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744E Sprayer Control
CHAPTER 2 - INSTALLATION
Mounting Bracket
1. Make sure all switches on the 744E Sprayer
Control are turned to the “Off” position.
2. Determine the best location for the 744E Sprayer
Control in the vehicle cab according to the following
guidelines:
• pressure gauge should be readily visible
• switches should be within easy reach
• controllerbracketshouldrestonaatsurface
• 12 volt DC power source must be accessible
(maximum draw 10 amps)
3. Determine the proper routing for power cables and
pressure tube:
• away from operators’ movement area
• away from moving parts
• away from sharp objects
4. Installthemountingbracketusing¼″(6.4mm)drill,
machinescrews,nut,washersandlockwashers
as illustrated below. Attach the control housing
assembly to the mounting bracket using the
console adjusting knobs and washers.
Figure 2-1: Mounting bracket
Pressure Gauge
The tubing for the pressure gauge is supplied as part of
the wiring harness. To avoid chemical leakage into the
vehiclecab,thetubecouplermustbeinstalledoutside
of the vehicle cab. If a gauge isolator is used with the
system,itshouldbeinstalledinplaceofthecoupler,
also outside of the vehicle cab.
The pressure gauge should be checked for accuracy
eachseason.Iftheunitisequippedwithaliquid-lled
gaugeanditdoesnotreadaccurately,thegaugemay
needtobevented.Toventthegauge,removethefour
screws in the back of the sprayer control housing and
lift off the back. The rear of the gauge will be exposed.
Toventthegauge,clipofftheniboftherubberplug
in the back of the gauge or puncture it with a needle.
Oncethegaugehasbeenvented,donotstorethe
sprayer control on its back as this may cause a loss
ofuidfromwithinthegauge.Iffurtherinaccuracy
is suspected at 0 PSI (0 bar) and a gauge isolator
isbeingused,theisolatorlinemayneedtobebled
according to the instructions furnished with the gauge
isolator.
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