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427HAG-2
Service Manual
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Sub-Zero 424HAG/B-2, 424G/B-2, 424HAG/P-2, 424G/P-2, 424G/O-2 Service Manual

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subzero.com 800.222.7820
400
Service Manual
General Information 2 Installation Information 10 Controls & Operation 30
General Information
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IMPORTANT SAFETY INFORMATION
Below are Product Safety Labels used in this manual. The "Signal Words" used are WARNING or CAUTION.
When reviewing this manual, please note these differ­ent Product Safety Labels placed at the beginning of certain sections of this manual. You must follow the instructions given in the boxes of the Product Safety Labels in order to avoid personal injury and/or product damage.
The sample Product Safety Labels below illustrate the precautions that should be taken when the signal word is observed.
INTRODUCTION
This Technical Service Manual has been compiled to provide the most recent service information for 400-2 Series units. This information will enable the service technician to troubleshoot and diagnose malfunctions, perform neces­sary repairs, and return a unit to proper operational condition.
The service technician should read the complete instructions contained in this manual before initiating any repairs on a 400-2 Series unit.
INDICATES THAT HAZARDOUS OR UNSAFE PRAC­TICES COULD RESULT IN SEVERE PERSONAL INJURY OR DEATH.
Indicates that hazardous or unsafe practices could result in minor personal injury, and/or product dam­age, and/or property damage.
In addition, please pay attention to the signal word “NOTE”, which highlights information that is especially important for the topic being covered.
This manual is designed to be used by Authorized Service Personnel only. Sub-Zero Freezer Co., Inc. assumes no responsibility for any repairs made on Sub-Zero refrigeration units by anyone other than Authorized Service Technicians.
Information and images contained in this manual are the copyright property of Sub-Zero Freezer Company, Inc.
Neither this manual nor any information or images contained herein may be copied or used in whole or in part
without the express written consent of Sub-Zero Freezer Company, Inc.
© Sub-Zero Freezer Company, Inc, all rights reserved.
TECHNICAL ASSISTANCE
If you should have any questions regarding a Sub-Zero appliance and/or this manual, please contact:
Sub-Zero, Inc.
ATTN: Service Department
P.O. Box 44988
Madison, WI 53744-4988
Customer Assistance
Phone #: (800) 222 - 7820
Facsimile #: (608) 441 - 5887
Technical Assistance
(For Technicians in Customer’s Homes Only)
Phone #: (800) 919 - 8324
Parts / Warranty Claims
Phone #: (800) 404 - 7820
Facsimile #: (608) 441 - 5886
Service Department e-mail Address:
customerservice@subzero.com
Main Office Hours:
8:00 AM to 5:00 PM Central Time
Monday through Friday (24/7 Phone Coverage)
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Figure 1-2. Serial Tag Layout
Serial Tag LocationControl Panel
Figure 1-1. Serial Tag Location
424G / O 2
2191621
0.0
3.5 1.8 R134a
Jan 2005
Model Number
Serial Number
Manufacture Date
Refrigerant Charge
Total Amps Refrigerant Type
WINE
WARRANTY INFORMATION
This page summarizes the 2, 5 & 12 Year Warranty pro- vided with every 400-2 Series unit, as well as two spe­cial warranties:
• Non-Residential Warranty - Applies to units installed
in non-residential applications.
• Display/Model Home Warranty - Applies to distribu-
tor or dealer display units, and units in model
homes, sold three years after date of manufacture. Following the warranty summaries are details and notes about the warranties.
TWO, FIVE & TWELVE YEAR Warranty
• 2 year TOTAL PRODUCT, *parts and labor.
NOTE: Stainless Steel (Classic, carBon & Platinum)
doors, panels & product frames are covered by a 60
day parts & labor warranty for cosmetic defects.
• 5 Year SEALED SYSTEM, **parts and labor.
• 6th - 12th year LIMITED SEALED SYSTEM, **parts only.
ONE & FIVE YEAR Non-Residential Warranty (Example: Office, Yacht, etc.)
• 1 Year TOTAL PRODUCT, *parts and labor.
NOTE: Stainless Steel (Classic, carBon & Platinum) doors, panels & product frames are covered by a 60 day parts & labor warranty for cosmetic defects.
• 5 Year SEALED SYSTEM, **parts only.
ONE & FIVE YEAR Display/Model Home Warranty (Display units sold three years after date of manu­facture)
• 1 Year TOTAL PRODUCT, *parts and labor.
NOTE: Stainless Steel (Classic, carBon & Platinum) doors, panels & product frames are covered by a 60 day parts & labor warranty for cosmetic defects.
• 5 Year SEALED SYSTEM, **parts only.
Warranty Details
* Includes, but is not limited to the following:
Electronic Control System Components, Fan & Light Switches, Fan Motors & Blades, Defrost & Drain Heaters, Defrost Terminator, Drain Pan, Drain Tubes, Wiring, Light sockets & bulbs, Door hinges, Door closers & Cams, Compressor Electricals, etc. . .
* Stainless Steel (Classic, Platinum & Carbon) doors,
panels and product frames are covered by a limited 60 day parts and labor warranty for cosmetic defects.
** Includes the following:
Compressors, Condenser, Evaporators, Filter-Driers, Refrigerant Valve Assembly, Heat-exchangers, All Tubing that Carries the Freon.
NOTE: Condenser Fan Motors, Freon, Solder and compressor electricals are NOT
considered sealed
system parts.
Warranty Notes
• All warranties begin at unit's initial installation date.
• All Warranty and Service information collected by Sub­Zero is arranged and stored under the unit serial num­ber, and the customer's last name. Sub-Zero requests that you have the model and serial number available whenever contacting the factory or parts distributor.
• The serial number tag for models 427-2, 427R-2, and 430-2 is located on the bottom side of the compartment divider, directly behind the control panel. (See Figures
1-1, 1-2) For model 424-2 it is on the upper compart­ment ceiling (not shown).
MODEL
FREEZER CO., INC.
FREEZER REFRIGERATOR
PRODUCT SERVICE 1-800-222-7820
LISTED HOUSEHOLD
REFRIGERATOR OR FREEZER
MADISON, WI
SERIAL NUMBER
TOTAL AMPS
115Vac, 60Hz, 1 Phase
REFRIGERANT
General Information
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MODEL DESCRIPTIONS
This section briefly describes the models covered in this 400-2 Series Technical Service Manual. There are four basic model configurations (Models 424-2, 427-2, 427R-2, and 430-2), with esthetic variations of the exterior cos­metic components. This manual will address the four basic configurations in most cases.
The following diagrams (Figures 1-3 to 1-6) explain the 400-2 Series model numbering system.
424G/B-2 • 400 Series - 24” Wide - Glass/CarBon (or Black) Steel Wrapped Door 424HAG/B-2 • 400 Series - 24” Wide - High Altitude Glass/CarBon (or Black) Steel Wrapped Door 424G/O-2 • 400 Series - 24” Wide - Glass/Overlay Panel Application Door 424HAG/O-2 • 400 Series - 24” Wide - High Altitude Glass/Overlay Panel Application Door 424G/P-2 • 400 Series - 24” Wide - Glass/Platinum Steel Wrapped Door 424HAG/P-2 • 400 Series - 24” Wide - High Altitude Glass/Platinum Steel Wrapped Door 424G/S-2 • 400 Series - 24” Wide - Glass/Stainless Steel Wrapped Door 424HAG/S-2 • 400 Series - 24” Wide - High Altitude Glass/Stainless Steel Wrapped Door 424S/B-2
• 400 Series - 24” Wide - Solid/CarBon (or Black) Steel Wrapped Door 424S/O-2 • 400 Series - 24” Wide - Solid/Overlay Panel Application Door 424S/P-2 • 400 Series - 24” Wide - Solid/Platinum Steel Wrapped Door 424S/S-2 • 400 Series - 24” Wide - Solid/Stainless Steel Wrapped Door 424FS/G-2 • 400 Series - 24” Wide - Free Standing - Stainless Steel Wrapped Unit - Glass Door 424FS/HAG-2 • 400 Series - 24” Wide - Free Standing - Stainless Steel Wrapped Unit - High Altitude Glass Door 424FS/S-2 • 400 Series - 24” Wide - Free Standing - Stainless Steel Wrapped Unit - Solid Door
427G-2 • 400 Series - 27” Wide - Glass Door 427HAG-2 • 400 Series - 27” Wide - High Altitude Glass Door 427S-2 • 400 Series - 27” Wide - Solid Door
Figure 1-3. Model 424-2
Figure 1-4. Model 427-2
NOTE: Door panels for this model sold
separately.
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427RG-2 • 400 Series - 27” Wide - Refrigerated Drawers - Glass Door on Wine Storage Section 427RHAG-2 • 400 Series - 27” Wide - Refrigerated Drawers - High Altitude Glass Door on Wine Section 427RS-2 • 400 Series - 27” Wide - Refrigerated Drawers - Solid Door on Wine Storage Section
Figure 1-5. Model 427R-2
Figure 1-6. Model 430-2
430G/B-2 • 400 Series - 30” Wide - Glass/CarBon (or Black) Steel Wrapped Door 430HAG/B-2 • 400 Series - 30” Wide - High Altitude Glass/CarBon (or Black) Steel Wrapped Door 430G/F-2 • 400 Series - 30” Wide - Glass/Framed Panel Application Door 430HAG/F-2 • 400 Series - 30” Wide - High Altitude Glass/Framed Panel Application Door 430G/O • 400 Series - 30” Wide - Glass/Overlay Panel Application Door 430HAG/O-2 • 400 Series - 30” Wide - High Altitude Glass/Overlay Panel Application Door 430G/P-2 • 400 Series - 30” Wide - Glass/Platinum Steel Wrapped Door 430HAG/P-2 • 400 Series - 30” Wide - High Altitude Glass/Platinum Steel Wrapped Door 430G/S-2
• 400 Series - 30” Wide - Glass/Stainless Steel Wrapped Door 430HAG/S-2 • 400 Series - 30” Wide - High Altitude Glass/Stainless Steel Wrapped Door 430S/B-2 • 400 Series - 30” Wide - Solid/CarBon (or Black) Steel Wrapped Door 430S/F-2 • 400 Series - 30” Wide - Solid/Framed Panel Application Door 430S/O-2 • 400 Series - 30” Wide - Solid/Overlay Panel Application Door 430S/P-2 • 400 Series - 30” Wide - Solid/Platinum Steel Wrapped Door 430S/S-2 • 400 Series - 30” Wide - Solid/Stainless Steel Wrapped Door
NOTE: Door panels for this model sold
separately.
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Wine Storage Unit Maximum Temperature 65° 18°
Sub-Zero Wine Storage Temperature Range, Recommended Wine Storage Temperatures and Recommended Wine Serving Temperatures:
Bordeaux 63° 17°
Red Burgundy 61° 16°
Beaujolais 54° 12°
Sherry 52° 11°
Rosés 48° 9°
Dry White Wines 48° 9°
Champagne 46° 8°
Sweet White Wines 43° 6°
Sparkling Wines 41° 5°
Wine Storage Unit Minimum Temperature 38° 3°
Fahrenheit Celsius
The table below shows the temperature range of the Sub-Zero Wine Storage Units. This table also shows the rec-
ommended temperatures for “serving” wines. Serving wines at the recommended temperatures will insure that white wines maintain their lively and interesting taste, and red wines will maintain their scent and flavor.
NOTE: For “long term storage” of all wines, the ideal temperature is 55°F / 13°C.
NOTE: The temperature range in the refrigerator drawer area of the 427R is 34°F / 1°C to 45°F / 7°C.
Recommended Wine Serving Temperatures
Installation Information
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Anti-Tip Components Installation (424-2)
If anti-tip bracket needs to be installed, follow these steps (See Figure 2-1):
1. Locate and mark two wall studs at back of unit installation location.
2. Identify and mark proper height to clear unit top. Space between unit top and bottom of bracket must NOT be more then 1/4" (6.1 mm)
3. Secure bracket to wall studs, located in step 1, mak­ing sure screws extend 7/8" (22.2 mm) into each wall stud. The bracket must extend a minimum of 3" (76.2 mm) over unit.
4. Refer to Installation Guide provided with unit for any additional information needed.
Anti-Tip Components Installation (424FS-2, 427-2, 427R-2)
If anti-tip bracket needs to be installed, follow these steps (See Figure 2-2):
1. Center anti-tip bracket at back of unit installation location.
2. Secure bracket to wall studs or flooring, making sure screws extend 7/8" (22.2 mm) into each wall stud or flooring.
3. Refer to Installation Guide provided with unit for any additional information needed.
INSTALLATION CONSIDERATIONS
This section covers common installation issues seen by Service Technicians. Improper installation, though not a valid service issue, has the potential to lead to a call for service. Installation related complaints could include, but are not limited to: Unit leveling, unit movement, door misalignment, improper door and drawer sealing, internal frost or condensation, exterior condensation, warm compartment temperatures, etc.
NOTE: If additional installation information is needed, refer to the complete Installation Guide, or contact Sub-Zero Service Department.
UNIT COULD TIP UNDER CERTAIN LOAD CONDITIONS. FAILURE TO INSTALL ANTI-TIP COMPONENTS AND EXTEND FRONT LEVELERS TO FLOOR ACCORDING TO INSTALLATION MANUAL CAN RESULT IN SERIOUS INJURY OR DEATH.
Figure 2-1. Anti-Tip Components
Wall Stud
Bracket
Figure 2-2. Anti-Tip Components
Bracket
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Sub-Zero Unit
Figure 2-3. Anti-Tip Components
Wall Stud
Wood Block
Screws & L-Bracket
Min. 3” (76.2 mm)
Anti-Tip Components Installation (430-2)
If anti-tip components (aka wood block / blocking kit) need be installed, follow these steps (See Figure 2-3):
1. Locate and mark two wall studs at back of unit installation location.
2. Identify and mark proper height to clear unit top. Space between unit top and bottom of wood block must NOT be more then 1/4" (6.1 mm).
3. Using the L-brackets and screws provided, secure wood block to wall studs, located in step 1, making sure screws extend 7/8" (22.2 mm) into each wall stud. The wood block must extend a minimum of 3" (76.2 mm) over unit.
4. Utilizing front and rear levelers, raise and level unit until it contacts wood block (See leveling instructions on following pages).
5. Refer to Installation Guide provided with the unit for any additional information needed.
Unit Leveling (424-2, 424FS-2)
NOTE: Model 424-2 must be leveled before installing into rough-in opening. If unit is already installed and anchored with countertop bracket (See Figure 2-4), Extract anchor screws before leveling, reinstalled after.
To Level 424-2 - Place it in front of rough-in opening, then turn each leveling leg clockwise to raise unit, coun­terclockwise to lower unit (See Figure 2-5).
To Level 424FS-2 - Turn each leveling leg clockwise to raise unit, counterclockwise to lower unit (See Figure 2-2).
Figure 2-5. Leveling Legs
Figure 2-4. Countertop Bracket
Leveling Legs (4) Clockwise to raise, Counterclockwise to lower
Countertop Bracket
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Rear leveling legs will move only 1/16” (2 mm) for every 18 revolutions of the Phillips-head adjusting screw. Do not
over torque. Use lowest torque set­ting on any power screwdriver. Do not turn rear lev­eling legs by hand, doing so will damage rear level­er assembly.
Figure 2-6. Molding & Brackets
Figure 2-9. Adjusting Rear Levelers
Figure 2-8. Adjusting Front Leveling Legs
Figure 2-7. Kickplate/Grille Removal
Side Molding
Unit to Cabinet Bracket
Kickplate/ Grille
Rear Leveler Adjusting Screw
Front Leveling Leg
Rear Leveler Assy
Screw
Unit Leveling (427-2 & 427R-2)
NOTE: Unit must be installed before final leveling
. If unit is anchored to cabinets, remove anchor screws before leveling, reinstalled after (See Figure 2-6).
1. Remove kickplate/grille (See Figure 2-7).
2. To raise front, turn front leveler legs counterclock-
wise, clockwise to lower (See Figure 2-8).
3. At front of unit base is an adjusting screw that reach-
es to rear leveler assembly. To raise rear, use Phillips-head screwdriver to turn adjusting screw clockwise, counterclockwise to lower (See Figure 2-
9).
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Figure 2-11. Kickplate Removal
Figure 2-13. Adjusting Rear Levelers
Kickplate
Screw (2)
Unit Leveling (430-2)
NOTE: Unit must be installed before final leveling
. If unit is anchored to cabinets, remove anchor screws before leveling, reinstalled after (See Figure 2-10).
1. Remove kickplate (See Figure 2-11).
2. To raise front, turn front leveler legs counterclock-
wise, clockwise to lower (See Figure 2-12).
3. At front of unit base is an adjusting screw that reach-
es to rear leveler/roller assembly. To raise unit rear, use 5/16” socket wrench to turn adjusting screw clockwise to raise, counterclockwise to lower (See Figure 2-13).
NOTE: Level is best checked at top & side mainframe.
Figure 2-12. Adjusting Front Leveling Legs
Figure 2-10. Anchoring Screws Removal
Screw
Rear Leveler Adjusting Screw
Front Leveling Leg
Rear Leveler Assy
Installation Information
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Figure 2-15. Door / Top Cabinet Hinge Adjustment
Figure 2-16. Door / Top Door Hinge Adjustment
Cabinet Hinge
Shipping Screws
Door Adjustment (424-2, 424FS-2)
NOTE: Unit must be level before adjusting door.
NOTE: If 424FS-2 door needs adjusting, stainless steel
wrap must be removed to adjust top cabinet hinge (See Figure 2-14).
If unit is properly installed, blocked and leveled, it may still be necessary to adjust door left to right and/or in and out. Adjustments are performed at top and/or bot­tom cabinet
hinge(s) (See Figure 2-15).
1. Working on only one hinge at a time (top or bottom), remove and discard two small Phillips head shipping screws from cabinet hinge before attempting adjust­ments.
2. Using a 1/8” Allen-wrench, loosen and “re-snug” cab­inet hinge screws, allowing door adjustment.
3. Adjust door as required.
4. After adjusting door, tighten cabinet hinge screws and check for proper door seal.
Door and/or Drawer Adjustment (427-2 & 427R-2)
NOTE: Door and/or drawers on models 427-2 & 427R­2 are non-adjustable. Instead, door and/or drawer pan
­els must be adjusted if there is alignment problems. Refer to Installation Manual.
NOTE: Unit must be level before adjusting door and/or drawer panels.
Door Adjustment (430-2)
If unit is properly installed, blocked and leveled, it may still be necessary to adjust door left to right and/or in and out. Adjustments are performed at top and/or bot­tom door
hinge(s) (See Figure 2-16).
1. Working on only one hinge at a time (top or bottom),
remove and discard two small Phillips head shipping screws from door hinge before attempting adjust­ments.
2. Using a 1/8” Allen-wrench, loosen and “re-snug” door
hinge screws, allowing door adjustment.
3. Adjust door as required.
4. After adjusting door, tighten door hinge screws and
check for proper door seal.
Remove shipping screws.
Loosen and re-snug cabinet hinge screws.
Top
Door Hinge
Door Hinge Screws
Figure 2-14. Wrap Removal
1. Remove back brackets.
2. Slide wrap forward & lift up
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Door Stop Adjustment (427-2 & 427R-2)
Models 427-2 and 427R-2 have a 90° door stop cam built into the hinge system. The 90° door stop cam is located in the center portion of the hinge.
To adjust the stop, use a standard straight-blade screw­driver to rotate cam until stop point is reached. (See Figure 2-17)
NOTE: Door stop adjustment must be performed at both bottom and top hinges.
Door Stop Installation (430-2)
For the model 430, optional 90° and 105° door stops are available, free of charge from Parts Distributors and/or Product Distributors. The part number for the 90° stop is #DS90, and the part number for the 105° stop is #DS105.
To install a door stop, the door must be closed, then (See Figure 2-18):
1. Slide door stop cam up onto bottom hinge pin.
2. Position stub on door stop into hole in cabinet hinge.
3. Retain door stop by pushing E-Ring into groove at end of bottom hinge pin, making sure E-ring is clipped securely into groove.
Figure 2-17. Door Stop Adjustment
Figure 2-18. Door Stop Installation
E-Ring
Door Stop
Hinge Pin
90° Stop Cam
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Figure 2-20. Poly Tape Removal
Figure 2-21. Stainless Steel Door Panel Removal
Poly Tape
Door Gasket
Door Frame
Handle Screws
SS Handle
(Door Hinges &
Screws - not shown)
SS Panel
Poly Tape
Door Assy
METAL DOOR PANELS MAY HAVE SHARP EDGES. PROTECTIVE GLOVES SHOULD BE WORN WHEN HANDLING PANELS.
DOOR PANELS MAY BE HEAVY OR UNSTABLE. IF THEY WERE TO FALL, THEY COULD CAUSE SERI­OUS PERSONAL INJURY.
Door Panel Removal and Installation (All Models)
Figure 2-19. Door Closer Removal
Door Closer
Hinge Pin
Classic, carBon and Platinum Stainless Steel Door Panel Removal and Installation (424-2)
To remove a 424-2 SS door panel, the door must first be removed from the unit.
To Remove the Door:
1. Remove mounting screws securing door closer to the unit base (See Figure 2-19)
2. Slide door closer down off of bottom door hinge pin
NOTE: It may be necessary to lean unit back slightly to create enough clearance between hinge pin and floor.
3. Open door and extract screws from top door hinge.
4. Lean door away from unit slightly and lift door out of bottom cabinet hinge.
To Remove a Stainless Steel Panel:
1. Lay door down and remove bottom door hinge and switch depressor. (If lock and/or screws are pres­ent on bottom handle side, remove them also.)
2. Remove Poly-tape under gasket on handle side which covers handle mounting screw holes (See Figure 2-20).
NOTE: Do not
discard tape. It must be reapplied
when panel is reinstalled.
3. Extract handle mounting screws and pull handle from front of door (See Figure 2-21).
4. Lift stainless steel panel from door.
NOTE: To install stainless steel panel, reverse steps above.
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Figure 2-23. Overlay Door Panel Removal
Door Assy
Poly Tape
Panel Mounting Screws
Overlay Panel
SS Handle Shown (Handle may vary)
Figure 2-22. Poly Tape Removal
Poly Tape
Door Gasket
Door Frame
Overlay Door Panel Removal and Installation (424-2)
Overlay panels are attached to the door using screws passing through the door frame from the rear, into the panel. The handle may also be attached through the door frame or just through the panel.
To Remove an Overlay Panel:
1. Open door.
2. Remove Poly-tape under gasket which covers
panel mounting screw holes (See Figure 2-22).
NOTE: Do not
discard tape. It must be reapplied
when panel is reinstalled.
3. Extract panel mounting screws, and possibly handle
mounting screws. (See Figure 2-23)
4. Pull overlay panel from door.
NOTE: To install overlay panel, reverse steps above.
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Figure 2-25. Door Panel Removal
Figure 2-26. Drawer Panel Removal
Drawer Panel
Mounting Bracket
- Upper
Drawer Panel
Mounting
Bracket
- Bottom
Door Panel Removal and Installation (427-2 & 427R-2)
Models 427-2 and 427R-2 are NOT supplied with pan­els from the factory. Panels are purchased separately. Door panels are attached with screws passing from the rear through the door frame into the panel. The handle is attached to the panel.
To remove a door panel:
1. Open door.
2. Remove Poly-tape under gasket which covers panel mounting screw holes (See Figure 2-24).
NOTE: Do not
discard tape. It must be reapplied
when panel is reinstalled.
3. Extract panel mounting screws. (See Figure 2-25)
4. Pull panel from door.
NOTE: To install panel, reverse steps above.
Drawer Panel Removal and Installation (427R-2)
NOTE: Model 427R-2 is NOT supplied with panels from the factory. Panels are purchased separately. Drawer panels are attached using screws passing through mounting brackets at the bottom of each draw­er, and a dog-eared bracket on the back of the panel fit­ting into slots in the face of the drawers. Handles are attached to the panels.
To remove a drawer panel (See Figure 2-26):
1. Open drawer.
2. Extract the six screws at bottom drawer panel bracket.
3. Pull bottom of drawer panel out slightly while pulling downward.
NOTE: To install panel, reverse steps above.
Figure 2-24. Poly Tape Removal
Poly Tape
Door Gasket
Door Frame
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Figure 2-29. Stainless Steel Door Panel Removal
Panel
Door Assy
Handle Screw
(Door Hinges &
Screws - not shown)
Handle
Door closer is spring loaded and may recoil quickly when detached.
Hinge-Side Panel Mounting Screw
Handle Stand-off
Panel Spacer/ Washer
Classic, carBon and Platinum Stainless Steel Door Panel Removal and Installation (430-2)
To remove a 430-2 SS door panel, the door must first be removed from the unit.
To Remove the Door:
1. Open door until hole in bottom cabinet hinge aligns
with hole in door closer arm (See Figure 2-27).
2. Insert short screwdriver up into the two holes.
NOTE: This screwdriver will be used to pry the door closer arm back onto the door hinge stud.
3. Use a small straight-blade screwdriver to remove E-
ring which holds door closer arm to bottom door hinge stud.
4. Pry door closer arm down off of door hinge stud.
Figure 2-27. Door Closer Disconnect
Remove E-Ring
Pry down
Screwdriver up into holes
Figure 7-28a.
Trim/Hinge Removal
Lean door
away from
unit and
lift up
Door
Trim
Door Hinge
Figure 7-28b.
Door Removal
5. Remove hinge-side door trim (See Figure 7-28a).
6. With a 1/8” Allen-wrench and Phillips screwdriver,
extract all screws from top door hinge.
7. Lean door away from unit and lift off of bottom cabi-
net hinge (See Figure 7-28b).
NOTE: When reinstalling door, use screwdriver in cabinet hinge hole and door closer arm hole to pry door closer arm back onto the door hinge stud.
To Remove a Stainless Steel Panel:
1. Lay door down and remove bottom door hinge and
switch depressor at top of door. (If lock and/or screws are present on top handle side, remove them also.)
2. Remove panel mounting screws from hinge side of
door.
3. Remove Poly-tape under gasket on handle side
which covers handle mounting screw holes (See Figure 2-29).
NOTE: Do not
discard tape. It must be reapplied
when panel is reinstalled.
4. Extract handle mounting screws and pull handle
from front of door.
5. Lift stainless steel panel from hinge side first, pivot-
ing it off of handle side of door.
NOTE: To install stainless steel panel, reverse steps above.
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Figure 2-30. Trim Molding Removal
Figure 2-31. Framed and Overlay Handle / Handle
Side Trim & Door Panel Removal
Framed & Overlay Door Panel Removal / Installation (430-2)
Framed and overlay panels are attached to the door by sliding 1/4” (6 mm) thick edge of panel under door trim. On the handle side, there may also be additional screws passing through the door frame from rear into the panel for increased support. Overlay handles may also be attached through the door frame, or just through the panel.
To remove a framed or overlay panel, the handle, or trim on handle side must first be removed. Handles and/or handle-side trim is secured to the door with screws. The screw heads are then concealed by a magnetic trim strip.
To Remove Handle or Handle-side Trim (See Figure 7-30 & 7-31):
1. Press a sticky piece of tape to center of magnetic trim strip.
2. Pull tape so that trim strip bows away from door, disengaging both ends of trim strip from the end­caps.
3. With mounting screws exposed, extract the screws, then pull handle (or handle-side trim) from door.
To Remove Panel (See Figure 7-31):
1. Slide panel towards handle side, and out from under door trim.
NOTE: If the panel will not slide from under door trim, panel mounting screws and/or handle mount­ing screws may have been used.
a. Open door and remove Poly-tape from under
gasket.
b. Extract panel mounting screws, and/or handle
mounting screws.
c. Slide panel towards handle side, and out from
under door trim.
Magnetic
Trim Molding
Handle or Handle-side Trim
Screws
Piece of Tape
Framed or Overlay Panel
Electronic Control System
Wine Storage
Wine Storage
2
2
)
)
Series
Series
3-2
#3758410 - Revision C - May, 2014
Term/Component Definition / Description
Control Board …………………………..The printed-circuit board (PC Board) containing the microprocessor, relays
and electrical connections for monitoring and controlling functions and opera­tions of the unit.
Microprocessor ……………………...... An electrical component on the control board which receives electrical signals
from other components, processes that information, then sends an electrical signal to the relays on the board to open or close, and other electronic com­ponents in the unit to switch on or off.
Relay …………………………………… Electrical components on the control board which switch other components in
the unit ON and OFF when instructed to do so by the microprocessor.
LED (Light Emitting Diode) ………...... A small electronic “tube” that lights-up when power is supplied to it. In the
control panel assembly, LED’s are arranged to show values (numbers). LED’s are also used as back-lighting for the indicators in the control panel.
Control Panel Assembly ………………The information input and read-out area of the electronic control system,
located between the two wine storage compartments. NOTE: The model
427R-2 also has a control panel assembly at top front of the top refrigerator drawer assembly.
Membrane Switch …………...……….. An integral part of the control panel assembly, which consists of the function
keys used for all input functions to the electronic control system.
Keys (Function Keys) ………………… The buttons on the Membrane switch used for input functions. (The keys are:
UNIT ON/OFF, LIGHTS ON/OFF, ALARM ON/OFF, COLDER, WARMER)
Indicators ………………….....………... The words and numbers that are displayed at the control panel. (Example:
Temperature displays, temperature alarm bell, “SERVICE”, and error codes.)
Set-Point ……………………………….. The desired compartment temperature, established by pressing the COLDER
or WARMER keys.
High Offset (Cut-in)………………….....During normal operation of a wine storage unit, it is the maximum evaporator
temperature the electronic control system will allow before calling for cooling.
Low Offset (Cut-out)…………………... During normal operation of a wine storage unit, it is the minimum compart-
ment air temperature the electronic control system will allow before interrupt-
ing cooling. Offset Temperature Range …………... The difference between the low offset and the high offset. Thermistor (Temperature Sensor) ….. A resistor with which resistance changes as temperatures around it change.
For electronic control system purposes, the microprocessor measures this
resistance and displays it as a temperature reading at the control panel. Display Units of Measure……………...Temperatures displayed at the control panel may be in fahrenheit (°F), or cel-
sius (°C), units of measure. Switching from one to the other display units of
measure is accomplished through a series of key strokes. Error Codes .…………………………... The code numbers accompanied by the letters “EC” that appear in the control
panel display windows during diagnostic mode if the unit experienced specific
problems related to electrical signals supplied by electrical components.
Electrical “Pulse”.................................. A non-constant supply of voltage, or electrical signal, the duration of which is
often measured in milliseconds.
Electrical Polarity..................................The positive ( + ) and negative ( - ) sides of the alternating current sinewave.
WINE STORAGE ELECTRONIC CONTROL TERMINOLOGY & COMPONENT DESCRIPTIONS
The electronic control system monitors, regulates and controls a variety of functions; it also displays temperatures, possible problems with the appliance and the temperature alarm bell status.
The table below defines some basic electronic control terminology. An understanding of this information is needed in order to comprehend the operations and functions of the electronic control system.
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