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MANUAL
NO.
26-4
Page
5-4
A-l HANDGUN
NOZZLE CLEANING
Nozzle clogging occurs when there is reacted or charred material in
the hose or gun that works its way into the nozzle orifice. Reacted or
charred material may form if the material is heated above the appli-
cation temperature recommended by the manufacturer, or if the
material remains at an elevated temperature for an extended period of
time. If this does occur, it may even be necessary to replace the hose
and/or gun.
A
WARNING: Wear safety glasses, safety gloves, and pro-
tective clothing to prevent injury from hot bulkmelter
parts, material and gun surfaces.
1. Bring the gun to application temperature as described in the
bulkmelter service manual.
A
WARNING: To prevent burns from splashed hot material,
relieve system pressure before opening any hydraulic
connection.
2. Relieve system pressure by turning the bulkmelter pump selector
switch to the OFF position. Trigger the gun to relieve any trapped
residual pressure.
3. Unscrew the nozzle retaining nut from the seat and remove the
nozzle.
4. Clean out the nozzle bore by inserting a pin-type probe through the
nozzle in the same direction as material flow.
5. Re-attach the nozzle to the seat with the nozzle retaining nut.
6. Restore the system to normal operation as described in the bulk-
melter service manual.
7. Trigger the gun to make sure material flows properly.
-
Issued 3/93
0 NORDSON CORPORATION 1993
All Rights Reserved
Publication P/N 108 061
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