APPENDIX
F
Manual No. 016-0171-122 Rev. I 263
A ppendi x F
Tiered Booms
Note: Specialized pluming, cabling and a relay box or product controller node are required to utilize a
tiered boom configuration. Generally, sprayers are not setup for this feature from the factory.
The Tiered Boom feature of Viper Pro allows the machine to operate over a wider range of application rates
than a normal single boom operation. A tiered boom system has two tiers of boom sections stacked on top of
each other. Each tier of booms is fitted with a set of nozzles which may or may not be different from the other
tiers.
The boom tiers are connected to shut-off valves, which are controlled by a CAN single product or product
controller node. Through the controlled use of individual or both boom tiers, a much wider range of product
control is provided. A low application rate can be applied by turning on the first tier booms. Higher application
rates can also be applied by switching to the second tier booms that have larger volume nozzles and an even
higher application rate can be achieved by switching on both boom tiers.
The spray tips used on a tiered boom system must be extended range tips. In addition, the volume per minute
of the second tier tips should not exceed 1.5 times the volume of the first boom’s tips. The tier switching points
should be set to 80% of the full flow volume for the boom tier tips.
For Example:
• Maximum Volume Per Minute Tier 1 = 25 GPM [94.6 L/min]
• Maximum Volume Per Minute Tier 2 = 38 GPM [143.8 L/min]
• Tier 1 switch point = 25 GPM [94.6 L/min] x 0.8 = 20 GPM [75.7 L/min]
• Tier 2 switch point = 38 GPM [143.8 L/min] x 0.8 = 30 GPM [113.6 L/min]
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