal
(Model 424)
The evaporator assembly consists of the evaporator
and heat exchanger. The evaporator is mounted to the
rear wall with Phillips-head screws, and the heat
exchanger is routed out the back wall down to the unit
tray where the capillary tube is attached to the refriger-
ant valve, and the suction line is attached to a "T" con-
nection that runs to the compressor suction port. (See
Figures 6-23, 6-24, 6-25)
After evacuating the refrigerant from the sealed system,
begin the access and removal procedure inside the unit
by removing the two wine racks, all cabinet slides, cabi-
net slide spacers and cabinet slide support spacers in
the upper compartment. Then, remove the evaporator
fan cover mounting screws, the evaporator fan cover
and the evaporator cover. Extract the evaporator
mounting screws. Now, remove the access panel from
the bottom back of the unit and the heat exchanger
duct cover. Remove the door closer (See DOOR
CLOSER WARNING at beginning of this section.)
Extract the four screws securing the unit tray to the
cabinet on the left side, and loosen the four screws on
the right side. Separate the unit tray from the cabinet
by leaning the cabinet to the right, then insert a spacer
between the cabinet and unit tray. (A small piece of
2x4 lumber works well.) (See Figure 6-8) Cut the cap
tube from the outlet port of the refrigerant valve and cut
the suction line from the "T" connector. Then, pull the
evaporator assembly from the front of the unit.
Evaporator
Assembly
(Includes Heat
Exchanger)

Page 13
400 Series
400 Series Component Access and Removal
6-13
Figure 6-25. Capillary Tube, Refrigerant
Valve, Filter-Drier
Dual Outlet Filter Drier
Refrigerant Valves
Capillary Tubes
Valve Brackets
P-Clamp
Screw
Lower Evaporator Assembly Access and Removal
(Model 424)
The evaporator assembly consists of the evaporator
and heat exchanger. The evaporator is mounted to the
rear wall with Phillips-head screws, and the heat
exchanger is routed out the back wall down to the unit
tray where the capillary tube is attached to the refriger-
ant valve, and the suction line is attached to a "T" con-
nection that runs to the compressor suction port. (See
Figures 6-23, 6-24, 6-25)
After evacuating the refrigerant from the sealed system,
begin the access and removal procedure inside the unit
by removing the three wine racks, all cabinet slides,
cabinet slide spacers and cabinet slide support spacers
in the lower compartment. Then, remove the evapora-
tor fan cover mounting screws, the evaporator fan
cover, the evaporator cover and the evaporator support
covers. Extract the evaporator mounting screws. Now,
remove the access panel from the bottom back of the
unit. Remove the door closer (See DOOR CLOSER
WARNING at beginning of this section.) Extract the
four screws securing the unit tray to the cabinet on the
left side, and loosen the four screws on the right side.
Separate the unit tray from the cabinet by leaning the
cabinet to the right, then insert a spacer between the
cabinet and unit tray. (A small piece of 2x4 lumber
works well.) (See Figure 6-8) Cut the cap tube from
the outlet port of the refrigerant valve and cut the suc-
tion line from the "T" connector. Then, pull the evapora-
tor assembly from the front of the unit.
Refrigerant valve access and removal (Model 424)
The refrigerant valves are attached to the valve brack-
ets with screws and tube clamps, at the back left of the
unit tray. (See Figure 6-25) The upper compartment
valve is the farthest left.
After evacuating the refrigerant from the sealed system,
begin the access and removal procedure by removing
the access panel from the bottom back of the unit.
Remove the door closer (See DOOR CLOSER WARN-
ING at beginning of this section.) Extract the four
screws securing the unit tray to the cabinet on the left
side, and loosen the four screws on the right side.
Separate the unit tray from the cabinet by leaning the
cabinet to the right, then insert a spacer between the
cabinet and unit tray. (A small piece of 2x4 lumber
works well.) (See Figure 6-8) Remove the screws
securing the valve to the valve bracket and pull the
valve upward slightly. Cut the cap tube from the outlet
port of the refrigerant valve and cut the filter-drier stub
from the inlet port of the valve.
Filter-Drier Access and Removal (Model 424)
The filter-drier is located on the left-hand side of the unit
tray. The filter-drier used on the 400 Series has dual
outlet ports that connect to both refrigerant valves.
(See Figure 6-25)
After evacuating the refrigerant from the sealed system,
begin the access and removal procedure by removing
the access panel from the bottom back of the unit.
Remove the door closer (See DOOR CLOSER WARN-
ING at beginning of this section.) Extract the four
screws securing the unit tray to the cabinet on the left
side, and loosen the four screws on the right side.
Separate the unit tray from the cabinet by leaning the
cabinet to the right, then insert a spacer between the
cabinet and unit tray. (A small piece of 2x4 lumber
works well.) (See Figure 6-8) Cut the filter-drier outlet
ports leading to both refrigerant valves and the filter-
drier inlet tube coming from the condenser.

Page 14
400 Series
400 Series
Component Access and Removal
6-14
Compressor Access and Removal (Model 424)
The compressor is located at the back of the unit tray.
(See Figure 6-26)
After evacuating the refrigerant from the sealed system,
begin the access and removal procedure by removing
the access panel from the bottom back of the unit.
Remove the door closer (See DOOR CLOSER WARN-
ING at beginning of this section.) Extract the four
screws securing the unit tray to the cabinet on the left
side, and loosen the four screws on the right side.
Separate the unit tray from the cabinet by leaning the
cabinet to the right, then insert a spacer between the
cabinet and unit tray. (A small piece of 2x4 lumber
works well.) (See Figure 6-8) Disconnect the compres-
sor electricals from the compressor. Remove the four
nuts from the compressor mounting studs. Cut the suc-
tion tube and discharge tube approximately 1-1/2" from
the compressor and lift the compressor off of the
mounting studs.
Condenser Access and Removal (Model 424)
The condenser is located at the front right of the unit
tray, and is held in place with screws passing up from
under the unit tray into the condenser brackets. (See
Figure 6-27)
After evacuating the refrigerant from the sealed system,
begin the access and removal procedure by removing
the access panel from the bottom back of the unit.
Remove the door closer (See DOOR CLOSER WARN-
ING at beginning of this section.) Extract the four
screws securing the unit tray to the cabinet on the right
side, and loosen the four screws on the left side.
Separate the unit tray from the cabinet by leaning the
cabinet to the left, then insert a spacer between the
cabinet and unit tray. (A small piece of 2x4 lumber
works well.) (See Figure 6-8) Remove the condenser
mounting screws. Cut the inlet tube and outlet tube
approximately 3" from the condenser and lift the con-
denser up and out.
Figure 6-26. Compressor
Figure 6-27. Condenser
Compressor
Unit Tray
Condenser
Screws
Unit Tray
Nut Lock Washer
Washer
Sleeve
Grommet
Washer

Page 15
400 Series
400 Series Component Access and Removal
6-15
MODELS 427 & 427R
NOTE: Since the models 427 and 427R are similar, the access and removal section for these models has been
grouped together. The model(s) covered will be listed between brackets after the heading.
MODEL 427 & 427R EXTERIOR COSMETIC AND MECHANICAL COMPONENT REMOVAL:
An attempt has been made to arrange these instructions in such a way as to simulate which components would
need to be removed first in order to gain access to other components. When following a component removal proce-
dure, it may be necessary to reference another removal procedure towards the front of this section.
Figure 6-28. Kickplate/Grille Removal
Figure 6-29.
Light Switch & Fan Switch Access
Kickplate / Grille
Screw (4)
Light & Fan Switch
Top Molding
Switch Bracket
Kickplate/Grille Removal (Models 427 & 427R)
The kickplate/grille is held in place by four screws pass-
ing through it into adjustable kickplate brackets. To
remove the kickplate/grille, extract the four screws, two
on each side, and pull the kickplate grille forward. (See
Figure 6-28)
NOTE: For the 427R, it may be necessary to remove
the bottom drawer to gain access to the kickplate/grille.
Wine Compartment Light and Fan Switches Access
and Removal (Models 427 & 427R)
The wine compartment light and fan switches protrude
through the top trim molding, just above the door. Tabs
on the switches hold the switches in a switch bracket.
And, the bracket is attached to the switch enclosure
with two screws.
NOTE: See ELECTRIC SHOCK WARNING at begin-
ning of this section.
To access and remove a light and/or fan switch, you will
need to remove the side molding strips. Now, remove
the top molding by pulling the top of the molding for-
ward, then lift up. Remove the two screws from the
switch bracket and pull the bracket forward. (See
Figure 6-29) Disconnect the electrical leads from the
switch being removed. Depress the tabs on the side of
the switch being removed and push the switch out of
the bracket.

Page 16
Hinge Cover
Remove two inner-most
screws at top and bottom
hinge with door open.
Remove two outer-most
screws at bottom hinge
first then at top, with door
closed.
Door
Assembly
Hinge Arm
400 Series
400 Series
Component Access and Removal
6-16
Figure 6-30. Door Assembly Removal
Figure 6-32. 427R Ref. Control Cable
Figure 6-31. 427R Drawer Removal
Pin
Drawer Slide
Hole in Drawer Channel
Drawer Assembly
Turn collar
counterclockwise
to disconnect
Collar
1
2
Door Assembly Removal (Models 427 & 427R)
The door is held in place with Allen-head screws that
pass down through the arm of the top hinge assembly
and up through the arm of the bottom hinge assembly
into the door frame. These mounting screws are con-
cealed by a hinge cover on each hinge arm. The hinge
covers are held in place by tabs that fit into notches in
the hinge arms.
NOTE: See HEAVY DOOR WARNING at beginning of
this section.
To remove a door, begin by opening the door and
removing both hinge covers. With an Allen-head
wrench, extract the two inner-most door mounting
screws from the top and bottom hinge arms, leaving the
two outer-most screws in place. Now, close the door
and remove the outer-most door mounting screws from
the bottom hinge arm, then remove the two outer-most
door mounting screws from the top hinge arm, and lift
the door from the unit. (See Figure 6-30)
NOTE: On the model 427R you will need to remove the
top drawer to access the door mounting screws at the
bottom hinge when the door is closed. (See Drawer
Assembly Removal (427R ONLY) below.)
Drawer Assembly Removal (Model 427R ONLY)
There are channels on both sides of a drawer tub in a
427R that rest on telescoping drawer slide assemblies.
A pin at the front of each drawer slide fits into a hole in
the drawer tub to hold the drawer assembly in place.
(See Figure 6-31)
NOTE: See HEAVY DOOR WARNING and ELECTRIC
SHOCK WARNING at beginning of this section.
The top drawer has a control cable that must be discon-
nected before drawer removal. To remove the top
drawer assembly, pull top drawer forward 6" to 10", lift it
up off of the pins at front and push the slides in.
Carefully place the drawer assembly face down directly
in front of unit. Then, disconnect the display cable at
interior left rear of the unit by turning the collar counter-
clockwise and unplugging the pins from the socket.
(See Figure 6-32)
To remove the bottom drawer assembly, open the draw-
er and lift the front of the drawer up off of the pins at the
end of the drawer slides. Then, pull the drawer assem-
bly forward and out.
Upper and Lower Hinge Assembly Removal
(Models 427 & 427R)
The hinge assemblies are attached to the door with
Allen-head screws, and to a hinge mounting bracket
with Allen-head bolts. (See Figure 6-33)

Page 17
400 Series
400 Series Component Access and Removal
6-17
Figure 6-33. Hinge Assembly Removal
Figure 6-34. Unit Tray Removal
Figure 6-35. Condenser Fan Assembly
Hinge Arm
Bolt
Bolt
Pull unit
tray out and
pivot to the right
Screw
Condenser
Fan Assy
Refrigerant Valve
Bracket
Screw
NOTE: See HEAVY DOOR WARNING and DOOR
CLOSER CAUTION at beginning of this section.
To remove a hinge assembly, you will need to remove
the door first. Begin by opening the door and removing
both hinge covers. Then, with an Allen-head wrench,
remove the four door mounting screws from the top
hinge. Now, close the door and remove the four door
mounting screws from the bottom hinge, and lift the
door from the unit. (See Figure 6-30)
NOTE: On the model 427R you will need to remove the
top drawer to access the door mounting screws at the
bottom hinge. (See Drawer Assembly Removal - 427R
ONLY, on previous page.)
Now, extract the Allen-head bolts from the appropriate
hinge mounting bracket and pull the hinge from the unit.
(See Figure 6-33)
Condenser Fan Assembly Access and Removal
(Models 427 & 427R)
The condenser fan motor is attached to a three legged
condenser fan bracket by screws. The right leg of the
fan bracket hooks over a spacer on the fan shroud.
The two left legs of the fan bracket are secured to the
fan shroud by screws into wellnuts.
NOTE: See ELECTRIC SHOCK WARNING at begin-
ning of this section.
To access and remove the condenser fan assembly,
you will need to remove the kickplate/grille and slide the
unit tray out. To slide the unit tray out, extract the two
screws that secure the tray to the cabinet, located at
the bottom left and right of the cabinet. Slide the unit
tray out half way and disconnect the compressor, con-
denser fan, solenoid and ground wire electrical leads.
Continue sliding the tray out while pivoting it to the
right. (See Figure 6-34)
NOTE: Move tray slowly and observe the sealed sys-
tem tubing. Care must be taken to not kink any of the
tubing.
Now, extract the screws from the left legs of the con-
denser fan bracket.
NOTE: You will need to loosen the screws securing the
refrigerant valve bracket and push the bracket back
slightly and lift up slightly to gain access to the bottom
left leg of the condenser fan bracket.
Then, unhook the right condenser fan bracket leg by
pushing the assembly to the right, then lift up and out.
(See Figure 6-35) The condenser fan motor can now
be removed from the bracket by extracting the screws
in the back side of the fan motor. The fan blade can be
removed from the fan motor by turning the flat-nut on
the fan motor shaft counterclockwise, then pull the nut
and blade from the shaft.

Page 18
400 Series
400 Series
Component Access and Removal
6-18
Figure 6-36.
Refrigerant Valve Solenoid
Figure 6-37. Wine Rack Assembly Removal
MODEL 427 & 427R INTERIOR COSMET-
IC COMPONENT ACCESS AND REMOVAL:
An attempt has been made to arrange these instruc-
tions in such a way as to simulate which components
would need to be removed first in order to gain access
to other components. When following a component
removal procedure, it may be necessary to reference
another removal procedure towards the front of this
section.
Wine Rack Assembly removal (Models 427 & 427R)
To remove a wine rack assembly, pull the rack forward
until it stops. Remove any wine bottles on the rack. Lift
the front of the wine rack up while pulling forward. After
the indentations on the wine rack clear the rollers on
the cabinet slides, lower the front of the wine rack while
continuing to pull forward, then lift the rear of the rack
up and out. (See Figure 6-37)
Wine Storage Cabinet Slide and Slide Spacer
Removal (Models 427 & 427R)
Cabinet slides in the wine storage compartments are
attached to the side wall and false wall of the wine com-
partments with screws. If the cabinet slide is attached
to the handle side of the compartment, a small plastic
slide spacer is placed between the front of the slide and
the side wall. If the cabinet slide is on the hinge side,
it is attached directly to the false wall.
To remove a cabinet slide from a wine storage compart-
ment, you must first remove the wine rack. Then,
extract the mounting screws and pull the cabinet slide
(and slide spacer if on handle side) from the wall. (See
Figure 6-38)
Screw
Solenoids
Lift front while pulling forward.
After indentations clear rollers,
lower front, pull forward, lift rear.
Refrigerant Valve Solenoid Access and Removal
(Models 427 & 427R)
The refrigerant valve solenoids are attached to the tops
of the refrigerant valves with screws. The refrigerant
valves are located to the right of the compressor(s) on
the unit tray, and are held to the valve bracket with P-
clamps and screws. The top valve is for the upper wine
storage compartment and the bottom valve is for the
lower wine storage compartment.. (See Figure 6-36)
NOTE: See ELECTRIC SHOCK WARNING and HOT
TUBING CAUTION at beginning of this section.
To access and remove the condenser fan assembly,
you will need to remove the kickplate/grille and slide the
unit tray out. To slide the unit tray out, extract the two
screws that secure the tray to the cabinet, located at
the bottom left and right of the cabinet. Slide the unit
tray out half way and disconnect the compressor, con-
denser fan, solenoid and ground wire electrical leads.
Continue sliding tray out while pivoting it to the right.
(See Figure 6-34)
NOTE: Move tray slowly and observe the sealed sys-
tem tubing. Care must be taken to not kink any of the
tubing.
Now, disconnect the electrical leads of the valve sole-
noid being removed. Remove the screw at the top of
the solenoid and lift the solenoid up off the valve.
NOTE: You may need to twist the refrigerant valve in
the P-clamps slightly to allow the solenoid to be
removed.

Page 19
400 Series
400 Series Component Access and Removal
6-19
Figure 6-38. Wine Compartment Cabinet
Slide & Slide Spacer
Figure 6-39. Model 427R Drawer Slide
Refrigerator Section Drawer Slide Assembly
Removal (Model 427R ONLY)
The drawer slide assemblies in the refrigerator section
of the 427R are attached to the side walls with Allen-
head screws passing through the drawer slide bracket,
and into blind threaded inserts.
To remove a refrigerator section drawer slide assembly,
remove the drawer first.
NOTE: The top drawer has a control cable that must
be disconnected before drawer removal. To remove the
top drawer assembly, pull top drawer forward 6" to 10",
lift it up off of the pins at front and push the slides in.
Carefully place the drawer assembly face down directly
in front of unit. Then, disconnect the display cable at
interior left rear of the unit by turning the collar counter-
clockwise and unplugging the pins from the socket.
(See Figure 6-32)
To remove the bottom drawer assembly, open the draw-
er and lift the front of the drawer up off of the pins at the
end of the drawer slides. Then, pull the drawer assem-
bly forward and out.
Now, extract the drawer slide mounting screws with a
5/32" Allen-head wrench, and pull the drawer slide
assembly out. (See Figure 6-39)
Drawer Closer Removal (Model 427R ONLY)
The drawer closer assemblies are attached to the right
side of the refrigerator compartment with two screws.
To remove a drawer closer assembly, remove the draw-
er first.
NOTE: The top drawer has a control cable that must
be disconnected before drawer removal. To remove the
top drawer assembly, pull top drawer forward 6" to 10",
lift it up off of the pins at front and push the slides in.
Carefully place the drawer assembly face down directly
in front of unit. Then, disconnect the display cable at
interior left rear of the unit by turning the collar counter-
clockwise and unplugging the pins from the socket.
(See Figure 6-32)
To remove the bottom drawer assembly, open the draw-
er and lift the front of the drawer up off of the pins at the
end of the drawer slides. Then, pull the drawer assem-
bly forward and out.
Now, extract the two screws that secure the drawer
closer to the wall, and pull the drawer closer assembly
out. (See Figure 6-40)
Slide
Screws
Slide Spacer
Figure 6-40. Model 427R Drawer Closer
Drawer Slide
Bolt
Drawer Closer
Screw

Page 20
400 Series
400 Series
Component Access and Removal
6-20
Figure 6-41. Upper Light Strip Removal
Upper Light Strip Access and Removal
(Models 427 & 427R)
NOTE: See ELECTRIC SHOCK WARNING at begin-
ning of this section.
The upper light strip is held in the channel of the light
strip housing at the top of the upper wine storage com-
partment. To remove the upper light strip, you will need
to remove the top wine rack assembly first. Then,
extract the two light strip housing mounting screws.
Lower the end of the light strip housing opposite the
false wall down while pulling forward, and disconnect
the light strip electrical leads. Now, slide the light strip
out the end of the channel. (See Figure 6-41)
NOTE: When reinstalling the light strip housing, care
must be taken to ensure that all wire leads are tucked
behind the light strip housing before re-securing it.
NOTE: Since the lower light strip housing is attached
to the control panel assembly in the models 427 and
427R, the complete control panel assembly must be
removed in order to gain access to the lower light strip.
See Lower Light Strip Access and Removal instructions
in the MODELS 427 & 427R INTERIOR MECHANICAL
COMPONENT ACCESS AND REMOVAL section of this
manual.
Refrigerator Section Lighting Access and removal
(Model 427R ONLY)
NOTE: See ELECTRIC SHOCK WARNING at begin-
ning of this section.
3
The refrigerator section has two light bulbs, one in the
ceiling of the refrigerator section, and one at the bottom
of the divider between the two drawers. To remove
these light bulbs, simply unscrew them from the socket.
(See Figure 6-42)
Reed Switch Removal (Model 427R ONLY)
NOTE: See ELECTRIC SHOCK WARNING at begin-
ning of this section.
The Reed switches in the refrigerator section control
the refrigerator compartment lighting and evaporator
fan.
NOTE: The upper Reed switch also contains the refrig-
erator compartment thermistor.
The Reed switches are attached the evaporator cover
with a screw. (See Figure 6-43) To remove a Reed
switch, extract the screw. Lean the top of the Reed
switch forward, disconnect the electrical leads from the
back side, and pull the Reed switch out.
Figure 6-42. 427R Refrigerator Lighting
Figure 6-43. 427R Reed Switches
Slide light strip out
end of the channel.
Channel
Light Strip
Light Strip Housing
Reed
Switch
Screw
Light Bulb
Light Socket