Bosch Power Tools CET4-20W, CET3-10 User Manual

IMPORTANT: IMPORTANT : IMPORTANTE: Read Before Using Lire avant usage Leer antes de usar

Operating/Safety Instructions Consignes de fonctionnement/sécurité Instrucciones de funcionamiento y seguridad

CET3-10

CET4-20

CET4-20W

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-E/F/S-190609

GenerAl sAfety rules

DANGER

result in electric shock, re, serious personal injury or death.

All users and employers/owners must read and understand all instructions in this manual before

operating or maintaining this compressor.

Failure to follow all instructions listed below may

sAVe tHese InstruCtIons

Work AreA

Keep your work area clean and well lit.

benches and dark areas increase the risks of

accidents, electric shock, re, and injury to persons.

Do not operate compressor in explosive atmospheres,

such as in the presence of ammable liquids, gases,

or dust. Keep work area well ventilated. Always locate the compressor at least 20 ft. (6.1 m) away from work

area if spraying ammable materials. DO NOT SMOKE if spraying ammable materials.

able to create sparks which may ignite the dust or fumes. Never use the compressor in sites containing lacquer, paint, benzene, thinner, gasoline, gases, adhesive agents, and other materials which are combustible or explosive. A longer hose may be required.

Always operate the compressor in a well ventilated area. Follow all safety instructions and use a respirator as directed in the safety instructions provided with

the material to be sprayed.

such as paint, paint solvents, paint remover, insecticides, weed killers, etc contain harmful vapors and poisons.

Keep bystanders, children, and visitors away while

operating a compressor. Do not allow children to operate compressor.

of control of the tools which may cause injury to

bystanders.

Never engage in horseplay with the compressor.

Respect the compressor as a working implement.

Always operate the compressor from a stable secure

position. Never operate the compressor from a roof or

table.

Use additional air hose to allow tools to reach

high locations.

Equip the work area with a suitable re extinguisher.

Do not remove, tamper with, or otherwise cause

the tool operating controls to become disabled or inoperable.

and may result in the risk of injury.

Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep your hair, clothing, and gloves away from moving parts.

jewelry, or long hair can be caught in moving parts

This will cause the tool to work irregularly

Distractions may cause loss

PersonAl sAfety

The compressor is

Some sprayed materials

Cluttered

Loose clothes,

and increases the risk of injury.

Always wear eye and ear protection when using this

tool. Use additional personal protective equipment

as appropriate when operating this tool.

and others in work area must wear safety glasses. Prolonged exposure to high intensity noise is able to cause hearing loss. Dust mask, non-skid safety shoes, hard hat and other personal protective equipment, must be used for appropriate conditions.

Do not operate the compressor unless you are familiar with controls.

operate compressor in an unsafe manner, injuring

themselves or others.

Keep handles and controls dry, clean and free from oil and grease.

tool.

Stay alert. Watch what you are doing, and use

common sense when operating a compressor. Do not

use compressor while tired or under the inuence of

drugs, alcohol, or medication.

while operating the compressor may result in serious

personal injury.

Do not direct air stream at people or animals.

pressure air can propel dust and debris at high speed. Compressed air from a compressor can contain water, oil, metal particles or other

contaminants which can cause serious injury.

Do not use compressed air for breathing or

respiration. Never inhale air directly from compressor

or from breathing apparatus connected to compressor.

Compressed air stream may contain carbon monoxide, toxic vapors or solid particles from air tank

which if inhaled could cause serious injury or death.

Use care when touching exposed metal surfaces of compressor.

head, engine/motor, and tubing will remain hot even after the air compressor has been shut down. Allow compressor to cool before moving or attempting maintenance.

Do not stand on compressor. Keep proper footing

and balance at all times.

balance enable better control of tools in unexpected situations.

Make sure air hose is free of snags and obstructions. Do not attach an air hose or tool to your body.

Users unfamiliar with controls may

Slippery hands cannot safely control the

A moment of inattention

Many components such as compressor

Proper footing and

Operators

High

Entangled or snarled hoses can cause a loss of balance or footing in addition to unintentional tool operation. Attach the hose to the structure to reduce the risk of loss of balance if the hose shifts.

Do not abuse the air hose. Protect all hoses from kinks, restrictions, solvents or sharp objects. Keep air

hose away from heat, oil, sharp edges or moving parts.

Replace damaged hoses immediately. Damaged hoses can burst or whip around work area.

Only use hoses with a minimum rating of 200 PSI.

of hoses with a high pressure rating reduce the risk

of injury from a hose bursting.

Firmly grasp hose in hand when installing hoses.

hose is not held rmly or correctly installed, hose may whip and injure personnel in the operating area.

Use care when lifting and carrying the compressor.

Some compressors are too heavy to be lifted by one person. Get assistance before attempting to lift a

compressor to reduce the risk of injury.

When moving or loading a wheeled compressor ensure

that the compressor is always on a level surface.

compressor is placed on a sloped surface, it may

move unexpectedly and result in personal injury.

This product contains chemicals, including lead,

known to the State of California to cause birth defects

and other reproductive harm.

using.

tool use And CAre

Use this compressor and all accessories in accordance with the instructions.

must be used for the purpose for which they are designed. Use of the compressor for operations other than what is described in this manual can result in a hazardous situation.

Use only accessories that are recommended by BOSCH for your particular model.

may be recommended for a particular model tool may not be suitable on other model tools and may

result in personal injury.

Before each use, inspect all ttings, hoses, pipes,

connections of the compressor. Do not operate if any portion of the compressor is loose, missing, damaged, malfunctioning, disconnected or altered. Never use a compressor that appears damaged or is operating

abnormally.

operating unusually and/or making strange noises, stop using it immediately and contact your local BOSCH service center. There is a risk of bursting if the compressor is damaged.

Before each use inspect compressor for signs of leaks or damage. If leaks are found in the compressor pump,

air tanks or tubing, replace compressor immediately.

If the compressor appears to be

Compressor and accessories

Wash hands after

Accessories that

Use

If the

Never attempt repair leaks, weld or make

modications to the air tank or other uid conning

parts as there is a risk of bursting.

Do not attempt to operate this air compressor without

rst verifying the oil level in the crankcase. This

compressor is shipped with oil in the crankcase.

Serious damage of the compressor can result from even momentary operation without proper lubrication.

Never operate the compressor without the safety valve. Verify operation of the safety valve on a daily

basis. Do not use the safety valve for complete tank

drainage.

pressure to reduce the risk of bursting.

Never operate compressor without all guards and other safety features in place and performing intended function.

of guard or safety feature, be sure to replace the guard or safety feature before resuming operation of the compressor. Replace damaged guards or safety features immediately.

Never touch moving parts.

your body near compressor moving parts. Do not

reach around guards to reduce the risk of injury.

Do not operate compressor without the air lter.

Filters prevent large particles from entering the air stream and damaging compressor internal components.

Do not allow particulates such as sawdust to fall into crankcase when crankcase is open for inspection.

Particulates in oil may reduce compressor life.

Do not use a detergent oil in crankcase.

oils will leave deposits on internal compressor components reducing compressor life and components.

Do not use compressor for unattended operation.

Always remain in area when compressor is operating and turn off compressor when not in use to reduce

the risk of re.

Never place objects on top or next to compressor.

Locate compressor at least 12 in. (30 cm) away from

all obstructions.

ventilation openings can cause overheating and

could cause a re.

Do not operate the compressor with any power source

other than that specied in the tool operating/safety

instructions.

result in malfunctions of the compressor and the

power source which may lead to serious injury of you

or others in your surroundings.

Follow all recommendations for sizes of hoses, ttings

The safety valve is designed to relieve tank

If maintenance or servicing requires removal

Do not place any part of

Detergent

Restricting any of the compressor’s

Use of alternative power sources may

and other compressed air accessories.

sized tting or components may result in the risk of injury or property damage

Never move the compressor by pulling on a hose.

compressor, air ttings and the air hose may become damaged and burst.

Check air supply lines for restrictions before adjusting

tool.

Air volume is as important as air pressure.

Restricted air ow will prevent the tools from

operating as designed.

Never exceed the maximum allowable pressure

rating marked on tools and attachments. Do not use

compressor to inate low pressure objects such

as toys.

pressure of tools and attachments can cause them to burst. The correct pressure is the lowest pressure

that will do the job.

Drain condensate from air tanks daily with drain valve.

Draining water from the air compressor reduces the risk of air tank corrosion. Corroded air tanks increase the risk of bursting.

Stop the compressor, drain air tanks and allow it to cool before making adjustments, moving the

compressor, leaving the work area, performing maintenance or storing the compressor.

precautionary safety measures reduce a risk of

injury.

Do not modify this compressor or operate compressor at pressures or speeds greater than designed

alteration or modication is a misuse and may result in a dangerous condition such as re or bursting.

When transporting compressor, keep level and place

on a protective mat. Do not place compressor on its side.

danger to personnel from oil fumes.

Exceeding the maximum recommended

Such precautions reduce the risk of re or

Improperly

The

Such

. Any

serVICe

Maintenance performed by unauthorized personnel

may result in misplacing of the internal components which could cause serious hazard.

that all compressor service be performed by a BOSCH factory service center or authorized BOSCH service station.

Develop a periodic maintenance schedule for your

tool. When cleaning a compressor be careful not to disassemble any portion of the tool since internal components may be misplaced or safety components may be improperly mounted.

such as gasoline, carbon tetrachloride, ammonia, etc. may damage plastic parts and o-rings.

When servicing the compressor, use only recommended BOSCH replacement parts. Follow

instructions in the Maintenance section of this manual.

Maintenance Instructions can cause a risk of injury.

Replace missing or damaged warning labels.

schematic for correct placement and part number.

Maintain compressor with care. Keep the compressor

clean and lubricated.

less likely to break and cause injury. Any alteration or modication is a misuse and may result in a

dangerous condition. Clean the tool at least daily and lubricate as required.

When not in use, store the compressor out of reach

of children and other personnel unfamiliar with compressor operation.

should be disconnected and stored in a dry place. Vent the air tank. Keep out of reach of children. Lock the storage area. Compressor can be dangerous in the hands of users unfamiliar with its operation.

Use of unauthorized parts or failure to follow

Properly maintained tools are

When not in use, the tool

We recommend

Certain cleaning agents

Refer to

sAfety rules for eleCtrIC ComPressors

Power cord plugs must match the outlet. Never modify the plug in any way. Do not use any adapter plugs with earthed (grounded) power tools. Unmodied plugs and matching outlets will

reduce risk of electric shock.

Avoid body contact with earthed or grounded

surfaces such as pipes, radiators, ranges and refrigerators. There is an increased risk of electric

shock if your body is earthed or grounded.

Do not abuse the cord. Never use the cord for

carrying, pulling or unplugging the power tool. Keep cord away from heat, oil, sharp edges or moving parts. Replace damaged cord immediately.

Damaged or entangled cords increase the risk of electric shock.

Do not expose this compressor to rain. Do not use in damp or wet locations. Moisture increases

the risk of electric shock with this equipment. Do not touch plug with wet hands. Moisture

increases the risk of electric shock with this equipment.

Keep all electrical connections dry and off the ground. Do not allow electrical connections to lay in water or in such a position where water could come into contact with cord and connection. Moisture increases the risk of electric

shock with this equipment.

When operating a power tool outdoors, use an extension cord suitable for outdoor use and with

correct amperage capacity. Use of a cord rated for outdoor use reduces the risk of electric shock.

Always disconnect compressor from power supply, vent air tanks, and allow compressor to

cool before servicing. Compressors with automatic pressure controls can restart at any time.

Always turn off the motor when not in use and

before moving compressor. Stopping the motor prevents unintentional starting of the compressor.

Some dust created by power sanding, sawing,

grinding, drilling, and other construction activities contains chemicals known to cause

cancer, birth defects or other reproductive harm. Some examples of these chemicals are:

• Lead from lead-based paints,

• Crystalline silica from bricks and cement and other

masonry products, and

• Arsenic and chromium from chemically treated

lumber. Your risk from these exposures varies, depending on

how often you do this type of work. To reduce your exposure to these chemicals: work in a well ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to

lter out microscopic particles.

sAVe tHese InstruCtIons

funCtIonAl desCrIPtIon And sPeCIfICAtIons

Specications: CET3-10

Product Size: 16” x 18” x 16.25” Weight: 57.3 lbs. HP: 1 CFM @ 100 psi: 2.6 RPM: 1700

dBA: 72 Recovery Time: 14 seconds Motor: 4-Pole Induction Drive Type: Direct Maintenance: Oil

Specications: CET4-20

Product Size: 16.25” x 17.75” x 19.75” Weight: 72.7 lbs. HP: 2 CFM @ 100 psi: 4.2 RPM: 3400

dBA: 80 Recovery Time: 12 sec. Motor: 2-Pole Induction Drive Type: Direct Maintenance: Oil

funCtIonAl desCrIPtIon And sPeCIfICAtIons

Specications: CET4-20W

Product Size: 22” x 21.5” x 19.75” (handle down) Weight: 84.9 lbs. HP: 2 CFM @ 100 psi: 4.9 RPM: 3400

1. Warning Label

2. Pressure Switch

3. Pump Discharge Line

4. Oil Dipstick

5. Air Compressor Pump

6. Thermal Overload

7. Pump Oil Fill Port

8. Pump Oil Drain

9. Air Filter

dBA: 80 Recovery Time: 10 sec. Motor: 2-Pole Induction Drive Type: Direct Maintenance: Oil

10. Check Valve

11. Electric Power Cord

12. Safety Release Valve

13. Pressure Gauge - Tank Psi

14. Pressure Regulator

15. Pressure Gauge - Outlet Psi

16. Outlet Fittings

17. Tank Drain Valve

Assembly / InstAllAtIon

CAUTION

WARNING

CAUTION

MAX

MIN

(A)

(B)

(D)

(C)

GROUNDING

GROUNDED OUTLET

GROUNDED OUTLET BOX

lubrICAtIon And oIl

Do not attempt to operate this air compressor without first verifying

the oil level in the crankcase. This compressor is

shipped with oil in the crankcase. Serious damage of the compressor can result from even momentary operation without proper lubrication.

Prior to each use, verify the crankcase oil level. An oil sight gauge with minimum and maximum oil level marks is provided with this compressor.

Always verify that the oil level is at the maximum mark in the oil sight gauge before operating this unit. Do not operate the pump with an inadequate or excessive amount of oil. The cost of failures which occur due to incorrect oil levels will not be covered under warranty.

To check the oil level: (see Fig. 1)

1. Place unit on a level surface.

2. Remove dipstick, wipe with a clean rag, replace in crankcase, then remove dipstick to inspect oil level.

3. If oil level is low, add as required, but do not exceed maximum oil level.

frame.

3. Place screw through washer (D) and thread screw into end of wheel spindle (C). Tighten screw to secure to spindle.

4. Repeat these steps for second wheel.

Fig. 2

GroundInG

This product must be grounded. In the event of an electrical short circuit, grounding reduces the risk of electric shock by providing an escape wire for the electric current. This product is equipped with a cord having a grounding wire with an appropriate grounding plug. The plug must be inserted into an outlet that is properly installed and grounded in accordance with all local codes and ordinances (see

Fig. 3).

Improper installation of the

grounding plug is able to result in

a risk of electric shock. When repair or replacement

Fig. 1

crank case is open for inspection. Particulates in oil

may reduce compressor life.

deposits on internal compressor components reducing compressor life and performance.

dIreCtIons for InstAllInG WHeels

1. Take wheel spindle (A) and thread into wheel bracket (B), which is welded to compressor frame. Tighten spindle with wrench to secure to frame.

2. Slide wheel onto wheel spindle. Ination stem for

wheel assembly should face toward the compressor

Do not allow particulates such as sawdust to fall into crank case when

Do not use a detergent oil in crankcase. Detergent oils will leave

(Cet4-20W only See Fig. 2)

of the cord or plug is required, do not connect the grounding wire to either flat blade terminal. The wire with insulation having an outer surface that is green with or without yellow stripes is the grounding wire.

Check with a qualied electrician or serviceman

when the grounding instructions are not completely understood, or when in doubt as to whether the product is properly grounded. Do not modify the plug

provided; if it does not t the outlet, have the proper outlet installed by a qualied electrician.

Fig. 3

WARNING

CAUTION

Assembly / InstAllAtIon

This product is for use on a nominal 120-V circuit and has a grounding plug similar to the plug illustrated on page 8. Only connect the product to an outlet having

the same conguration as the plug. Do not use an

adapter with this product.

extensIon Cords

Use only a 3-wire extension cord that has a 3-blade grounding plug, and a 3-slot receptacle that accepts the plug on the product. Make sure your extension cord is not damaged. When using an extension cord, be sure to use one heavy enough to carry the current your product draws.

Extension Cord Table 0 – 25 ft 25 – 50 ft. 14 ga. 12 ga.

RECOMMENDED SIZES OF EXTENSION CORDS The maximum recommend cord length is 50 feet with

a 12 gauge cord rating.

PrePArAtIon for use

Use this compressor and all accessories in accordance with

the instructions. Compressor and accessories

must be used for the purpose for which they are designed. Use of the compressor for operations other than what is described in this manual can result in a hazardous situation.

Fig. 4

If the safety release valve vents

under normal operating conditions, stop using the compressor immediately. Send your compressor for service. If

the safety release valve is venting the tanks the

pressure switch may need factory adjustment.

3. Plug the power cord into the correct branch circuit

receptacle.

See the “Grounding Section” for more information on the correct receptacle.

4. Open the drain valve to permit air to escape the

tank and prevent air pressure build up during the break-in period.

The drain valve is located on the control panel and is used to drain condensation from the tanks at the end of each use. Tank pressure is used to expel the water.

eleCtrIC motor

Initial Set-Up – Break-in Procedure

Before rst use of this air compressor or after the

compressor pump/motor has been replaced, perform the following:

1. Ensure the power switch is in the OFF position. This air compressor has an integrated power and

pressure switch. When the power is ON the pressure switch will automatically start the compressor motor any time the tank pressure drops below the factory set cut-in pressure and stop the motor when the tank pressure stops at the factory set cut-out pressure.

2. Ensure safety valve is functioning properly by pulling on the valve ring and allow the valve to reset (see Fig. 4).

The safety valve is designed to protect against high pressure by releasing high pressure air from the air tank when its factory set pressure (slightly higher than the pressure switch cut-out setting) is exceeded.

5. Move the power switch to the ON position. The compressor will start.

6. Run the compressor for 20 minutes.

7. After 20 minutes, close the drain valve. The tank will ll to cut-out pressure and the compressor motor will stop.

8. Move the power switch to the OFF position and unplug the compressor.

9. Pull the safety valve and allow to vent until tank pressure is under 20 psi.

10. Open the drain valve to permit air to escape the tank and to drain any moisture or particles from tank. When tank is empty, close drain.

11. Compressor is now ready for rst use.

Change the crankcase oil after the

first 50 hours of operation and as recommended in the maintenance section of this manual. Failure to change oil according to

maintenance schedule will reduce compressor life and performance.

WARNING

CAUTION

WARNING

oPerAtIon

Reset Switch (A)

Drain Valve (A)

Regulator (C)

1/4” Outlet fittings (B)

stArtInG tHe ComPressor

CET3-10 CET4-20 and CET4-20W

Fig. 5

1. Position compressor on a at surface or one with

an inclination of 10° or less, in a well ventilated area away from vapors.

2. Ensure all covers and labels are in place, legible (for labels) and securely mounted. Do not use

compressor until all items have been veried.

3. Ensure the power switch is in the OFF position.

4. Plug the power cord into the correct branch circuit receptacle. See the “Grounding Section” for more information on the correct receptacle.

5. Ensure drain valve is closed in the horizontal position (A).

8. Attach hoses to compressor (B).

9. Turn the power to ON, and verify that the compressor

is functioning. Adjust the air pressure the desired

level for the accessory as described in adjusting regulator (C). Verify that the compressor motor stops when cut out pressure is reached.

motor tHermAl Cut out

The thermal protector operates to stop the motor when a problem such as a motor overload, etc. occurs. If the motor should stop during operation, proceed as follows:

1. Turn the pressure switch lever to the OFF position and disconnect the plug from the receptacle.

2. If the extension cord does not conform to the

specications given on page 9, replace with an

extension cord such as that shown on page 9. If the

capacity of the power supply is insufcient, increase

the power supply capacity to remove the cause of

a ow of excessive current (over-current).

3. Wait approximately 5 minutes, then press the reset switch (A) of the thermal protector (see Fig. 6).

The drain valve is located at the base of the control panel and is used to drain condensation from the tanks at the end of each use. Tank pressure is used to expel the water.

6. Ensure safety valve is functioning properly by pulling on the valve ring and allow the valve to reset.

If the safety valve vents under

normal operating conditions, stop using the compressor immediately and send your compressor for service. If the safety valve is

venting the tanks the pressure switch may need

factory adjustment.

7. Check pump oil level.

Do not operate without oil or with

damage the compressor pump.

inadequate oil. Low oil levels may

4. Start the compressor. If the motor still stops during operation, please contact the service center.

Many components such as compressor head, engine/motor, and tubing will remain hot even after the air compressor has been shut down. Allow compressor to cool before moving or attempting maintenance.

Fig. 6

Hot surfACes

Use care when touching exposed metal surfaces of compressor.

WARNING

oPerAtIon

Regulator (A)

Regulated Pressure Gauge (B)

AdjustInG reGulAtor

This compressor is provided with an internal regulator that controls the output pressure of two female quick connect couplers. Regulated pressure will be equal to or less than tank pressure depending on user setting.

Fig. 8

oPerAtInG temPerAtures

Operating temperatures are between 32°F and 104°F (0°C and 40°C). If operating outside recommended

temperatures, unit may have difculity starting and

will cause additional wear on components.

Fig. 7

To adjust regulated pressure (see Fig. 7):

1. Pull regulator knob out (A).

2. To increase pressure, turn clockwise.

3. To decrease pressure, turn counter clockwise.

4. When desired pressure is set, push regulator knob in to lock pressure.

5. Regulated pressure gauge is displayed as (B).

ConneCtInG AIr suPPly

Firmly grasp the hose in hand when installing hoses. If hose is

not held firmly or correctly installed hose may whip and injure personnel in the operating area.

INSTALLING HOSES (See Fig. 8):

1. Grasp the hose at the quick connect plug and push the plug into the quick connect body. Coupler will snap into place.

2. Grasp the hose and pull to ensure coupler is seated.

Disconnect the compressor from the power source, drain air tanks

and allow it to cool before making adjustments,

moving the compressor, leaving the work area, performing maintenance or storing the compressor. Such precautionary safety measures

reduce the risk of injury.

sHuttInG doWn tHe ComPressor

1. Move On/Off switch to the OFF position.

2. Turn regulator until outlet pressure gauge reads 0 psi.

3. Remove hose and assembly. See disconnecting air supply below.

4. Drain air from the air tanks by releasing air by pulling the safety release valve.

5. Once the air tank pressure is under 20 psi, open the drain valve on the control panel to drain moisture from the tanks (See draining tanks on page 12).

6. Allow the compressor to cool down before storing.

dIsConneCtInG AIr suPPly

DISCONNECTING HOSES (See Fig. 8)

1. Ensure regulated pressure gauge reads 0 psi (0 kPa).

2. Pull coupler on quick connect body back to release quick connect plug on hose.

WARNING

oPerAtIon

MAX

MIN

(B)

(A)

drAInInG tAnks

1. Place the compressor on a level surface.

Ensure that the compressor is on a level surface. If compressor is not

level, water will not drain from tanks causing corrosion, which may cause the tanks to burst.

2. If pressure is greater than 20 psi, use safety release valve to reduce tank pressure.

Do not open drain valve with pressure greater than 20 psi in

mAIntenAnCe

Maintenance performed by

unauthorized personnel may result in misplacing of the internal components which could cause serious hazard. We

recommend that all compressor service be performed by a BOSCH factory service center or authorized BOSCH service station.

Your air compressor requires periodic maintenance according to the maintenance schedule outlined on the next page, in order to keep your compressor in peak condition.

Use a soapy water solution to inspect compressor for leaks. If leaks are found in the compressor pump, air tanks or tubing, replace compressor immediately. Never attempt repair leaks, weld or make

modications to the air tank or other uid conning

parts as there is a risk of bursting.

To check the air lter, unscrew the air lter from the compressor and visually inspect. If the lter appears to be clogged, replace the lter. After inspection screw the air lter back on the compressor (See Fig. 9).

tanks. Such precautionary measures reduce the risk

of injury.

3. Ensure that no personnel are in the drain discharge area in front of compressor.

Do not direct air stream at people or animals. High pressure air can

propel dust and debris at high speed. Compressor air from the compressor can contain water, oil, metal particles, or other contaminants which can cause

serious injury.

4. Turn drain valve on control panel 90° counterclockwise. When empty, close valve.

serVICe

CHANGING OIL (See Fig. 10):

1. Make sure the pump is cool to avoid burn risk.

2. Take out the oil dipstick (A).

3. Prepare a suitable container to capture the oil from the crankcase.

4. Remove crankcase drain plug (B) and allow used oil to drain in the container.

5. Replace drain plug.

6. Return oil to recycling center or dispose of in accordance with local regulations.

7. Rell crankcase with fresh oil. Fill oil until it reads

to maximum level of oil dipstick.

8. Replace oil dipstick (A).

Fig. 10

Contact your BOSCH service center for instructions and user replaceable parts. For all other repairs contact your BOSCH service center.

Fig. 9

mAIntenAnCe

WARNING

CleAnInG

When cleaning a compressor be careful not to disassemble any

portion of the tool since internal components

may be misplaced or safety components may be

improperly mounted.

Certain cleaning agents such as gasoline, carbon tetrachloride, ammonia, etc. may damage plastic parts and o-rings.

Periodically clean the compressor tool with soapy water and a damp cloth.

storAGe

When not in use, the compressor should be disconnected and stored in a warm and dry place.

If unit is operated in an excessively dirty or dusty area, increase the frequency of all scheduled maintenance

items.

Recommendation Daily Weekly Every 200 hours Check for proper oil level(s) and oil leaks X Drain moisture from tanks daily or after each use X Ensure all safety guards are correctly and securely attached X Clean the cooling surfaces of the compressor X Inspect air intake lter X Check safety valves by pulling on rings X Check system for air leaks X Change pump oil X Replace air lter X

Coil the electric cord and place within frame for protection.

When not in use, store the

compressor out of reach of children and other personnel unfamiliar with compressor operation. Lock the storage area.

Compressor can be dangerous in the hands of users unfamiliar with its operation.

loAdInG/unloAdInG

Use care when lifting and carrying

the compressor. Some

compressors are too heavy to be lifted by one person. Get assistance before attempting to liff compressor to reduce the risk of injury.

trouble sHootInG

This section provides a list of the more frequently encountered malfunctions, their causes and corrective actions. The operator or maintenance personnel can perform some corrective actions, and others may

require the assistance of a qualied Bosch technician or your dealer.

PROBLEM SYMPTOMS RESOLUTION

Excessive air tank pressure – safety valve pops off

Air leaks Tube fittings are not tight •

Air leaks in air tank or at air tank welds

Air leaks between head and valve plate

Air leaks from safety valve

Knocking noise Defective safety valve•

Pressure switch does not • shut of motor when compressor reaches cut-out pressure

Pressure switch cut-out • too high

enough

Defective air tank• Air tank must be replaced. Do not repair •

Leaking seals• Contact a Bosch factory service center or •

Defective safety valve• Operate safety valve manually by pull-•

Pump oil is low•

Set the On/Off switch to Off, if the unit • does not shut off contact a Bosch factory service center or a Bosch authorized service center

Contact a Bosch factory service center or • a Bosch authorized service center

Tighten fittings where air can be heard • escaping. Check fittings with soapy water solution. Do not overtighten.

the leak Warning:• Risk of bursting. Do not drill

into, weld or otherwise modify air tank or it will weaken. The air tank can rupture or explode.

a Bosch authorized service center

ing on ring. If valve still leaks, it must be replaced.

Operate safety valve manually by pull-• ing on ring. If valve still leaks, it must be replaced.

Add no-detergent oil to pump. •

Carbon build-up in pump•

Pressure reading on the regulated pressure gauge drops when an accessory is used

Regulator is not adjusted •

correctly for accessory being used

Contact a Bosch factory service center or • a Bosch authorized service center

It is normal for some pressure drop to •

occur when an accessory is used, adjust

the regulator.

Note:• Adjust the regulated pressure

under flow conditions while accessory is being used.

trouble sHootInG

Compressor is not supplying enough air to operate accessories

Regulator knob has continuous air leak

Regulator will not shut off air outlet

Moisture in pump crankcase

Prolonged excessive use of • air

Compressor is not large • enough for accessory

Hole in air hose•

Check valve restricted•

Air leaks•

Restricted air intake filter• Regulator is damaged• Replace.•

Regulator is damaged• Replace.•

Unit operating in damp or • humid conditions

Detergent type oil being used • in pump

Decrease amount of air usage.• Check the accessory air requirement. If •

it is higher than the SCFM or pressure supplied by your air compressor, a larger compressor is needed to operate accessory.

Replace air hose.•

Remove, clean or replace•

Tighten fittings.•

Clean or replace air intake filter.•

Move unit to a dry well-ventilated area.•

Drain oil and refill with non detergent oil.•

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