Milwaukee 8960-20 Guida all'installazione

REPAIR

INSTRUCTIONS

for Model 8960-20

No. 8960-20

8 Gallon Dust Extractor

MILWAUKEE TOOL www.milwaukeetool.com

13135 W. LISBON RD., BROOKFIELD, WI 53005

58-92-8960 042017 Drwg. 1

Index

A. Safety issues 4

B. Technical data 5

C. Construction / function 6

D. Troubleshooting 10

E. Service / repair 12

F. Spare parts 27

G. Electrical diagrammes 32

Construction

Preface

In this manual you will find

the essentials you need to

know when repairing wet and

dry cleaner 8960-20.

When carrying out repairs,

make sure you have a suitable

workbench or the like with the

necessary power supply

available.

If you determine an error in

operation, be sure to refer the

customer to the user manual.

A fault in the equipment

can have a number of causes.

Chapter D Troubleshooting

will help you here.

Use the illustrated spare

parts lists for your repairs.

These show you the location

of the individual parts and the

sequence in which they are

assembled.

Read the technical infor-

mation sheets. These will tell

you about any technical modi-

fications made after publica-

tion of this repair manual.

Technical information sheets

are a supplement to the spare

parts list until a follow-on publi-

cation.

Repair manuals and technical

information sheets should be

available at the site where re-

pairs are carried out. Further

repair manuals of the 8960-20

may be necessary for repairs

to the equipment.

It is not permitted to give the

repair manuals to third parties.

Use original MILWAUKEE

parts only!

Safety instructions marked

with this symbol in this man-

ual must be observed to

prevent danger to persons.

This symbol is used to

mark safety instructions

that must be observed to

prevent damage to the

equipment and degradation

of performance.

This symbol indicates tips

and instructions to simplify

work and to ensure safe

operation.

Symbols used to mark

instructions

Safety issues

Observe national safety

directives and regulations

for the electrical engineer-

ing trade, in particular:

IEC 60335-2-69

EN 60335-2-69

DIN VDE 105 part 1:

operation of electrical

power installations.

DIN VDE 0701/0702:

repair, modification and

testing of electrical installa-

tions.

Before starting the equip-

ment, be sure to read the

accompanying user

manual, and keep it close

as reference.

The equipment should

only be used by persons

who have been instructed

in its use and are author-

ized to do so.

Repairs should only be

made by someone who has

received proper instruc ons

for the job or who is a quali-

fed electrician.

WARNING:

The upper secon of the

machine contains live com-

ponents. Contact with live

components leads to seri-

ous or even fatal injuries.

Always disconnect the

mains plug before disassem-

bly.

For your own safety.

ESD (electrosta c discharge)

Observe the following ESD precautions before any

repair of or near electronic parts:

• Touch the protective conductor to discharge your own body.

• Possibly wear an anti-static wrist strap.

• Use a conducting floor or tabletop.

• Never touch a circuit board or electronic components - always hold them by the

plastic or insulation.

• Transport electronic parts in conductive packaging (e.g. special ESD packages).



Technical data

Possible Voltage V 110-120

Power P IECW HP 890/7,4A 1,2

Connected Load for Appliance Socket W 550/4,6A

Mains Frequency Hz 50/60

Fuse A 15

Protection Grade (moist, dust) IPX4

Protection Class (electrical) I

Maximum Airflow* l/s m³/h CFM 70 252 148

Maximum Vacuum kPa hPa in H2O23 230 92

Sound Pressure Level L PA (IEC 60335-2-69)dB(A) 69 ± 2

Working Sound Level dB(A) 60 ± 2

Vibration ISO 5349 anm/s² <2,5

Weight kg lb 14,5 31,9

Filter Surface Area m/s² 0,5

Dust Class -

Model 8960-20

Control panel

PCBA

Filter cleaning

system

Full tank sensor

Socket for power tools

Motor speed control

Rotary on/off switch

Control panel

Hatchback

Motor

unit

Buzzer

alarm

Flow

sensor

Solenoid

actuator

Construction

30 ltr container

Main filter element, PTFE

Floater - full tank sensor

for liquids

AntiStatic grounding clip

Container clamp

Air flow cover

Function

Airflow

Function

Even with extremely fine dust the automatic filter cleaning function allows you to work constantly

with the same suction performance without having to manually clean the filter.

A powerful reversed air pulse is activated every 15 seconds keeping the air flow on a high level.

The air pulse is created by a solenoid connected to a piston with double-valve. When the valve is

opened a pulse is created by difference in pressure between outside and inside of container (dirty

side of filter). The negative pressure is reduced very quickly and a reversed air pulse flows through

the filter. The dirt adhered to the filter is blown and shaken off, causing it to fall back into the tank.

Automatic filter cleaning system

Double valve system Solenoid actuator

Troubleshooting

Check:

-Mains voltage present?

- Power cord plugged into socket?

- Switch set to “I” ?

Connect switch - PCB - motor.

Is motor running?

Connect motor directly to

mains. Is motor working?

Replace motor.

Connect motor directly to

switch. Is motor running?

Yes

Motor not working with switch set to ”I”

Yes

Check connections and

replace switch if needed.

Check connections and

replace PCB if needed.

Check if machine is working

correctly. Calibrate flow sen-

Job done!! 

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