Great Plains NP30A 30-foot Operator Manual - Manual (Page 101)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 97
2014-05-20 Table of Contents Index 407-502M
Sealer Adjustments
The sealers close the trench behind the knives or tines,
manage residue. Adjustable to control or avoid berm.
Knife/Tine Spider Sealer Adjustments
Refer to Figure 81, 82 and Figure 83 on page 98
To provide consistent action, the sealer wheels and discs
are free to move downward from their normal operating
position. This system maintains consistent closing/
cleaning/berming action.
Ammonia Exposure Hazard:
Fine tune sealer adjustment with dry runs prior to initial
application. Making adjustments after beginning application,
even with knives or tines left in the ground, could cause your
exposure to exceed PEL, leading to health problems or injury.
If you need to make adjustments after application begins,
discharge the system (page 110), and then lower the knives or
tines into the ground. Minimize your vapor exposure.
Spring Energy and Sharp Object Hazards:
Do not attempt to lift springs off weldment pins unless fully
compressed. Springs
are always in tension in operating
configurations. Follow instructions carefully to avoid injury
from pinching or flying parts. Sealer discs may be sharp. Use
caution when working around them.
Disc Sealer Adjustments
There are four to six sealer adjustments available,
depending on sealer type:
1. Down stop (shown at maximum)
2. Down pressure (shown at minimum)
3. Wheel/disc mount tilt (shown at wheels aft)
4. Wheel/disc mount height (shown at factory default)
5. Wheel arm spacing (shown at factory default)
6. Wheel arm angle (shown at maximum)
7. Disc direction (shown dished out)
Sealer Down Stop
The maximum range of motion is available with the pin
in the factory setting (lower hole). Moving the pin to the
upper hole increases sealer ground clearance in
applicator lift.
To change the pin position, lower the applicator until the
sealer wheels or disc are in ground contact, and the
arms are lifted above both down-stop holes. Remove the
cotter pin. Relocate the stop pin and re-insert cotter.
Note: Do not operate with the pin entirely removed.
The pin is temporarily removed for down pressure
adjustments.
Figure 81
Spider Sealer Adjustments
31590
1
2
5
3
6
4
1
7
8
7
Figure 82
Disc Sealer Adjustments
31591
2
5
3
6
4
1
7
1
1