GREAT PLAINS YP1630F-1630, Operator'S Manual, Page: 46 / 142

Great Plains | 401-832M | 2018-07-31 Table of Contents Index 42
YP1630F-1630 and YP1630F-1670 Table of Contents Index Operating Instructions
Fan General Operating Information
Dry fertilizer metering rate is set by the variable rate gear
box; however, the fan must be set to provide sufficient
manifold pressure to deliver the metered material from
the airbox to the rows.
Starting Fan
Use tractor remote hydraulic valve flow control to set fan
speed. Always start the fan with a low flow setting.
Monitor fan output with the Magnehelic
®
pressure gauge.
Gradually bring fan up to the pressure recommended for
your rate. Normal readings are in the 15 inches to
30 inches of water (H
2
O) range, and vary with material
properties and application rate.
At excessive rpm, too much air flow can cause:
•
fertilizer to plug the air box
•
oil heating
•
slow lift times
•
fan motor damage, over 5000 rpm
If desired pressure cannot be reached, chances are the
fan is running backwards. Reverse the inlet/return lines
at the hitch.
If air system does not operate suitably at suggested
pressures, see “
Fertilizer Delivery Troubleshooting ”
on page 67.
Stopping Fan
Move circuit level to Neutral, or slowly reduce rate to
zero.
Marker Operation
Electrocution Hazard:
Check for overhead lines before operating markers. If a
marker contacts an electrical line, all metal parts of the
planter and tractor can have lethal voltages present. There
may be no indication of this condition until a person completes
the circuit to ground. At higher voltages, electrocution can
occur without direct contact.
15.0 170 3 500
15. 8 200 3 600
17.9 250 38 00
20.4 3 00 4000
2 3 .4 3 50 4 3 00
26.6 400 4700
15.0 150 3 500
16.7 200 3 700
19.4 250 3 900
22.5 3 00 4 3 00
26.1 3 50 4600
3 0.0 400 5000
Manifold
Pre ss ure
Inche s H
2
O
Application
Rate
k g /ha
Approximate
Fan S peed
rpm
Manifold
Pre ss ure
Inche s H
2
O
Application
Rate
pound s /acre
Approximate
Fan S peed
rpm
Equipment Damage Risk:
Make only gradual changes to fan hydraulic flow (other than
shifting to Neutral). Fan impeller inertia and momentum can
cause pressure spikes in the motor in response to abrupt
changes. This can cause motor seal damage.
Do not operate fan above 5000 rpm (30 inches on gauge).