AOM K90 Manuel d'utilisation et d'entretien - Page 14

Parcourez en ligne ou téléchargez le pdf Manuel d'utilisation et d'entretien pour {nom_de_la_catégorie} AOM K90. AOM K90 16 pages. Airless gun

4.3

REPLACEMENT OF THE NEEDLE PACKING

Completely discharge the pressure in the system, disassemble the finger protection (tip guard),

the tip, the diffuser, the rear cap, the spring and the M3 nut. Unscrew the needle from the front

side of the gun by means of a 8mm (0.31 in.) wrench. Remove the piston, unscrew the packing

gland nut, pull out the pressure wedge and the stuffing box and replace it (see assembling

drawing).

WARNING

When screwing the needle in the piston, make sure that the needle thread bar comes

out 10mm (0.39 in.) from the piston shank, otherwise functioning problems can occur.

4.3

This chapter describes how to solve the most common problems which could affect the unit.

The problem is indicated by the following symbol: (6)

The possible cause is indicated by the following symbol: (ß)

The possible solution is indicated by the following symbol: (l)

THE GUN SPRAYS INTERMITTENTLY

See manual of the pump used.

LOW PRESSURE OF PRODUCT COMING OUT

Dirty gun filter

Clean gun filter

UNEVEN JET

Worn or dirty tip.

Clean the gun components carefully.

Replace damaged parts.

PAINT LEAKS OUT OF THE STUFFING BOX

Worn packing gland.

Replace the packing gland.

P AINT COMES OUT OF THE NOZZLE EVEN WHEN THE GUN IS NOT TRIGGERED

Dry paint dirties the needle ball and the diffuser ball seat.

Worn ball and ball seat.

Clean the gun parts very carefully.

Replace both the ball and its seat, using REPAIR KIT part Nr. 505000