Troubleshooting - Contracor 12900 Bedienungsanleitung

8. Troubleshooting

Problem
No Abrasive Flow
CONTRACOR POWER GUN Art. 12 900
®
Reason
Foreign material in the mixing
chamber assembly.
Abrasive blockage in the
material hose. If the material
hose packs with abrasive, it is
a sign that the abrasive mixture
is too rich.
Worn nozzle.
Air jet worn.
Air jet and/or nozzle not seated
correctly.
Abrasive bridging at the lance's
abrasive inlet holes. Frequent
bridges or blockage are most
likely caused by damp abrasive.
Hole worn in material hose.
Solution
Remove nozzle and check for
blockage in the suction head
and nozzle.
Make sure the air-intake holes
in the lance are open.
Replace nozzle when the
orifice is worn to 9/16", or
sooner if production decreases
noticeably.
Inspect end of air jet and
replace when wear reaches the
orifice.
The jet and nozzle must be
fully seated into the mixing
chamber, and the setscrews
must be tight.
Empty the material hose and
hopper of abrasive, and store
the abrasive in an airtight
container when not in use.
Inspect hose for holes and
inspect the clamps for leaks.
Repair as needed.
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