Hardi N Series User Manual

48 HARDI
®
N-SERIES 3-PT SPRAYER DIAPHRAGM OPERATOR'S MANUAL
Formula Method
1. Check your spraying speed. Measure a test strip of at least 200
feet (300 feet is ideal). Travel the distance at the speed you plan on
spraying and record the time it takes to travel the distance. Read
from the chart or use the formula to fi nd your exact travel speed.
Travel Time (in seconds)
Speed in MPH 200 ft. 300 ft.
3.0 45 68
3.5 39 58
4.0 34 51
Formula: 4.5 30 45
Distance (ft.) x 0.68
= MPH
5.0 27 41
Time (sec.) 6.0 23 34
7.0 19 29
7.5 18 27
8.0 17 26
9.0 15 23
2. After determining your forward speed and choosing your application
rate according to the recommendations on the chemical container,
use the following formula to calculate the total nozzle capacity:
Formula:
Total GPM =
W (ft.) x GPA x MPH
495
Note: W = Total measured sprayed width (ft.) at operating pressure.
3.
To initially calculate which nozzle to use, let W = 30 ft., 40ft. or 50 ft.
for HARDI
®
Giant End Nozzles G-1000 Red, G-1200 White or G-
1600 Blue, respectively (Fig. 24 & Fig. 25).
Example: Total sprayed width: 40 ft. (G-1200 White nozzles)
Application rate: 20 GPA
Forward speed: 7 mph
11.3 GPM =
40 ft. x 20 GPA x 7 mph
495

Hardi N Series Specifications

General

Brand	Hardi
Model	N Series
Category	Paint Sprayer
Language	English