Smithco Spray Star 1754/1754D Operator Manual (2010) - Manual (Page 15)

13
Operation
CONSOLE FEATURES
A. Master Boom Switch - Activates or stops boom spraying.
B. Individual Boom Switches - Used to activate any of up to 3 booms on a sprayer.
C. PSI Gauge - Indicates the pressure of fluid in the system.
D. Pressure Switch - Used to activate the motorized control valve
E. Fuse Holder - The fuse holder holds one 15 Amp fuse.
CALIBRATING THE PRESSURE GAUGE
The pressure tap on the Raven Sprayer Control system is located away from the nozzles, thus, there can be a pressure
difference between nozzle pressure and gauge pressure at the console. Therefore, for best results, Raven recom-
mends the following procedure:
1. When the sprayer is ready and the tank is filled with water (No chemicals at this time), attach an accurate
pressure gauge to a nozzle in place of the spray tip.
2. Start up the pump, turn on the electric shut-off valves and adjust the pressure control valve so that the desired
pressure is maintained on the gauge at the nozzle.
3. Because of pressure drops through the system, the pressure shown on the gauge in the console may read
slightly higher than the gauge at the nozzle. Use this console pressure reading as your reference point for
maintaining the desired pressure at the nozzle.
PROCEDURE TO RE-CALIBRATE FLOWMETER
1. Enter a Meter Cal number of 10 in Meter Cal Button
2. Enter a Total Volume of Calibrating the Pressure Gauge in Total Volume button
3. Switch Off all booms.
4. Remove a boom hose and place in calibrated 5 gallon container
5. Switch on appropriate boom switch and master switch. Pump exactly 10 gallons.
6. Readout in Total Volume is the new Meter Cal Number. Should be within 3% of number stamped on flowmeter.
7. Repeat the procedure several times to ensure accuracy.
8. To verify calibration, fill applicator tank with predetermined amount of measured liquid. DO NOT RELAY ON
GRADUATION NUMBERS ON MOLDED TANK. Empty tank under normal operatin conditions. If the number under
totla volume is different from the predetermined amount of measure by more than 3% compete calculation in
back of book.
9. Enter corrected Meter Cal before resumin application.