8. TROUBLESHOOTING REM - GRAINVAC VR12
92 9000-00-0042 R3
Suction
Problems
(contin-
ued)
Plugged drum Remove the inspection door from the body of the
machine and inspect the drum. Use a steel brush to
remove foreign materials that have adhered to the
drum screen. Use compressed air or a pressure
washer to unplug the screen if small particles have
wedged themselves into perforated areas. If the mate-
rial is wedged in from the inside of the screen, check
for holes in the drum. Repair or replace the drum.
Ensure that drum inlet lip is within tolerance from
machined cast inlet (refer to Section 6.6. Drum
Removal/Maintenance on page 84).
Plugged hoses Locate the obstruction and remove.
Damaged drum/rotor inlet due
to worn cast aluminum inlet
Replace the cast aluminum inlet (refer to Section 6.6.
on page 84).
Damaged lining in steel flex
tube
Repair or replace the tube.
Air leak at inspection door or
clean-out door
Ensure body inspection door and auger clean-out door
are fully closed (see Figures 7.1 & 7.3).
Suction or
Perfor-
mance
Problem
GrainVac surges or pulses The GrainVac could be starved for air. Increase the air
supply to allow enough air for a smooth flow of grain.
A hose is plugged. Remove obstruction.
Check the end dump double doors. The doors must
close completely and securely. Adjust the spring ten-
sion. Refer to Section 5.4.7. on page 62 for correct
spring tension. Replace the tension spring if it cannot
be adjusted to proper tension.
Static electricity build up caus-
ing poor performance
In some circumstances when operating the GrainVac,
static electricity may develop. When this happens,
product that is dirty or chaffy may build up on the
rotary drum screen. Ground the GrainVac by allowing
the jack to touch the ground. This happens in high
humidity weather conditions most times. If the drum
builds up with debris, replace a worn brush(s) on
brush kit.
Body is plugging Refer to the Section 4.8. Grain Vacuum Operation Pro-
cedure on page 39 for air throttle adjustment instruc-
tions. Lubricate air throttle if sticking. Refer to Section
5.4.7. on page 62 to check end dump spring tension.
PROBLEM POSSIBLE CAUSE SOLUTION
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