Bosch PFS 105 E (0603206200) [19/193] Correction of malfunctions
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Bosch PFS 105 E (0603206200) [19/193] Correction of malfunctions

Bosch PFS 105 E (0603206200) [19/193] Correction of malfunctions
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

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OBJ BUCH 420 002 book Page 19 Tuesday August 23 2011 12 08 PM English 119 Clean the nozzle 11 and the nozzle needle with diluting agent Changingthe Air Filter see figure L The air filter must be replaced when soiled Fromtimetotime thenozzleseall2mustalsobecleaned Remove the air filter cover 21 Remove the nozzle Hand the nozzleseal 12 If required use a pointed object as the nozzle seal is seat Change the air filter Remount the air filter cover ed firmly to thespraygun Clean thenozzleseal with dilutingagent Reinstall thenozzleseal in the spray gun Pay attention that the groove points away from the spray gun Mount thenozzle onto thespray gun body and turn it to the correct position Mount theair cap2 onto thenozzle and tighten with theunionnut3 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 thelocal 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 I Problem Spray material does not cover properly Cause Corrective Measure Spraying capacity too low Turn thumbwheel 5 in direction Illi Clearance to target area too large Reduce spray distance Not enough spray material on target area Apply more spray paths over target area too few spray paths sprayed 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 Atomisation too course Too much spray material applied Turn thumbwheel 5 in direction 1 Clearance to target area too close Increasespray 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 Spraying capacity too high Turn thumbwheel 5 in direction 1 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 Excessive paint mist Air filter heavily soiled Changing the Air Filter Too much spray material applied Turn thumbwheel 5 in direction 1 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 Build up of spray material on nozzle 11 and nozzle air cap 2 Bosch Power Tools Clean nozzle and air cap Nozzle 11 worn Replace nozzle Nozzle 11 loose Tighten union nut 3 1609 929 Y14 Ц23 8 11

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