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Center Pivot 7000, 8000, 8120 Series 93
MAINTENANCE
Regular Maintenance
Sprinkler
Pre
season
1st
Pass
4th
Pass
Mid
season
Post
season
Remarks
Check the water pressure to make
sure it matches the sprinkler package
pressure.
X
X
X
Notify your local Valley dealer of any
changes.
Check sprinklers and nozzles for tight-
ness.
X
X
Check sprinkler for free movement.
X
X
Check sprinkler nozzles for wear.
X
X
X
Check pressure gauge or pressure
transducer for proper operation.
X
X
Check for plugged or partially plugged
nozzles.
X
X
X
X
Clean as required.
Flush entire machine.
X
X
See the Span Flushing Procedure and
Winterization in the Maintenance section.
Check end gun bearing and brake set-
ting.
X
X
Ensure the booster pump hose is
drained.
X
Alignment
Pre
season
1st
Pass
4th
Pass
Mid
season
Post
season
Remarks
Check all nuts and bolts. Tighten as
required.
X
X
Check connection of grounding bond
jumpers.
X
X
Visually check for contactor wear and/
or pitting. Make sure the power is OFF.
X
Pitted or burned contact points indicate
low voltage.
Visually check the surge suppressor
connection.
X
Align the pivot and check all safety
switches.
As needed. Call your local Valley dealer.
Check for proper safety microswitch
position.
As needed. Call your local Valley dealer.
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