Blower; Blower Speed - CONCORD NT30 Operator's Manual

3. Operation

3.9 Blower

The blower system for the machine generates air pressure/flow to carry the seed or other input products
through the system to the implement. A hydraulic motor drives the blower system. Two 3/4 inch hydraulic
lines supply oil to the blower.
The only part on the blower that can be serviced is the shaft seal. The shaft seal can be replaced if the
motor leaks at the shaft. Do not disassemble the motor to replace the shaft seal. The shaft seal is fastened
by a snap ring and can be removed with a seal pick.
IMPORTANT:
Be sure that the case drain line on the blower motor is not connected to pressure. Damage to the shaft
seal or motor will result.
IMPORTANT:
Do not under any circumstances disassemble the motor. The motor is very difficult to correctly assemble
and motor destruction will result. If a motor failure occurs, get a replacement motor from the dealer.

3.9.1 Blower speed

Operate the blower at as slow a speed as possible to prevent damage to seed. If operated too slowly, line
blockage will occur. Typical blower speeds are between 3000 and 6000 rpm. The drill width, product, rate,
humidity, and other factors can change blower speed.
If a run blockage monitor is not used, make sure all runs are operating after changing blower speeds. To
check the runs:
1. Turn the meter(s) with the blower running
2. Make sure there is product at each ground opener
The number of outlets on the implement will directly change the blower rpm. The more outlets in use, the
higher the pressure required to keep blower rpm. See your dealer for hydraulic adjustments to your tractor,
if necessary.
One method to determine blower RPM is to remove a final run from the seed boot or shoe. Hold the hose
about 5 ft. (1.5 meter) off of the ground pointing straight up. Turn product out of the meter with the blower
running. The product coming from the hose must blow out of the hose approximately 8 inches (203 mm )
into the air. Adjust blower RPM as required.
66
GUID-44D2799E-A1E9-42D6-899F-0899EBEAD26C [V1]
Narrow-Transport Grain
Drill (322782B)