Care And Maintenance; Tips For Trouble Shooting - Widoberg WIDO-SPRAY Mode D'emploi

Installation
1. Mount gun on a support. Use 12 mm (15/32") ‡
hole in gun body
2. Connect compressed air to quick connection no. 40.
Please use clean lubricated air.
3. 3-way control valve (minimum flow ‡, 1/4") as close
as possible to the gun. When using a 3-way
solenoid valve, valve is „normally closed" when
deenergized. Actuation of valve can be made
through an automatic timer or manually.
4. Connect material feed (compound hose) to hose
connection no. 15.
Start-up
1. Open stop cock no. 13.
2. Deaerate the gun. There are 2 possibilities:
a) Fundamental aeration of the whole system:
Please unlock retaining nut no. 30, 2–3 times until
no air will come out or till compound will emerge.
Then lock again.
b) Quick aeration of the gun:
Put the blade of a screwdriver to the groove of
the nozzle nut no. 1 and press down the nozzle
until no air will come out. After the screwdriver
has been removed, the system is closed
automatically. Please check that the position of
the nozzle has not become changed.
3. Actuate control valve automatically or manually.
4. Adjust quantity of spray volume by means of knurled
knob no. 26.

Care and maintenance

A To avoid damaging seals, never immerse spray gun
in hot water or aggressive cleaning fluids.
Keep movable parts clean and lubricate them when
maintaining.
B Exchange of cartridge
The most important spare parts are put together as
a cartridge. If you will have on stock a compl.
cartridge the exchange of worn spare parts is very
quick. You only need a spanner (size 30) to replace
the compl. cartridge. Afterwards you have time to
check the different parts.
Please assure that the cup seal no. 9 must be
installed with the sealing lip towards the nozzle.
C Exchange of valve piston no. 6
Remove retaining nut no. 3. Extract valve piston no.
6 with a pincersand press in the new valve piston by
hand.
D Replacement of plunger
Please unlock retaining nut no. 25. Then remove
cylinder cover no. 23 and take out the compl.
cartridge, the plunger and the piston assembly.
If the plunger is defective, the plunger has to be
pressed out of the piston assembly no. 38. The best
way is to heat up the piston with 150 to 200°C, then
it is easy to remove the old one and to fit the new
plunger. Before fitting again to the gun the flat seal
no. 20 hasto be replaced. Also the inner wall of the
cylinder and the plunger has to be lubricated with
graphitic oil.
12

Tips for trouble shooting

No compound emerges from nozzle:
A Insufficient air pressure: increase to 75–90 p.s.i.
Guide bush of piston guide no. 7 is worn out.
Exchange cartridge and replace piston guide.
B Gun or whole system not properly deaerated:
See „Start-up, pos. 2".
C Nozzle blocked:
Remove nozzle and clean.
D Check valve no. 17 binds or leaks:
Clean or replace
E Material hardened in feed line:
Clean line and stop cock no. 13.
F Plunger no. 36 binds, does not retract:
Exchange compression spring no. 37 and/or piston
assembly no. 38 or flat seal no. 20.
G Gun dribbles:
Valve piston no. 6, valve seat no. 4 or compl. piston
guide no. 7 could get worn out. Replace these parts.
H Filter cartridge of the strainer behind pomp or
pressure vessel is foul:
Please take out and clean.
When using buffing compound:
To obtain trouble free operation and minimum rate of
wear, use airless compositions suitable for high
pressure applications.
We reserve the right to make changes for the
purposes of improvements and technical progress.