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Component Access & Removal

subzero.com 800.222.7820

400

Service Manual

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Summary of Contents for 424FS

Page 1: ...Component Access Removal 61 subzero com 800 222 7820 400 Service Manual ...

Page 2: ...EMBER THAT THE UNIT COULD TIP FORWARD WHEN PULLED FORWARD BEYOND THE ANTI TIP COMPONENTS RESULTING IN SERIOUS INJURY OR DEATH PULLING A UNIT FROM ITS INSTALLATION SHOULD ONLY BE PERFORMED BY AN AUTHORIZED SERVICE TECHNICIAN OR INSTALLER TO AVOID ELECTRIC SHOCK POWER TO THE UNIT MUST BE DISCONNECTED WHENEVER ACCESSING AND OR REMOVING COMPONENTS POWERED BY ELECTRICITY OR COMPONENTS NEAR OTHER ELEC T...

Page 3: ...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 in section 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 se...

Page 4: ...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 ...

Page 5: ...lat 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...

Page 6: ...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...

Page 7: ...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...

Page 8: ...d 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...

Page 9: ...ay 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 pa...

Page 10: ... 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 ...

Page 11: ...ctrical 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...

Page 12: ...xchanger 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 ...

Page 13: ...efrigerant 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 ...

Page 14: ... 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 f...

Page 15: ...rews 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...

Page 16: ...crews 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 a...

Page 17: ... 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 a...

Page 18: ...ou 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 t...

Page 19: ...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...

Page 20: ...ight 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 bott...

Page 21: ...r farthest from the false wall out slightly Push the thermistor electrical leads and rubber grommet from the slot in the evapora tor cover Locate the ground wire riveted to the back of the evaporator cover Extract the ground at the other end of the ground wire Continue rotating the side of the evaporator cover farthest from the false wall out until the flange clears the false wall See Figure 6 45 ...

Page 22: ...ck of the access panel then lower the back of the access panel and pull it towards the rear of the unit See Figure 6 48 Figure 6 48 Wine Storage Control Board Access Panel Refrigerator Section Evaporator Support Cover Access and Removal Model 427R ONLY The evaporator support covers are narrow covers to the left and right of the refrigerator evaporator cover The left cover holds the control cable c...

Page 23: ...control board cover is in line with the wire channel DO NOT insert a screw in this hole Doing so could short out the unit and or cause electrical shock See ELECTRIC SHOCK WARNING and STATIC ELECTRICITY CAUTION at beginning of this section To access and remove the refrigerator control board remove the top drawer first NOTE The top drawer has a control cable that must be disconnected before drawer r...

Page 24: ...panel assembly forward and disconnect the ground wire NOTE When reinstalling the control panel assembly you must reapply a bead of silicone along the inside of the top flange Lower Light Strip Access and Removal Models 427 427R NOTE See ELECTRIC SHOCK WARNING at begin ning of this section The lower light strip is held in the channel of the light strip housing which attached to the control panel as...

Page 25: ...nting screw See Figure 6 54 Wine Storage Evaporator Thermistors Access and Removal Models 427 427R The upper and lower wine storage evaporator thermis tors are attached to the right side evaporator brackets of both evaporators with Phillips head screws See Figure 6 55 NOTE See ELECTRIC SHOCK WARNING at begin ning of this section To access and remove a wine storage evaporator ther mistor you must f...

Page 26: ...ottom Remove the screw from the evaporator thermistor and discon nect the evaporator thermistor electrical leads Upper and Lower Wine Storage Evaporator Fan Assembly Access and Removal Model 427 427R The wine storage evaporator fan assemblies are attached to the rear wall of each wine compartment with four Phillips head screws See Figure 6 58 NOTE See ELECTRIC SHOCK WARNING at begin ning of this s...

Page 27: ...r elec trical leads and rubber grommet from the slot in the evaporator cover Locate the ground wire riveted to the back of the evaporator cover with a screw securing it to the rear wall Extract the ground screw and continue rotating the side of the evaporator cover farthest from the false wall out until the flange behind the false wall clears the false wall Pull the evaporator cover out and extrac...

Page 28: ...t and outlet tubing and pull the evaporator out Wine Storage Refrigerant Valve Access and Removal Models 427 427R 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 61 NOTE Se...

Page 29: ...l need to slide the unit tray out 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 cut the suction port and discharge port approxi mately 1 from the compressor Disconnect the com pressor electricals Extract the four bolts from the com pressor base and lift the compressor up and out Condenser Access and Removal Models 4...

Page 30: ...drain pan are in position and in good shape Door Closer Removal Model 430 The door closer assembly sets inside of the unit base and the door closer arm is held on the bottom door hinge stud with an E ring NOTE The procedure for disconnecting the door clos er when removing a door is different than the door clos er removal procedure listed below See DOOR CLOSER CAUTION at beginning of this section W...

Page 31: ...m down off of the door hinge stud NOTE The screwdriver inserted in the holes of the door closer arm and the bottom cabinet hinge will be used to pry the door closer arm back into position when reattaching the door closer to the bottom door hinge With the door closer disconnected remove the hinge side door trim and extract all screws from the top door hinge then lift door assembly off of bottom cab...

Page 32: ... extract the screws at the top front of outer grille frame and lift frame off See Figure 6 71 Light Switch and Fan Switch Access and Removal Model 430 The light and fan switches are mounted to the top mainframe and held in place by tabs on the sides of the switches A switch cover over the top of the switches is held in place with a screw NOTE See ELECTRIC SHOCK WARNING at beginning of this section...

Page 33: ...urning the flat nut on the fan motor shaft counterclockwise then pull the nut and blade from the shaft See Figure 6 73 Refrigerant Valve Solenoid Access and Removal Model 430 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 and are held to the valve bracket with P clamps and screws The t...

Page 34: ...ust be taken to ensure that all wire leads are tucked behind the light strip housing before resecuring it NOTE Since the lower light strip housing is attached to the control panel assembly in the model 430 the com plete control panel assembly must be removed in order to gain access to the light strip See Lower Light Strip Access and Removal instructions in the MODEL 430 INTERIOR MECHANICAL COMPONE...

Page 35: ...n cover mounting screws and the evaporator fan cover Pull the top of the evaporator cover forward and down 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 evaporator cover out See Figure 6 79 NOTE When reinstalling the evaporator cover the ground wir...

Page 36: ...all other electrical lead attached to the control board Expand the tabs to release the control board then pull down and out See Figure 6 82 NOTE When re connecting electrical leads to the con trol board make sure the silver area on the membrane switch ribbon cable terminal is facing away from the con trol board Control Panel Assembly Removal Model 430 The control panel assembly is set at the front...

Page 37: ... thermistor first remove the wine racks all cabinet slides cabinet slide spacers and cabinet slide support spacers in the compartment Then remove the evaporator fan cover mounting screws the evaporator fan cover and the lower evapo rator cover Extract the evaporator support cover mounting screws and pull the evaporator support cover out while pushing the thermistor leads and grommet out of the slo...

Page 38: ... screws and the evaporator fan cover Pull the top of the evaporator cover forward and lift off of the pegs at the bottom Locate the ground wire riveted to the back of the evaporator cover with a screw securing it to the rear wall Extract the ground screw and remove the evaporator cover Extract the evaporator mounting screws Now cut the evaporator inlet and outlet tubing and pull the evapora tor ou...

Page 39: ...ssor sets on top of four threaded studs and is secured with nuts over the studs See Figure 6 90 NOTE See HOT COMPRESSOR TUBING CAU TION at beginning of this section After evacuating the refrigerant from the sealed system Disconnect the compressor electricals Extract the four nuts from the threaded studs Lift the compressor until it clears the threaded studs and pull it forward to gain better acces...

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