Problem
Problem
Problem
Cause
Cause
Cause
Solution
Solution
Solution
The air supply is inadequate.
Make sure the air compressor is capable of supplying
the minimum air flow requirement for your system (see
Technical Specifications, page 66
). Make sure the air inlet
pressure gauge reads 100-175 psi (6.8–12 bar, 0.68–1.2
MPa). If the gauge does not read 100–175 psi, check the air
compressor for proper setup. Make sure the air inlet filters
are clean and replace if necessary.
The blast hose was not
properly cleaned out after
previous use.
See
The abrasive metering valve
setting is too high for the blast
pressure and/or abrasive
type.
See
Setting the Abrasive Metering Valve, page 16
.
The pot does not have a
sufficient amount of abrasive.
Refill the pot with abrasive (see
Refilling the Pot with Abrasive, page 20
There is an obstruction in the
nozzle
Remove the nozzle and inspect for blockage, buildup, or
damage. Replace if necessary.
The blast spray
pattern is sputtering
or irregular.
There is an obstruction inside
the pot or inside the abrasive
hose between the pot and the
enclosure.
Perform
, followed by
Pressure Relief Procedure, page 10
. With the abrasive
hose disconnected, inspect the interior of the pinch hose
for obstructions or debris and replace if necessary (see
Replacing the Pinch Hose, page 32
). Remove the tri-clamp
from the bottom of pot. Inspect the bottom of the pot and
abrasive hose for obstructions or debris.
There is not enough water in
abrasive mixture.
See
Using the Water Dose Meter, page 23
(an upgrade kit is
available for non-Elite models).
The blast pressure too high.
Decrease the blast pressure and re-evaluate the dust levels.
Too much dust occurs
during blasting.
The abrasive is too fine for the
application.
Try a coarser or harder abrasive if possible.
The water dose valve (S)
open too far.
Close the water dose valve (S).
The abrasive material is too
coarse.
If possible, use at least 20 mesh abrasive material. Otherwise,
decrease the CPM set point until the pattern improves.
Too much water is
coming from the nozzle
in BLAST mode.
The abrasive metering valve
setting too high for blast
pressure and/or abrasive
type.
See
Setting the Abrasive Metering Valve, page 16
.
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