Installation; Tips For Trouble Shooting; Care And Maintenance - Widoberg HDP-II Bedienungsanleitung

Installation:

1. Mount gun on a support:
Use 12 mm (15/32") Ø hole in gun body
2. Connect compressed air to quick connection
No. 71. (Use clean lubricated air)
3. Install 3-way control valve (Minimum flow Ø,
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 through an automatic timer or manually.
4. Connect material feed (compound hose) to
connection No. 56. A dirt trap (strainer) in feed
line is recommended. Strainer mesh size: 30
Start-up
1. Open material shut-off valve No. 55.
2. Open bleed valve nut No. 93 slightly until
material emerges.
3. Actuate control valve to vent gun and then close
bleed valve nut No. 93. Adjust compression
spring No. 82 by means of compression screw
No. 79 so needle valve No. 84 opens upon
actuation of control valve.
4. Adjust quantity of spray by means of knurled
knob No. 69.

Care and maintenance

To avoid damaging seals, never immerse spray gun
in hot water or aggressive cleaning fluids. Clean
exterior with a damp brush or rag. Clean dismantled
nozzle with compressed air. Keep all moving parts
clean and oil lightly when servicing.
Removal of needle valve No. 84
Unscrew compression screw No. 79. Unscrew
bushing No. 80 from gun body No. 88 and pull out
needle valve. When replacing needle valve make
sure to check valve seat No. 90 (both sides can be
used) or if both sides are worn, also replace valve
seat No. 90.
Removal of plunger No. 61
Unscrew retaining nut No. 68 (at air connection end)
and remove complete cylinder cover No. 67. Pull
out complete piston assembly No. 75 including
plunger No. 61.
Unscrew countersunk screw No. 65 and push out
plunger No. 61 from piston assembly No. 75. When
reassembling, tighten screw firmly and secure
threads with a locking fluid.
12
Changing of nozzle
Unscrew retaining nut No. 92 and remove nozzle
and valve seat No. 90.

Tips for trouble shooting

No compound emerges from nozzle
Insufficient air pressure:
increase to 75-90 p.s.i.
Gun not properly vented:
Open bleed valve assembly No. 93 to vent. Pull
back needle valve by hand to let air escape; this
also serves as a check if compound pressure is
available.
Nozzle blocked:
Remove nozzle and clean.
Check valve No. 52 binds or leaks:
Clean or replace.
Strainer in dirt trap blocked:
Remove and clean.
Material hardened in feed line:
Clean line and stop cock No. 55.
Plunger No. 61 binds, does not retract:
Replace compression spring No. 63 or piston
assembly No. 75 and/or cup seal No. 57.
Gun dribbles
Compression screw No. 79 loose: tighten.
Needle valve No. 84 or valve seat No. 90 worn:
replace parts including compression spring No. 82.
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
purpose of improvements
progress.
and technical