Bosch WFMC64 Instrucciones de funcionamiento

Rev 0 (1/17/08)

1Nexxt

Nexxt Washer Training/Repair Manual

Washer Training/Repair Manual

•Fascia panel disassembly………………...….. 2

•Top & rear panel disassembly………….…… .4

•Tub, drum & dampers......................................5

•Drum drive motor………………………….…… 6

•Drain pump…………………………….…………7

•Front panel disassembly………………….…...8

•Installing door seals………….………….…….10

•Heater & NTC……………………………...……11

•Door lock…………….……………………….….12

•Vibration checklist……………….…………….13

•Sensors…………………………….…………….14

•Test program……………….…………………...17

•Fault codes..……………….………….………...19

•Troubleshooting….……….………….………...22

•Oversudsing………………...…….…………….25

•Quiz……………………………………………….26

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Rev 0 (1/17/08)

2Disassembly

Disassembly –

–Fascia (Control) Panel (1)

Fascia (Control) Panel (1)

To remove fascia panel to access control module & dispenser, remove (4) T-20 Torx front/side screws and lift

panel up. Caps over screws can be removed using fingernails or a sharp knife – take care not to scratch

fascia panel or caps.

Knobs are permanently attached to

panels and cannot be removed.

When reassembling

panels, tuck rear

tabs under top

panel 1st.

T-20 screws

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Disassembly

Disassembly –

–Fascia (Control) Panel (2)

Fascia (Control) Panel (2)

Control modules can be readily removed from fascia panels, but there’s a knack to it

– must use the procedure below exactly as shown.

HINT:Don’t force modules out from fascia panels

to avoid breaking plastic parts. If modules don’t

come out easily, the procedure hasn’t been

followed and plastic parts will break.

Start from left side Pry outer & inner tabs together L – R Pry out (3) inner tabs + all outer tabs

HINT:The knob does NOT have

to be removed to remove the

control module. The module lifts

off completely from the panel,

knob & buttons.

HINT:Don’t remove the wire

holders – clip off wire ties

instead. Carry extra wire ties to

reattach wire harnesses.

NOTE:Some control modules have been

replaced since fault codes stored in

module or motor control can’t be cleared.

Modules are operating properly and

shouldn’t be replaced to clear fault codes.

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Disassembly

Disassembly –

–Top & Rear Panels (1)

Top & Rear Panels (1)

To remove rear panel to

access drive motor and

rear of drum, remove

(18) T-20 screws.

There’s no need to

remove the top rear

panel (with “H” & “C”

stampings).

To remove top panel (for

easier parts access),

remove (3) T-20 screws

and slide panel to rear of

washer.

Remove top panel

Remove top panel screws

Rear

panel

Top panel removed

Rear panel removed

T-20 screws

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Disassembly

Disassembly –

–Tub, Drum & Dampers

Tub, Drum & Dampers

HINT:Unlike WFL2060 & WFR2460 washers, no clips

hold tubs together – no drilling or cutting is needed.

Outer drum (tub)

The tub consists of two durable Polinox plastic shells

screwed to each other.

To remove outer tub:

1. Disconnect wire harnesses (as needed) – wire ties

can be cut off, but clips shouldn’t be cut.

2. Remove front panel, rear panel, fascia panel (with

detergent dispenser) and top panel.

3. Remove door seal, top counterweight and both side

counterweights.

4. Disconnect dampers from tub and slip belt off of tub.

5. Remove tub through rear of washer.

6. Remove (18) T-25 Torx screws holding front & rear

tubs together.

HINT:When installing outer tub bolts, screw them in by

hand onto the first thread. Do not overtighten or cross-

thread them.

NOTE:Rear drum bearings are factory press fit into

rear outer tubs and cannot be removed or serviced. Removing

tub screws

Damper

Removing front of tub

T-25 screws

Comparing

tub resins

All washers starting with index __/04 have new resin tubs, front

and rear, with a translucent beige-tan color compared to older

blue-white tubs. To avoid leaking, tubs must have the same

resin front and rear, whether older blue-white tubs or new

beige-tan tubs – front/rear tub resin types cannot be mixed.

NOTE: You can see your fingers through new resin tubs

OldNew

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Disassembly

Disassembly –

–Drum Drive Motor

Drum Drive Motor

To remove drum drive motors:

• Remove rear panel

• Remove rear tub spring

• Remove drum belt

• Disconnect wire harnesses

• Remove two motor bolts, then pull motor out

toward rear of washer

WARNING: The drum drive motor & tub are grounded

through the motor control. Since the tub is plastic and the

motor is isolated from the frame, Its critical the ground

leads from the tub, drive motor & motor control are

connected properly.

Drum drive

motor

Rear tub

spring

10mm bolts

HINT: Drum drive motors and controls have changed a

few times – motors and motor controls can’t be mixed.

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To remove drain pumps:

• Remove front panel

• Loosen and remove hoses

• Disconnect green door latch release cord.

• Disconnect wire harness

• Carefully slide pump toward rear of washer,

then lift it out of washer (taking care to not

damage the four rubber feet).

Disassembly

Disassembly –

–Drain Pump

Drain Pump

HINT: Drain pumps are mounted on

four rubber feet to dampen vibration &

noise. To remove drain pumps,

carefully slide them toward rear of

washers. To install them, carefully

insert all four feet into notches in

washer base, then slide them forward.

Drain

pump

Note four mounting feet

Drain

pump

Current production pumps are beige

color – earlier WFMC pumps were black.

CAUTION: If opening drain pump

access cover, take care to not get

cut on front panel opening.

Rear access is best

for most repairs.

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Disassembly

Disassembly –

–Front Panel (1)

Front Panel (1)

Remove door latch screws Carefully remove front shield Removing front shield

Remove hinge cover screws Remove hinge screws Remove door seal spring

Rear access is best

for most repairs. Hinges cannot

be reversed.

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Disassembly

Disassembly –

–Front Panel (2)

Front Panel (2)

Front panel tab

Remove front panel

Remove top front panel screws Remove bottom front panel screws Note front panel mounting tabs

HINT:Removing front panel at this point will make

removing front counterweights easier.

HINT:Front panels are mounted using six (6) plastic tabs

– three (3) on each side. Lift front panels up to remove

them. When reassembling front panels, carefully align tabs

and don’t use excessive force to avoid breaking tabs.

HINT:Most washer screws require T-20 Torx

screwdrivers.

T-20 screws

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WFMC Service Tips

WFMC Service Tips –

–Installing Door Seals

Installing Door Seals

Certain repairs can involve removing or disconnecting the door seal (gasket) for access. To insure proper

washer operation and prevent leaking, door seals must be reinstalled correctly.

To install door seals:

1) Align door seal so notch (for spring) at front is centered

under bottom of door.

2) Carefully push rear of seal over front of tub so seal

properly seats onto tub.

3) Stretch rear spring clamp over seal and insert into

notch at rear of seal.

4) Using small hose clamp, attach dispenser hose to seal.

5) Work front seal lip over front shield flange (so lip

“snaps” in). Tug around entire seal to check if seated.

6) Align clamp spring at door bottom, then insert front

spring clamp into notch of entire left half of door seal

(180º from top to bottom).

7) While pulling right side of spring using needlenosed

pliers, pull clamp into right side seal notch, then

carefully release spring. Hold clamp next to front

shield so clamp won’t pull seal off.

NOTE:Check to make sure seal is

seated after installation so no

leaking will occur.

TIP:Left-handed servicers -- start

the front spring clamp on the right

side and pull the spring to the left.

Inner

spring

Dispenser

hose



Make sure seal is

properly seated on

front shield flange



Place spring clamp

over left half of

seal in notch

Keep clamp

spring over notch

at seal bottom

Make sure clamp doesn’t

pull seal off front shield



Carefully pull spring to

right & put clamp into

right side seal notch

Hold clamp

next to

front shield

Center notch in bottom of

seal (for spring) under

bottom of door



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