Preventive Maintenance - DeVilbiss CMAX–B85MN Operation Manual

EN
INSTALLATION (CONTINUED)
START UP (continued)
6. If the finish is too wet, turn the ratchet knob (25)
in clockwise to reduce the fluid flow, or reduce
the fluid pressure. If the atomization is too
coarse, increase inlet air pressure, or reduce fluid
flow.
7. The pattern size can be reduced by turning
adjusting valve FAN 'F' (13) clockwise.
8. The spray pattern will give the best results when
perpendicular to the target.
MAINTENANCE

PREVENTIVE MAINTENANCE

Turn off air and coating supply and
relieve pressure in the supply lines, or
disconnect from airline and fluid line.
1. Unlock the spray gun from the base plate, remove
it, and if available re-attach an alternative gun.
Now the spray gun maintenance can be done
outside the spray booth while production is still
continuing.
2. Remove air cap (1) and clean. If any of the holes
in the cap are blocked with coating material use
a toothpick to clean. Never use metal wire which
could damage the cap and produce distorted
spray patterns
3. Ensure the nozzle of the fluid tip (2) is clean and
free from damage. Any build up of dried paint
can distort the spray pattern.
REPLACEMENT OF PARTS
Turn off air and coating supply and
relieve pressure in the supply lines,
before any maintenance operation.
TIP (2) & NEEDLE (18)
Remove the air cap (1) by unscrewing its retaining
ring counter- clockwise, remove the index ring if it
remains on the gun head (if fitted and used).
9. The recommended spray distance is 6'' to 8''
(150-220 mm).
10. Spray edges first. Overlap each stroke a
minimum of 50%. Move gun at a constant
speed.
11. Always turn off air and fluid supply and relieve
pressure and clean down when gun is not in
use.
Remove the tip (2) and its air separator ring (3) by
unscrewing counter-
hexagonal spanner.
Unscrew the adjusting needle knob (25) fully in
counter-clockwise rotation, push the needle from
the front of the spay gun, carefully so to avoid
damage the needle end, then pull out the needle
(18) from the back.
If necessary, replace the needle and the tip, first
refitting the tip with its air separator ring
(recommended torque between 9,5 to 12 Nm).
Lubricate all the surface of the needle which will be
in contact with the packing and o ring. Slide the
needle into the spray gun from the back. Fit the
needle springs with its plastic pad (22,23,24) and
replace the needle adjusting knob (25).
PACKING SEAL (9)
Unscrew the air cap (1), tip (2) and its air separator
ring (3).
Unscrew the 4 screws (6) to disassemble the gun
head (8). Push back the packing seal (9) using a
5,5mm diameter rod from the front of the gun head.
Clean the packing location hole carefully with
adequate solvent.
Fit a new packing seal (9) U face towards the air
passage.
8 / 14
clockwise with 10mm
SB-2-590-D (11/2016)