Great Plains PFC2000 Operator Manual - Manual (Page 36)

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407-158M 03/28/2007
Extended Parking
When parking for more than 24 hours, residual fertil-
izer must be flushed from the pump, otherwise salts in
the fertilizer will corrode the pump. In general, this
means that residual fertilizer in the tank(s) first needs
to be recovered or drained.
Operating the pump without the planter requires clutch
lockup. See “Electric Clutch Lock-Up” on page 32.
The cart may be towed for this pumping, or the right
wheel may be raised on a stable jack-stand, and the
right wheel turned by hand.
8. First perform step 1 through step 7 of “Short-Term
Parking” on page 33, but position the cart at a
location where residual fertilizer may be safely
recovered or drained from the tanks and lines.
Drain Bulk Material
If a modest or substantial quantity of fertilizer remains
in either tank, drain it via quick-fill inlet.
9. Connect a hose to the inlet, or place a large con-
tainer there. Make sure the inlet shut-off valve is
closed.
10. Open the shut-off valve at the inlet to the tank to
be drained.
11. On the PFC2000, set the fill selector valve to the
tank to be drained.
12. Slowly open the quick-fill inlet shut-off valve, and
drain until flow ceases.
13. On the PFC2000, repeat for the other tank.
Drain Lines
Even after tank drain-back, several gallons of materials
are likely to be present in the hoses, and trapped
between valves in the various circuits. A low bucket is
needed for thorough gravity draining of hose lines.
14. Loosen the flange clamp at the outlet of each man-
ifold valve (#1, 2 & 3), to admit air.
15. Place the bucket or collection pan under each for-
ward hose. Slowly open the connector valve to
fully open and drain the line. If any part of the hose
line is lower than the connector, lift the hose mov-
ing from back to front, to drain the line. Close the
valve. Repeat for each 2in hose.
16. Repeat step 15 for the 3/4in gauge line. This will
not fully drain this line, as it is open through the
manifold and back to the pump. It will be further
flushed with the pump.