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HC 920 • HC 940 • HC 960 57
GB
Appendix
13. Appendix
13.1 Selection of tip
To achieve faultless and rational working, the selection of the tip is of the greatest importance.
In many cases the correct tip can only be determined by means of a spraying test.
Some rules for this:
The spray jet must be even.
If streaks appear in the spray jet the spraying pressure is either too low or the viscosity of the coating material to high.
Remedy: Increase pressure or dilute coating material. Each pump conveys a certain quantity in proportion to the size of the tip:
The following principle is valid: large tip = low pressure
small tip = high pressure
There is a large range of tips with various spraying angles.
13.2 Servicing and cleaning of Airless hard-metal tips
Standard tips
If a different tip type has been fitted, then clean it according to manufacturer’s instructions.
The tip has a bore processed with the greatest precision. Careful handling is necessary to achieve long durability. Do not forget the fact
that the hard-metal insert is brittle! Never throw the tip or handle with sharp metal objects.
The following points must be observed to keep the tip clean and ready for use:
1. Turn the relief valve handle fully counterclockwise (& Circulation).
2. Switch off the gasoline engine.
3. Dismount the tip from the spray gun.
4. Place tip in an appropriate cleaning agent until all coating material residue is dissolved.
5. If there is pressure air, blow out tip.
6. Remove any residue by means of a sharp wooden rod (toothpick).
7. Check the tip with the help of a magnifying glass and, if necessary, repeat points 4 to 6.
13.3 Spray gun accessories
Flat jet adjusting tip
up to 250 bar (25 MPa
Tip marking
Bore
mm
Spray width at about 30 cm
removal of spray object
Pressure 100 bar (10 MPa)
Use
Flat jet
adjusting tip
Order No.
15
20
28
41
49
0.13 - 0.46
0.18 - 0.48
0.28 - 0.66
0.43 - 0.88
0.53 - 1.37
5 - 35 cm
5 - 50 cm
8 - 55 cm
10 - 60 cm
10 - 40 cm
Paints
Paints, fillers
Paints, dispersions
Rust protection
paints - dispersions
Large-area coats
0999 057
0999 053
0999 054
0999 055
0999 056
Contact protection
for the flat jet adjustment tip
Order No. 0097 294
Tip extension with slewable
knee joint (without tip)
Tip extension
Length 100 cm Order no. 0096 015
Length 200 cm Order no. 0096 016
Length 300 cm Order no. 0096 017
15 cm, F-thread, Order no. 0556 051 15 cm, G-thread, Order no. 0556 074
30 cm, F-thread, Order no. 0556 052 30 cm, G-thread, Order no. 0556 075
45 cm, F-thread, Order no. 0556 053 45 cm, G-thread, Order no. 0556 076
60 cm, F-thread, Order no. 0556 054 60 cm, G-thread, Order no. 0556 077