6
Control Units 3300-0082, 3300-0087 and 3300-0088
Installation and Operation
Description
The 3300-0087 and 3300-0088 control units are
designed for the control of pressure and output from 0 to
290 PSI. They are supplied with mounting brackets for
mounting separately from the pump. They consist of a
main pressure regulating valve and 3 on-off outlet valves.
For individual boom section control, model 3300-0088
includes a main on-off lever that can be put in the off
position for complete bypass to the tank.
Safety Note: Main relief valve bypass must be
connected to the tank directly without restrictions (such
as ball valves).
flush with clean water.
Model 3300-0087 and 3300-0088 Installation
Locate mounting bracket and secure in desired position. The
pressure line from the pump is connected to main inlet hose
barb (1). The return line is connected unrestricted to the main
bypass hose barb (2). Boom sections are connected to the outlet
boom hose barb (3).
Operation
1. Before starting pump, adjust relief valve for the lowest
possible pressure by screwing the pressure adjustment knob
(4) all the way counterclockwise.
2. On Model 3300-0088, turn the main on-off lever (6) to the full
bypass (up) position.
3. Open all boom feed lines by lifting lever(s) to the up position.
4. Start pump and allow liquid to flow through the control unit.
5. Turn main on-off valve lever (6) to on position (down) and
adjust to the desired spraying pressure by turning the
pressure adjustment knob (4). Turning the knob clockwise
will increase the pressure.
6. The 3300-0087 or 3300-0088 control unit is now ready for
use. After each use, flush the unit with water. For extended
or winter storage, drain the unit completely.
Figure 5. Model 3300-0087 and 3300-0088
Pressure
Adjustment Knob
1. Main Inlet
5. Outlet Valve Levers
3. Outlets
to Boom
Sections
6. Main
On-Off Lever
2. Main Bypass
Pressure Gauge
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