Bosch GSN 90-21 RK Professional Specifications download pdf (Page 24)

1 609 929 U15 | (8.12.09) Bosch Power Tools

24 | English

Declaration of Conformity

We declare under our sole responsibility that the product

described under “Technical data” is in conformity with

the following standards or standardization documents:

EN 792 according to the provisions of the directives

98/37/EC (until 28 Dec 2009), 2006/42/EC (from

29 Dec 2009).

Technical file at:

Robert Bosch GmbH, PT/ESC,

D-70745 Leinfelden-Echterdingen

Robert Bosch GmbH, Power Tools Division

D-70745 Leinfelden-Echterdingen

Leinfelden, 08.12.2009

Assembly

Connecting the Air Supply (see figure A)

Make sure that the pressure of the compressed-air sys-

tem is below the maximum permitted rated pressure of

the pneumatic tool. Firstly, set the air pressure to the

lower value of the recommended rated pressure (see

“Technical Data”).

When in doubt, check the pressure at the air inlet with a

pressure gauge with the pneumatic tool switched on.

For maximum performance, the values for the supply-air

hose 13 (connection thread, maximum operating pres-

sure, inner hose diameter, maximum hose length; see

“Technical Data”) must be observed.

The compressed air supplied should be free of foreign

material and moisture to protect the tool from damage,

contamination, and the formation of rust.

All fittings, connecting lines and hoses must be dimen-

sioned for the pressure and the required air volume.

Avoid restrictions in the air supply, e.g., from pinching,

kinking, or stretching!

Connecting the Air Supply to the Pneumatic Tool

– Empty the magazine 8.

(See “Emptying the Magazine”, page 26)

For the following worksteps, a fastener can be dis-

charged when interior parts of the pneumatic tool are

not in the starting position due to repairs, maintenance

or transport.

– Connect the air connector 6 with a supply-air hose 13

equipped with an air-connection coupling 12.

– Check the proper function by placing the outlet 11 or

the rubber workpiece protector 1 of the pneumatic

tool onto a piece of scrap wood or wood material, and

discharging once or twice.

Loading the Magazine (see figures B1–B2)

Disconnect the air supply before making any

adjustments, changing accessories, or plac-

ing the pneumatic tool aside. This safety

measure prevents accidental starting of the

pneumatic tool.

f Use only original Bosch accessories (see “Technical

Data”). The precision parts of the pneumatic tool such

as the magazine, the outlet and the shot duct are

matched to Bosch staples, nails and brads. Other man-

ufacturers use other steel qualities and sizes.

Using fasteners not permitted, can damage the pneu-

matic tool and cause injuries.

While loading the magazine, hold the pneumatic tool in

such a manner that the outlet 11 is not pointed at your

own body or at other persons.

– Pull back the magazine slider 7 until it engages at the

rear.

Note: The magazine slider must slide back with only low

force (finger-pressure). A tight-running magazine slider

causes the nails to be driven in at an incorrect angle.

– Clean and lubricate the magazine slider 7 as required

and make sure that the magazine 8 is not dirty/soiled.

– Insert a fitting nail strip 14.

Do not use nail strips with less than 5 nails. Do not in-

sert more than 2 nail strips. Make sure that the heads

of the nails do not overlap.

GSN 90-34 DK: With this pneumatic tool, a lock function

of the magazine slider prevents the last nails from being

discharged. Approx. 7 nails remain in the magazine.

– Completely pull back the magazine slider 7 once more

to free the lock.

– Carefully guide the magazine slider to the front until it

touches the nail strip.

Make sure that the magazine slider is slid beyond the

head of the last nail.

Note: Do not let the magazine slider snap back without

guiding it. Otherwise, the magazine slider could become

damaged, and there is danger of your fingers being

caught or pinched.

Dr. Egbert Schneider

Senior Vice President

Engineering

Dr. Eckerhard Strötgen

Head of Product

Certification

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Bosch GSN 90-21 RK Professional Specifications Page 24

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