12
D-G 16 S2 - 18.04.13 / Vers.: 1
4.5 Checking of the injector if blasting performance is reduced
(see fig. 3 and 4, page 6 & 8)
If there is reduced blasting performance, the injector (20), the jet nozzle (22) and the aspirator
basket (31) must be checked as follows:
1. Disconnect device at the main power switch (60) ! Pull out power plug!
2. Hang up injector (20) after releasing the screw (63) and unscrew injector (70) from its mounting.
3. Pull clip connectors (21) to the side.
4. Pull jet nozzle (22) out by turning and while holding the injector housing (20).
5. Check whether any foreign bodies are present in the nozzle holes, and remove these wherever
appropriate.
6. A severely blasted out nozzle (22) (diameter greater than 4.5 mm) must be replaced.
7. The injector pin (23) must be flush with the surrounding injector ring (24). If the injector pin is
shortened by more than 1.5 mm due to wear, the injector must be replaced.
8. Check the injector pin for any possible external damage.
-
Close off air hoses (27) and (28) and remove injector along with abrasive aspirating hose
(26).
9. Check the aspirator basket (31) in the lower part of the sand reservoir for contamination, and if
necessary clean it. For this purpose see “Draining of the abrasive” section “4.4”.
22
26
24
21
23
70
72
26
29
71
28
Diameter greater than
4.5 mm = exhange jet nozzle
Fig. 5: Dismantling of the injector (70) for manual blasting
21
Clip connector 28
Air hose for injector (70)
22
Jet nozzle 29
Sandblasting area shield
23
Injector pin 70
Injector for manual blasting
24
Injector ring 71
Coupling nut
26
Abrasive aspiration hose 72
Hose fitting
To Next Page