Buhnen HB 710 - Replacing the Swirl Nozzle, Pressure Spring & Ball (HB 710 Spray); Adjusting the Cover Pressure

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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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xingscrew(C4).
Servicing/maintenance