Bosch PFS 55 Original Instructions Manual page 26

26 | English
Problem
Spray material runs off
after coating
Atomisation too course
Too much fog of coating
material
Spray jet pulsates
Spray material drips
from the nozzle
No spray material
emerges from the
nozzle
1 609 929 L54 | (18.2.08)
Cause
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 20 soiled
Too little pressure build-up in con-
tainer 11
Spray material too viscous
Air filter heavily soiled
Too much spray material applied
Clearance to spray surface too large Reduce spray distance
Not enough spray material in con-
tainer
Venting hole on suction tube 10
clogged
Air filter heavily soiled
Spray material too viscous
Build-up of spray material on nozzle
20 and air cap 13
Nozzle 20 worn
Nozzle 20 loose
Nozzle 20 clogged
Suction tube 10 clogged
Venting hole on suction tube 10
clogged
Suction tube 10 loose
No pressure build-up in container 11 Screw container firmly against
Spray material too viscous
Corrective Measure
Turning the thumbwheel 15 in
direction –
Increase spray distance
Add original spray material
Remove spray material; reduce
number of spray paths over same
spot
Turning the thumbwheel 15 in
direction –
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
Turning the thumbwheel 15 in
direction –
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
Clean nozzle and air cap
Replace nozzle
Tighten union nut 14
Clean nozzle
Clean suction tube
Clean suction tube and hole
Insert suction tube properly
spray gun
Thin down the spray material by
10% again and carry out a test-
spray run
Bosch Power Tools