Brandt SB4000, Руководство оператора

Страница: 78 / 145

67
4.6 NOZZLE CHECK - FLOW RATE & PATTERN
UNIFORMITY
CAUTION! To ensure personal safety, never add chemicals to the sprayer when performing nozzle
flow checks. Follow the chemical manufacturer’s recommendations on proper safety
procedures
when working with chemicals.
1. Set the pressure to the nozzles to 275 kPa (40 psi).
2. Place the calibration container under nozzle tip to catch the water sprayed. Follow the directions on the
calibration container.
3. Place the container on a level surface. Record the number of liters (ounces) sprayed and the spray pattern.
Repeat for each of the nozzles.
4. Add the amounts sprayed for all nozzles and divide by the total number of nozzles to obtain an average flow
rate.
5. Replace all tips that have a flow rate that is 5% or more above average or those with visibly distorted
patterns. Clean all tips that have flow rates 5% or more below average and then recheck their flow rates.
IMPORTANT: To prevent nozzle damage, never use a metal object to clean nozzle orifices. Use a plastic or
wooden probe. An old tooth brush also works well.
6. If using US or Imperial units, convert the average flow rate from ounces per minute to gallons per minute
- US gpm= ounces/128
- Imp. gpm= ounces/153.7
Conversion is unnecessary for metric units as flow is measured in L/min.
7. Turn to the Nozzle Delivery Rate Charts in Section 4.9. Find the flow rate (gpm) for the tips you are using when
tested at 275 kPa (40 psi). The actual value should be within 5% of the rated value of the tip.