English |
19
Bosch Power Tools
1 609 929 Y14 | (23.8.11)
– Clean the nozzle
11
and the nozzle needle with diluting
agent.
From time to time, the nozzle seal
12
must also be cleaned.
– Remove the nozzle
11
and the nozzle seal
12
.
If required, use a pointed object, as the nozzle seal is seat-
ed firmly to the spray gun.
– Clean the nozzle seal with diluting agent.
– Reinstall the nozzle seal in the spray gun. Pay attention that
the groove points away from the spray gun.
– Mount the nozzle onto the spray gun body and turn it to the
correct position.
– Mount the air cap
2
onto the nozzle and tighten with the un-
ion nut
3
.
Changing the Air Filter (see figure L)
The air filter must be replaced when soiled.
– Remove the air filter cover
21
.
– Change the air filter.
– Remount the air filter cover.
Material Disposal
Diluting agent and remainders of spray material must be dis-
posed of in an environmentally-friendly manner. Observe the
manufacturer’s disposal information and the local regulations
for disposal of hazardous waste.
Chemicals harmful to the environment may not be disposed
of into soil, groundwater or bodies of water. Never pour
chemicals harmful to the environment into the sewerage sys-
tem!
Correction of Malfunctions
Problem
Cause
Corrective Measure
Spray material does not cover
properly
Spraying capacity too low
Turn thumbwheel
5
in direction
IIII
Clearance to target area too large
Reduce spray distance
Not enough spray material on target area,
too few spray paths sprayed over target area
Apply more spray paths over target area
Spray material too viscous
Thin down the spray material by 10% again
and carry out a test-spray run
Spray material runs off after
coating
Too much spray material applied
Turn thumbwheel
5
in direction
I
Clearance to target area too close
Increase spray distance
Viscosity of spray material too low
Add original spray material
Spray material applied too often over same
spot
Remove spray material; reduce number of
spray paths over same spot
Atomisation too course
Spraying capacity too high
Turn thumbwheel
5
in direction
I
Air flow too low
Turn control knob
16
toward the right
Nozzle
11
soiled
Clean nozzle
Too little pressure build-up in container
8
Screw container firmly against spray gun
Spray material too viscous
Thin down the spray material by 10% again
and carry out a test-spray run
Air filter heavily soiled
Changing the Air Filter
Excessive paint mist
Too much spray material applied
Turn thumbwheel
5
in direction
I
Clearance to spray surface too large
Reduce spray distance
Viscosity of spray material too low
Reduce air flow; turn control knob
16
toward
the left
Spray jet pulsates
Not enough spray material in container
Refill spray material
Venting hole on suction tube
10
clogged
Clean suction tube and hole
Air filter heavily soiled
Changing the Air Filter
Spray material too viscous
Thin down the spray material by 10% again
and carry out a test-spray run
Spray material drips from the
nozzle
Build-up of spray material on nozzle
11
and
air cap
2
Clean nozzle and air cap
Nozzle
11
worn
Replace nozzle
Nozzle
11
loose
Tighten union nut
3
OBJ_BUCH-420-002.book Page 19 Tuesday, August 23, 2011 12:08 PM
