8.3.3 Replace needle and seals.
Dürr Systems recommends replacing
the shut-off needle together with the
needle gland. A worn out needle
shank can damage the needle gland.
Personnel:
Operator
+ additional qualification explosion pro-
tection
+ Additional qualification high pressure
Protective equipment:
Protective workwear
Protective gloves
Requirements:
Spray gun is separated from the material
supply system.
Disassembly
Fig. 15: Disassembling Spray Jet Screen
1. Unscrew and remove spray jet screen
(1).
Fig. 16: Disassembling Needle Spring
2. Unscrew end cap (2) using a monkey
wrench.
3. Remove the compression spring (3).
Fig. 17: Disassembling Shut-Off Needle
4. Unscrew the nozzle seal seat (5) using
installation wrench.
Faults
05/2018
EcoGun AL MAN 300 - MSG00016EN
24/44
