Nordson HORIZON 200, Руководство по эксплуатации продукта

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Troubleshooting
6-4
Part 106913 − 04
E 2018 Nordson Corporation
Troubleshooting Procedures
(contd)
Problem Possible Cause Corrective Action
4. Powder not fluidizing,
or clouds of powder
erupting from surface
Fluidizing pressure too low or too
high
Check the powder in the hoppers.
Increase the fluidizing air pressure
until the powder is gently boiling.
Decrease the pressure if clouds of
powder are erupting from the surface.
Moist or oil-contaminated powder Open the drain valve at the air-supply
drop leg and check the air supply for
water or oil. Check the filters,
separators, and air dryer.
Replace the powder in the hoppers.
Refer to the next cause.
Air leaking from fluidizing pan
gasket instead of diffusing through
fluidizing plate, or contaminated air
plugging pores in fluidizing plates
Check for air leaks around the
fluidizing pan gaskets. If leaks are
found, remove the pan and replace
the gasket.
If fluidizing air pressure increases or
decreases abruptly, remove the
powder from the hoppers and inspect
the fluidizing plates for stains,
discoloration, or polished surfaces.
Replace the fluidizing plates if they
are contaminated or plugged.
Transfer pumps or hoses are
plugged, or fluidizing plate in color
module or feed hopper is cracked
Clean the transfer pumps and
replace worn parts. Blow the powder
out of the transfer hoses with
compressed air. Make sure the
hoses are clear.
Check the fluidizing plate and replace
it if it is cracked.
Incorrect ratio of reclaimed-to-new
powder
Change the transfer-pump air
pressure to increase or decrease the
transfer rate. Add new powder to
hopper. The powder supply should
be no more than 3 parts reclaim-to-1
part new powder.
Uneven distribution of powder in
hopper
Increase the fluidizing pressure.
Check the powder and the fluidizing
plate for contamination as previously
described.
Continued...