Valley Rainger Linear, Руководство пользователя

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Rainger Linear 27
OVERVIEW
Central Pulse Tower Box
The central pulse tower box provides power to the
center drive gear motor depending on its position in
relationship to the last tower and the machine’s angle
to the guidance system.
The basic components include safety microswitch,
run microswitch, motor contactor, terminal block,
disconnect, overwatering timer, and pulse timer. See
Figure 27-1.
The overwatering timer is a safety device used to shut
the system off if one of the end towers fail to move
during the overwatering timer cycle. See Figure 27-2.
The overwatering timer cycle is adjustable from 0 to
60 minutes.
Each time the central pulse tower moves, the overwa-
tering timer is reset and another timer cycle begins.
The pulse timer is part of the linear steering system.
See Figure 27-3.
During operation, the linear machine moves at a 90°
angle to the guidance system. If this angle changes,
the linear irrigation machine must steer itself back to
the correct operating position.
When the linear machine steers, the pulse timer
restricts the run time of the leading end tower to a
percentage of the run time of the tower where the
pulse timer is located. This allows the trailing end
tower to catch up, while minimizing radical steering
and possible structural damage.
The pulse timer dial is factory set to 20 percent and
sealed in position.
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Figure 27-1 1. Central Pulse Tower Box
2. Safety Microswitch
3. Run Microswitch
4. Motor Contactor
5. Terminal Block
6. Disconnect
7. Overwatering Timer
8. Pulse timer
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Figure 27-2 1. Overwatering Timer
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Figure 27-3 1. Pulse Timer