Material clean-out, Tank clean-out – Great Plains NP4000 40-foot Operator Manual User Manual
Page 83
Great Plains Manufacturing, Inc.
Maintenance and Lubrication
79
2012-03-28
407-776M
Material Clean-Out
With proper attention to maintenance, end of day
clean-out, end of season clean-out and winterization,
you can substantially increase the life and reliability of
your fertilizer system. Protect the pump, clean the tanks,
strainers, lines and nozzles, and you can avoid costly
and time-consuming repairs at the next season.
Fertilizers are usually highly corrosive to metals other
than stainless steel. Suspension fertilizers can clog
system components in storage.
1.
Flush entire system with clean water.
2.
Remove end caps from booms and flush booms out
with water. Drain and replace end caps.
3.
Remove strainer and drain it out. Drain all lines and
tanks completely to prevent freezing damage.
4.
Flush pump per pump supplier manual. Fill pump
with RV antifreeze and cap off.
5.
Wash all spilled fertilizer off the applicator.
Tank Clean-Out
Refer to Figure 55 - which depicts the discharge valves open to
the selector valve (not shown)
For bulk recovery of unused material, or for rinsing out
tanks, dump line elbows
are provided at the tank
discharge valves
.
For connection of collection hoses, the elbows require a
hose with 1
1
⁄
2
inch inside diameter.
Possible Chemical Hazard:
Operate the valves from above. Wear chemical gloves. Inspect
the valves from below only when flow is shut off. Wear eye
protection when working under the tanks.
The valve operating handles have the word “FLOW” and
a raised arrow
that point in the open direction of flow.
This provides tactile indication of handle orientation.
1.
Connect any drain or collection hoses to the
elbows
.
2.
Check that the selector valve
is closed.
3.
Rotate one or both tank discharge valve
operating handles to the elbows.
4.
As desired, rinse out tanks from open lids.
Note: Parts of the tank plumbing system (to the selector
valve) are below the elbows. These lines must be
disconnected to completely drain them.
Possible Chemical Hazard:
Wear proper protective equipment as required by chemical
manufacturer. Avoid prolonged breathing of chemical fumes.
Wear respirator as required by chemical manufacturer. Some
chemicals will cause serious burns, lung damage, and death.
Avoid contact with skin or eyes. Seek medical assistance
immediately if accident occurs. Know what to do in case of an
accident.
Equipment Damage Risk:
Do not leave fertilizer or fertilizer residue in pump. Do not
allow air to enter pump. Even for short periods of storage, the
entrance of air into the pump causes RAPID and SEVERE
CORROSION.
Figure 55
Tank Discharge Valves
32017
14
14
13
13
1
14
13
Figure 56
Tank System Valves
31955
13
13
14
14
15
17
1
14
15
13