31
6.3.3
Replacing the swirl nozzle, pressure spring & ball (HB 710 Spray)
Tools needed
• 1 hook spanner
• 1 open-end spanner size 11
• 1 open-end spanner size 32 or pipe wrench
There must be no melt at all left in the tank when the nozzle end is replaced. Therefore
discharge the melt completely, e.g. into a collecting vessel.
1. Disconnect the compressed-air supply.
2. Release the cap ring (B1) by turning it
when warm
without using force.
3. Remove the protection cap (B6) and air cap (B2).
4. Loosen the swirl nozzle (B3) with the open-end spanner size 11. Fix it by locknut with
the open-end spanner SW32 or pipe wrench.
5. Remove the pressure spring (B4) behind the swirl nozzle and the ball (B5).
6. Fit the new components in reverse order.
6.4
Adjusting the cover pressure
Tools needed
• 1 hexagon socket spanner size 1.5
• 1 hexagon socket spanner size 2,5
• 1 hexagon socket spanner size 3
C1
C2
C3
C4
Fig. 6.4/1: Adjusting the cover pressure
1. Rotate the lever (C3) clockwise and swivel the cover until fully open.
2. Loosen the lever fi xing screw (C4) with the hexagon socket spanner SW3.
Withdraw the screw.
3. Loosen the clamping screw (C1) with the hexagon socket spanner size 1.5 (approx. 1,5
turns).
4. Insert the hexagon socket spanner size 2.5 into the adjusting screw through the lever
screw-hole. Turn the adjusting screw clockwise initially by approx. 90°.
5. Close and lock the cover.
If the cover will not close, keep turning the adjusting screw back (clockwise) by approx.
15° until the cover closes easily.
6. Actuate the trigger.
• If the cover now closes correctly, proceed at step 7.
• If the cover still does not close correctly, repeat the adjustment from section 4.
7. Open the cover again.
8. Tighten the clamping screw (C1).
9. Fit the lever fi xing screw (C4).
Servicing/maintenance
GB
