Correction Of Malfunctions - Bosch PFS 65 Notice Originale

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OBJ_BUCH-620-006.book Page 18 Wednesday, December 7, 2011 11:20 AM
18 | English
Never clean the nozzle and air holes of the spray gun with
pointed metal objects.
Do not pour diluted spray material back into the original spray
material drum/tin for storage.
Clean the spray gun thoroughly after having sprayed material
hazardous to one's health.
– Switch the base unit off and pull the trigger switch 9 of the
spray gun so that the spray material can flow back into the
container.
– Unscrew the container 8 and empty the remaining spray
material.
– Fill diluting agent (paint thinner or water) into the contain-
er and screw it to the spray gun.
– Shake the spray gun several times.
– Switch the base unit on and spray the diluting agent into an
empty material tin.
– Repeat the last three steps until clear diluting agent emerg-
es from the spray gun.
– Switch the base unit off again.
– Completely empty the container 8.
– Check if the suction tube 10 and the container seal are
free of spray material and undamaged.
– Clean the outside of the container and the spray gun with a
cloth moistened in paint thinner.
– Unscrew the union nut 3 and the air cap 2.
– Clean the nozzle 11 and the nozzle needle with diluting
agent.

Correction of Malfunctions

Problem
Spray material does not cover
properly
Spray material runs off after
coating
Atomisation too course
Excessive paint mist
Spray jet pulsates
1 609 929 Y13 | (7.12.11)
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 22.
– Replace 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!
Cause
Spraying capacity too low
Clearance to target area too large
Not enough spray material on target area,
too few spray paths sprayed over target area
Spray material too viscous
Too much spray material applied
Clearance to target area too close
Viscosity of spray material too low
Spray material applied too often over same
spot
Spraying capacity too high
Nozzle 11 soiled
Too little pressure build-up in container 8
Spray material too viscous
Air filter heavily soiled
Too much spray material applied
Clearance to spray surface too large
Not enough spray material in container
Venting hole on suction tube 10 clogged
Air filter heavily soiled
Spray material too viscous
Corrective Measure
Turn thumbwheel 5 in direction IIII
Reduce spray distance
Apply more spray paths over target area
Thin down the spray material by 10% again
and carry out a test-spray run
Turn thumbwheel 5 in direction I
Increase spray distance
Add original spray material
Remove spray material; reduce number of
spray paths over same spot
Turn thumbwheel 5 in direction I
Clean nozzle
Screw container firmly against spray gun
Thin down the spray material by 10% again
and carry out a test-spray run
Changing the Air Filter
Turn thumbwheel 5 in direction I
Reduce spray distance
Refill spray material
Clean suction tube and hole
Changing the Air Filter
Thin down the spray material by 10% again
and carry out a test-spray run
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