Clutch operation, Clutch overrides – Great Plains YP3025A Operator Manual User Manual
Page 51

Great Plains Manufacturing, Inc.
Operating Instructions
47
02/16/2012
401-705M
Clutch Operation
The YP3025A Planter has drive system clutches, which
enable or disable row unit meter drive:
• (standard) an electric clutch for each planter section
(left wing, center, tight wing; 3 clutches total), or
• (Swath Command option) a pneumatic clutch for each
row, or, on twin row, for each row pair.
Switches on the CFM provide control of clutches for the
entire planter, or for each planter section. This control is
in addition to that provided by the lift switch (all rows on/
off), and the Swath Command option (arbitrary sets of
clutches on/off).
The switches Left
/ Center
/ Right
correspond to
the left wing row units, center section row units and right
wing row units respectively.
The Master
switch controls all row units, regardless of
drive type. For all switches, “OFF” (down) removes power
from the clutch, disengaging that set of row units. When
any switch (plus Master) is ON, the LED for that switch
illuminates steadily.
The information in the table at right is normally preset at
the factory for your planter configuration.
Clutch Overrides
In the event of clutch problems, the systems are
designed to act as follows:
• Electric (section) clutches disengage on loss of power.
• Pneumatic (row) clutches engage on loss of air pres-
sure.
To continue planting until a problem can be corrected,
take these steps:
• Electric clutch (standard):
Lock-up bolts are provided to engage them in the
event of power loss or clutch slippage. See page 48 for
lock-up instructions.
• Pneumatic clutch (Swath Command™):
Other than troubleshooting, no action is required at the
clutch. Pinch off any leaking tubing to prevent pres-
sure loss at other rows.
Null4:
Figure 49
CFM: Clutch Switches
26120
1
2
3
4
Rows
Clutch Switch Coverage
Model
Left
Center
Right
YP3025A-1230
01 - 04
05 - 08
09 - 12
YP3025A-16TR36
01 - 04
05 - 12
13 - 16
YP3025A-1820
01 - 06
07 - 12
13 - 18
YP3025A-2315
01 - 07
08 - 16
17 - 23
YP3025A-2415
01 - 07
08 - 16
17 - 24
YP3025A-24TR
01 - 08
09 - 16
17 - 24
YP3025A-3610
01 - 11
12 - 25
26 - 36
YP3025A-1270
01 - 04
05 - 08
09 - 12
YP3025A-2335
01 - 08
09 - 16
17 - 23
YP3025A-24TR70
01 - 06
07 - 16
17 - 24
Row groupings controlled by CFM switches may vary from this table if
Swath Command™ is installed. Swath Command™ is not available for
row spacings below 15in (38cm).