Component Access/Removal

COMPONENT ACCESS AND REMOVAL

This section explains how to access and remove components in a model 3151 ice maker. The procedures are arranged by component location: exterior, interior, and compressor area. It is important to follow the sequence of component removal as some parts may need to be removed to gain access to others. Refer to other component removal procedures in this section as needed.

NOTE: Before proceeding, review the WARNINGS and CAUTIONS below.

EXTERIOR COMPONENTS

Kickplate Removal

The kickplate is held in place with two screws, one at each side. To remove the kickplate, extract the screws and pull the kickplate forward. (See Figure 5-1)

Door Panel Mounting Hardware and Upper Door/Hinge Cover Removal

The handle-side panel mounting bracket is attached to the back side of the door panel with screws. The tabs of the handle-side bracket fit into slots in the face of the door. The top and bottom panel mounting brackets are held to the front of the door with screws. The panel is secured to the top and bottom brackets by screws that pass through the brackets into the back of the panel. The upper door/hinge cover is also mounted to the face of the door with screws.

To access these components, the door panel must be removed. Open the door and extract the door panel mounting screws from the bottom and top brackets. Slide the panel towards the hinge side to disengage the handle-side bracket from the slots in the door.

With the door panel off, remove the top and bottom panel mounting brackets and the upper door/hinge cover by extracting their mounting screws from the face of the door. Remove the handle-side bracket from the back of the door panel by extracting the panel mounting screws. (See Figure 5-2)

Door Gasket Removal

The door gasket has a rib on its back side that fits into a channel in the door liner. To remove the door gasket, open the door and pull the gasket from the door liner. (See Figure 5-3)

Door Removal

The door is held in place by screws that pass through the top and bottom hinges into the face of the door. To remove the door, the door panel must be removed first. With the door closed, extract the door mounting screws from the top and bottom hinges (two each hinge) and pull the door from the unit. (See Figure 5-4)

NOTE: To remove the door with the hinges, see Hinge Removal below.

Hinge Removal

Two screws at each hinge secure the hinges to the unit. To remove the hinges, open them fully and extract the hinge mounting screws. (See Figure 5-5)

Bin Thermostat Control Knob Removal

The bin thermostat control knob fits over the shaft of the bin thermostat. To remove the knob, pull it straight forward off of the control shaft. (See Figure 5-6)

Control Panel Assembly Removal

The control panel assembly has a flange at the bottom that sits behind the lower cabinet face plate. Two halves of dual lock fastener pads (similar to Velcro) are adhered to the top rear of the control panel, mating with the other halves adhered to the bottom flanges of the upper cabinet face plate.

To remove the control panel assembly, first remove the bin thermostat control knob. Then, pull the top of the control panel forward to disengage the dual lock fastener pads and lift the panel up. (See Figure 5-6)

INNER CONTROL ACCESS PANEL REMOVAL

The inner control access panel is behind the control panel assembly. Three screws hold the panel to the unit cabinet/shell: one at the top center and one on each side.

To remove the inner control access panel, first remove the control knob and control panel assembly. Then, extract the three panel mounting screws and pull the top of the panel forward while lifting up. (See Figure 5-7)

Bin Trim Ring Removal

The bin trim ring fits into the opening of the upper cabinet face plate and extends into the bin area. Tabs behind the outer flange on the trim ring hold it to the upper cabinet face plate. A bead of permagum is placed behind the outer flange to prevent rattling.

To remove the bin trim ring, flex it inward at the top and sides while pulling forward to disengage the tabs from the upper cabinet face plate. (See Figure 5-8)

Upper Cabinet Face Plate & Bin Seal Removal

The bin seal is a 3/4" thick styrofoam sheet, approximately the same size and shape as the upper cabinet face plate. The bin seal is sandwiched between the face plate and the cabinet.

The upper cabinet face plate is attached to the cabinet with screws: two screws pass through the top hinge and face plate into the top hinge mount support bracket; two screws pass through the face plate at the upper corner on the handle side; and one screw at each bottom corner pass through flanges into the cabinet/shell.

To remove the upper cabinet face plate and bin seal, first remove the control panel assembly, door, hinges, and bin trim ring. Then, extract the two screws at the upper corner on the handle side and the two screws at each bottom corner. Pull the face plate and bin seal forward. (See Figure 5-8)

Decor Trim Gasket Removal

The decor trim gasket fits over the edge of the cabinet/shell at the opening of the bin. A screw at the top and one at the bottom of the opening hold the gasket in place.

To remove the decor trim gasket, first remove the control panel assembly, door, top hinge, bin trim ring, upper cabinet face plate, and bin seal. Then, loosen the screws at the top and bottom center of the bin opening and pull the gasket from the edge of the cabinet/shell. (See Figure 5-9)

LOWER CABINET FACE PLATE REMOVAL

The lower cabinet face plate is attached to the cabinet with screws: two screws pass through the bottom hinge and face plate, and two screws pass through the face plate on the handle side. All four screws attach to the bottom hinge mount support bracket.

To remove the lower cabinet face plate, the door must be removed first. Then, extract the two screws on the handle side and pull the face plate forward. (See Figure 5-10)

Hinge Mount Support Bracket Removal

The upper and lower hinge mount support brackets are secured to the cabinet/shell with screws.

To remove the hinge mount support brackets, first remove the door, bin trim ring, upper cabinet face plate, bin seal, and lower cabinet face plate. Then, extract the bracket mounting screws. (See Figure 5-11)

Rear Panel Removal

The rear panel is held to the back of the unit with screws. To remove the rear panel, extract the panel mounting screws and pull the panel from the unit. (See Figure 5-11)

Cabinet/Shell Removal

The cabinet/shell is secured to the unit with screws along the bottom of both sides, screws at the top and bottom of the bin opening, and mounting screws for some exterior components.

To remove the cabinet/shell, first remove the rear panel, kickplate, control knob, control panel assembly, inner control access panel, door, hinges, bin trim ring, upper cabinet face plate, bin seal, and lower cabinet face plate. Then, extract the screws at the bottom and top of the bin opening. Extract the screws along the bottom of both sides of the unit and lift the cabinet/shell up off of the base frame. (See Figure 5-11)

COMPONENTS IN BIN AREA

Bin Thermostat Bracket Removal

The bin thermostat bracket is a hollow cylindrical tube holding the bin thermostat control bulb. The bracket fits into holes in the front and rear walls of the bin.

To remove the bin thermostat bracket, push the bracket back into the rear bin wall hole until the front of the bracket clears the front wall hole. Then, lift the front of the bracket up and pull it from the rear wall hole. (See Figure 5-12)

Curtain and Curtain Stiffener Removal

The curtain and curtain stiffener are held to the reservoir with screws passing through the front of the reservoir and stiffener into the curtain bracket. To remove them, extract the curtain mounting screws and pull the curtain and stiffener from the reservoir. (See Figure 5-13)

Cube Chute Removal

The cube chute has two notches at its rear flange that fit over the stems of the spray jet bases. The spray jet bases are tightened to sandwich the chute's rear flange between the bottom flat surface of the jet base and the reservoir wall.

To remove the cube chute, loosen both spray jet bases and pull the cube chute forward. (See Figure 5-14)

Spray Jet Assembly Removal

A spray jet assembly includes a cap/nozzle, spinner, and jet base. The nozzle screws onto the base, capturing the spinner. The jet base stem passes through a notch in the cube chute, a hole in the reservoir, and an O-ring, then threads into the spray bar assembly tubing.

To remove the nozzle and access the spinner, unscrew the nozzle counterclockwise off the jet base.

To remove the jet base or the spray jet assembly, use a 5/8" wrench to unscrew the jet base stem from the spray bar assembly tubing. (See Figure 5-14)

O-Ring and Spray Bar Assembly Removal

The spray bar is a copper tubing assembly with one inlet and two outlet ports. The inlet fits inside the circulating/spray pump discharge tube. An O-ring is positioned at the top of each spray bar outlet port. The jet base stems pass down through the reservoir wall and O-rings, then screw into the outlet ports, sandwiching the O-rings to seal the connection.

NOTE: Using a mirror can aid in these removal procedures.

To remove an O-ring, extract the appropriate jet base and pull the O-ring from the top of the spray bar tubing.

To remove the spray bar assembly, extract both spray jet assemblies or jet bases and remove the O-rings. With pliers, depress the ends of the hose clamp at the spray bar inlet and pull the spray bar from the circulating/spray pump discharge tube. (See Figure 5-15)

Circulating/Spray Pump Hose Removal

Three hoses connect to the circulating spray pump nipples. The bottom hose is the pump inlet hose from the reservoir bottom nipple. The second hose up is the spray discharge hose to the spray bar assembly. The top hose on the pump leads to the top center reservoir nipple. This top hose bypasses the spray discharge hose if it becomes clogged or air-locked.

NOTE: Using a mirror can aid in these removal procedures.

To remove a pump hose, depress the hose clamp ends and pull the hose off the nipples and/or spray bar assembly. (See Figure 5-15)

Reservoir Drain Hose Removal

The reservoir drain hose fits between the top right reservoir nipple and the ice bin drain fitting.

NOTE: Using a mirror can aid in these removal procedures.

To remove the drain hose, pull it off the top right reservoir nipple and the drain fitting. (See Figure 5-16)

O-Ring and Stainless Steel Drain Nipple Removal

The stainless steel drain nipple inserts through the back of the top right reservoir nipple, up to the nub. An O-ring is placed over the stainless nipple inside the reservoir.

NOTE: Using a mirror can aid in these removal procedures.

To remove the stainless steel nipple, first remove the drain hose from the top right reservoir nipple. Then, remove the O-ring inside the reservoir and pull the stainless steel nipple out through the back of the reservoir top right nipple. (See Figure 5-16)

COMPONENTS BEHIND PANELS AND SHELL

Inlet Water Valve Removal

The inlet water valve is attached to the left side of the control box with screws. Inlet and outlet water lines connect to the valve with compression fittings.

To access the inlet water valve, remove the control panel and inner access panel.

Before removing the water valve, shut off the water supply and disconnect power to the unit. Unplug the valve electrical leads. With a wrench, disconnect the inlet water line from the valve. Extract the valve mounting screws, pull the valve forward, and disconnect the outlet water line. (See Figure 5-17)

Harvest Cycle Timer & Switch Removal

The harvest cycle timer switch is attached to the timer. The timer is attached inside the control box with screws and spacers. Three wires connect to the switch. One electrical lead from the timer runs to the terminal board, and another runs to the cube size control.

To access the cycle timer, remove the control panel and inner access panel.

Before removing the harvest cycle timer and switch, disconnect power to the unit. Unplug the electrical leads from the switch. Extract the timer mounting screws and pull the timer forward.

Disconnect the timer electrical lead from the terminal board. Extract the control box face plate mounting screw, pull the face plate forward, and disconnect the timer electrical lead from the cube size control. (See Figure 5-18)

Terminal Board Removal

The terminal board is attached inside the control box with screws.

To access the terminal board, remove the control panel, inner access panel, and lower face plate.

Before removing the terminal board, disconnect power to the unit. Extract the board mounting screws, disconnect all electrical leads from the terminal board, and pull the board forward. (See Figure 5-19)

Hot Gas Solenoid Coil Removal

The hot gas solenoid coil is attached to the top of the hot gas valve body with a clip. The coil's electrical leads pass through a grommet in the control box side and plug into the terminal board.

To access the hot gas solenoid coil, remove the control panel and inner access panel.

Before removing the hot gas solenoid coil, disconnect power to the unit. Unplug the coil electrical leads from the terminal board. Using a small flat blade screwdriver, pull the clip off the top of the hot gas valve body, lift the coil off the valve body, and pull the electrical leads from the control box. (See Figure 5-20)

Drain Pump Pressure Switch Removal (315IP Only)

The drain pump pressure switch is attached to the pump bracket with screws. Electrical leads connect to both sides of the switch. A pressure sensing hose from the drain pump inlet hose fits over the switch's pressure sensing port.

To access the drain pump pressure switch, remove the control panel, inner access panel, and lower face plate. Before removing the switch, disconnect power to the unit and scoop out all ice cubes from the storage bin. Unplug the electrical leads from both sides of the switch. Pull the hose from the pressure sensing port. Extract the switch mounting screws and pull the switch forward. (See Figure 5-21)

Circulating/Spray Pump Removal

A rubber gasket/bushing assembly is positioned at the base of the circulating/spray pump motor. The pump is inserted down through a hole in the back of the bin assembly. Two screws are inserted down through the base flanges into screw anchors. The anchors expand at the bottom to hold the pump. The circulating/spray hoses attach to the pump inside the bin.

To access the circulating/spray pump, remove the rear panel.

Before removing the pump, disconnect power to the unit. Disconnect all hoses from the pump inside the ice storage bin. Disconnect the electrical leads from the pump motor. Remove the pump mounting screws and lift the pump and gasket/bushing assembly out of the hole in the back of the storage bin. (See Figure 5-22)

Bin Level Control (Thermostat) Removal

The bin level control is mounted to the right side of the control box face plate with screws. Two wires connect to the back of the control. The control capillary tube is inserted into a plastic sleeve and routed out the back of the control box, up through a grommet in the base assembly, up the back of the bin assembly, and into the back of the cylindrical bin thermostat bracket.

To access the bin level control, remove the control panel, inner access panel, and back panel.

Before removing the bin level control, disconnect power to the unit. Extract the control box face plate mounting screw and pull the face plate forward. Extract the control mounting screws. Disconnect the electrical leads from the control. At the back of the unit, pull the control capillary tube from the thermostat bracket, then pull the capillary tube with the sleeve from the base assembly grommet. At the front of the unit, pull the control body, capillary tube, and sleeve forward, out of the control box. (See Figure 5-23)

Cube Size Control (Evap. Thermostat) Removal

The cube size control is mounted to the left side of the control box face plate with screws. Three wires connect to the back of the control. The control capillary tube is routed out the back of the control box, up through a base assembly grommet, up the back of the bin assembly, and into a tube attached to the evaporator.

To access the cube size control, remove the control panel, inner access panel, upper and lower face plates, back panel, unit shell, insulation bag, tube retaining clip, and evaporator/platen cover.

Before removing the cube size control, disconnect power to the unit. Extract the control box face plate mounting screw and pull the face plate forward. Extract the control mounting screws. Disconnect the electrical leads from the control. At the back of the unit, pull the control capillary tube from the evaporator tube, then pull the capillary tube from the base assembly grommet. At the front of the unit, pull the control body and capillary tube forward, out of the control box. (See Figure 5-24)

Reservoir Fill Tube Assembly Removal

The reservoir fill tube assembly is attached to the water valve outlet port. The tube is routed to the rear of the base assembly, up through a base assembly grommet, up the back of the bin assembly, and hooked over the back edge of the evaporator.

To access the reservoir fill tube assembly, remove the control panel, inner access panel, upper and lower face plates, back panel, unit shell, insulation bag, tube retaining clip, and evaporator/platen cover.

Begin removing the reservoir fill tube assembly by disconnecting it from the water valve outlet. Then, pull the tube from the base assembly grommet and unhook it from the back edge of the evaporator. (See Figure 5-25)

Drain Pump Assembly Removal (315IP Only)

The drain pump assembly on the model 315IP sits on the pump bracket. The pump is held by a cable tie looping through bracket holes and around the pump body. The bracket attaches to the base assembly with screws. The pump inlet hose fits over the pump's front port. The outlet hose attaches to the pump's top port.

To access the drain pump assembly, remove the control panel, inner access panel, upper and lower face plates, back panel, and unit shell.

Before removing the drain pump assembly, disconnect power to the unit and scoop out all ice cubes from the storage bin. Disconnect the inlet and outlet hoses from the pump, cut the cable tie holding the pump to the bracket, and pull the pump off the bracket. (See Figure 5-26)

Condenser Fan Assembly Removal

The condenser fan motor attaches to the fan bracket with screws passing up through the bracket into the motor body. The fan bracket attaches to the base assembly with screws passing up through the base into the fan bracket. The condenser fan blade fits over the motor shaft. A flat nut screws onto the motor shaft to hold the blade. The fan motor electrical leads pass through a grommet in the control box side and plug into the terminal board.

To access the condenser fan assembly, remove the control panel, inner access panel, upper and lower face plates, back panel, and unit shell.

Before removing the condenser fan assembly, disconnect power to the unit. Disconnect the fan motor electrical leads from the terminal board. Extract the fan bracket mounting screws from the bottom of the base assembly and lift the fan assembly off the base plate. Remove the fan motor from the bracket by extracting its mounting screws, and remove the fan blade from the motor shaft by removing the flat nut. (See Figure 5-27)

High-Side Filter-Drier Removal

The high-side filter-drier attaches between the condenser outlet and the capillary tube, located at the rear of the base assembly.

To access the high-side filter-drier, remove the back panel.

Before removing the high-side filter-drier, capture the refrigerant from the sealed system. Score a line around the capillary tube approximately one inch from the filter-drier. Fatigue the capillary tube at this point until it separates. Cut the drier inlet tube approximately one inch from the drier using a tube cutter. (See Figure 5-28)

Evaporator Assembly Removal

The evaporator assembly consists of the evaporator, heat exchanger assembly, and hot gas line from the gas valve. The evaporator/cube mold sits inside the top of the reservoir insert. The evaporator/platen cover is placed over the evaporator, secured by tape and a piece of tape.

To access the evaporator assembly, remove the control panel, inner access panel, upper and lower face plates, back panel, unit shell, insulation bag, tube retaining clip, and evaporator/platen cover.

Before removing the evaporator assembly, capture the refrigerant from the sealed system. Score and separate the capillary tube approximately one inch from the filter-drier. Cut the suction line approximately one inch from the compressor. Cut the hot gas line approximately one inch from the hot gas valve and lift the assembly out of the reservoir insert and off the back of the bin assembly. (See Figure 5-29)

Hot Gas Valve Removal

The hot gas valve inlet attaches to a "T" connection off the compressor discharge line. The valve outlet attaches to the hot gas line running to the evaporator. The hot gas solenoid coil attaches to the top of the hot gas valve body with a clip.

To access the hot gas valve, remove the control panel, inner access panel, upper and lower face plates, back panel, and unit shell.

NOTE: Separating the top of the base assembly from the bottom by extracting screws from the base assembly legs allows easier access to the hot gas valve.

Before removing the hot gas valve, capture the refrigerant from the sealed system. Disconnect the solenoid coil from the valve body. Cut the valve inlet and outlet tubing approximately one inch from the valve body and lift the valve off the base assembly. (See Figure 5-30)

Compressor Removal

The compressor sits on the bottom plate of the base assembly. Two "U" shaped compressor brackets pass up through the base plate, compressor grommets, and washers. Cotter-pin clips attach to the compressor brackets over the washers and grommets to hold the compressor in place.

To access the compressor, remove the control panel, inner access panel, upper and lower face plates, back panel, and unit shell.

NOTE: Separating the top of the base assembly from the bottom by extracting screws from the base assembly legs allows easier access to the compressor.

Before removing the compressor, capture the refrigerant from the sealed system. Disconnect the electrical leads from the compressor. Cut the suction and discharge lines approximately one inch from compressor ports, remove the clips, and lift the compressor off the base assembly. (See Figure 5-31)

Condenser Removal

The condenser attaches to the base assembly with screws passing up through the base into the bottom side flanges of the condenser. The control box attaches to the top of the condenser with screws passing through the top side flanges into the control box sides. The condenser fan shroud attaches to the back of the condenser with screws passing through the shroud into the rear side flanges. A styrofoam gasket is sandwiched between the fan shroud and condenser to prevent air leaks. The condenser inlet port attaches to the compressor discharge line. The condenser outlet leads to the high-side filter-drier.

To access the condenser, remove the control panel, inner access panel, upper and lower face plates, back panel, and unit shell.

NOTE: Separating the top of the base assembly from the bottom by extracting screws from the base assembly legs allows easier access to the condenser.

Before removing the condenser, capture the refrigerant from the sealed system. Cut the compressor discharge line and drier inlet line approximately one inch from the condenser inlet and outlet ports. Disconnect the control box from the top of the condenser. Disconnect the fan shroud from the back of the condenser and lift the condenser off the base assembly. (See Figure 5-32)