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1. Connect vacuum hose to tool.

2. With the power switch in the “O” (Off) position,

plug power cord of the tool (also turned off) into

the  electrical  outlet  on  the  vacuum  cleaner’s

motor head.

3. Set the AUTO/OFF/ON switch to AUTO. A very

brief running operation of the vacuum will occur. 

This is normal. Now the vacuum will operate “On 

Demand”.

4. Turn tool on and the vacuum cleaner will start

automatically a few seconds later. Turn tool off

and vacuum will stop automatically a few sec-

onds later.

Utility Outlet Load - vs - Vacuum Performance

The unique design of the “On Demand” feature of 

this unit will cause the vacuum performance to vary 

with the amount of current drawn from the utility 

outlet. The electronic circuit automatically adjusts 

the power of the vacuum unit to compensate for 

the power being drawn from the utility outlet. This 

adjustment allows the total system current draw to 

stay within the safety regulatory agencies maximum 

of 12 Amps. What ever the amount of current is 

being drawn for utility work, the remainder from 12 

Amps is allowed to the vacuum unit to provide the 

maximum allowable vacuum performance during 

the  work. As  soon  as  the  utility  work  stops,  the 

vacuum returns to full power during the delay period 

before turning off.

WARNING 

To reduce the

risk of injury, always unplug the tool before 
attaching or removing accessories. Use 
only specifi cally recommended accessories.  
Others may be hazardous.

Maintaining Tools

Keep your tool in good repair by adopting a regular 

maintenance  program.  Before  use,  examine  the 

general  condition  of  your  tool.  Inspect  guards, 

switches,  tool  cord  set  and  extension  cord  for 

damage.  Check  for  loose  screws,  misalignment, 

binding of moving parts, improper mounting, bro-

ken parts and any other condition that may affect 

its safe operation. If abnormal noise or vibration 

occurs, turn the tool off immediately and have the 

problem corrected before further use. Do not use a 

damaged tool. Tag damaged tools “DO NOT USE” 

until repaired (see “Repairs”).

Under normal conditions, relubrication is not neces-

sary until the motor brushes need to be replaced. 

After six months to one year, depending on use, 

return your tool to the nearest

 MILWAUKEE

 service 

facility for the following:

• Lubrication

• Brush inspection and replacement

• Mechanical inspection and cleaning (gears, spin-

dles, bearings, housing, etc.)

• Electrical inspection (switch, cord, armature, etc.)

• Testing to assure proper mechanical and electrical 

operation

WARNING 

To reduce the

risk of injury, electric shock and damage to 
the tool, never immerse your tool in liquid or 
allow a liquid to fl ow inside the tool.

WARNING 

To reduce

the risk of injury, always unplug your tool 
before performing any maintenance. Never 
disassemble the tool or try to do any rewir-
ing on the tool’s electrical system. Contact a 
MILWAUKEE
 service facility for ALL repairs.

Cleaning

Clean dust and debris from vents. Keep the tool 

handles clean, dry and free of oil or grease. Use 

only  mild  soap  and  a  damp  cloth  to  clean  your 

tool  since  certain  cleaning  agents  and  solvents 

are harmful to plastics and other insulated parts. 

Some of these include: gasoline, turpentine, lacquer 

thinner, paint thinner, chlorinated cleaning solvents, 

ammonia  and  household  detergents  containing 

ammonia.  Never  use  fl ammable  or  combustible 

solvents around tools.

Storage

Before storing the vacuum cleaner, always empty 

and clean the tank. Never allow debris to sit in 

the tank for any extended period of time. 

The 

vacuum cleaner should be stored indoors.

Repairs

If your tool is damaged, return the entire tool to the 

nearest service center.

MAINTENANCE

ACCESSORIES

Using the vacuums (without the automatic 
switch) as dust collection device for a tool

1. Connect vacuum hose to tool’s dust collection port.

2. Turn the vacuum cleaner on.

3. Turn on tool.

To use the vacuum cleaner as an automatic 
dust collection device for a tool (with Cat. No. 
8936-20 only)

WARNING

 To reduce the

risk of fi re, electric shock or injury: Do not 
plug any tool or appliance rated over 8 amps 
into the outlet on the vacuum cleaner. Check 
nameplate of the tool for the amp rating. To 
reduce the risk of injury, tool must be turned 
off before placing switch in the auto position. 

Learn more about wet and dry vacuums on our website.

Summary of Contents for 8936-20

Page 1: ...TO REDUCE THE RISK OF INJURY USER MUST READ AND UNDERSTAND OPERATOR S MANUAL OPERATOR S MANUAL HEAVY DUTY COMMERCIAL VACUUM Cat No No de cat 8936 20 8938 20 8950 8955 ...

Page 2: ...in electric shock fire and or serious injury When using an electrical appliance basic precautions should always be followed including the following READ ALL INSTRUCTIONS BEFORE USING THIS APPLIANCE READ AND SAVE ALL INSTRUCTIONS FOR FUTURE USE GROUNDING INSTRUCTIONS WARNING Improper connection of the equipment ground ing conductor can result in a risk of electric shock Check with a quali fied elec...

Page 3: ...u will need 2 1 2 inch open end wrenches 2 7 16 inch open end wrenches or a socket set and a hammer 1 Place wheels on rear frame B by tapping in the axle C fitting the wheel D on the axle and tapping a cap nut E on with a hammer 2 Align front frame F and rear frame B so that they fit together and fit lip of tank H into the grooves in front and rear frames 3 Secure frame B and F to the tank by plac...

Page 4: ... vacu um dry material and you are using the foam filter sleeve you must also use the cloth filter 6 Replace motor head and snap down tank latches Fig 10 WARNING To reduce the risk of injury always unplug the tool before removing the motor head Fig 5 Fig 6 Fig 9 Fig 8 Fig 7 dry materials wet materials Fig 11 Vacuuming wet or dry materials When vacuuming dry materials ei ther the filter car tridge o...

Page 5: ...ions relubrication is not neces sary until the motor brushes need to be replaced After six months to one year depending on use return your tool to the nearest MILWAUKEE service facility for the following Lubrication Brush inspection and replacement Mechanical inspection and cleaning gears spin dles bearings housing etc Electrical inspection switch cord armature etc Testing to assure proper mechani...

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