30-2
Throttling Valve
The throttling valve is required to maintain back-
pressure on the pump and keep the flow meter full if
spraying at low flow rates and to aid in issues with
precise flow control at low flow rates. If you require
more assistance, contact Hagie Customer Service
Department.
THE BOOM
Roll Locks
The roll locks, located on both the left and right
side of the transom, are used to allow (or not) the
active roll of the pivot transom.
The fully extended position (locked) should only
be used during maintenance and storage situations.
The fully retracted (active roll/ unlocked) position is
the only position the roll locks should be in during the
operation of the 120ft boom. Failure to retract the roll
locks prior to operation may result in damage to the
boom and auto-leveling system.
Main Pivot/ Break-Away Cylinders
The main pivot/ break-away cylinders are respon-
sible for the horizontal extension of the booms to the
spray position. They also provide the break-away pro-
tection of the boom.
Summary of Contents for UpFront 120
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