Toro 34230 Operator's Manual page 41

Testing the Sprayer Nozzle Discharge
Operator supplied equipment: Have a stop watch
capable of measuring ± 1/10 second and a container
graduated in 50 ml (1 fl oz) increments.
Note:
Ensure that the spray system is clean and
there is 1/2 tank of clean water.
1. Engage the parking brake and start the engine.
2. Set the sprayer-pump switch to the O
3. Pull the tank-agitation lever to start the tank
agitation.
4. Move the throttle to the F
5. Push the tank-agitation lever to the O
Note:
Shut off the agitation to ensure proper
spray pressure and distribution.
6. Use the sprayer—pump switch to adjust the
sprayer-system pressure to 40 psi (2.8 bar).
Note:
The red and white nozzles installed on
this sprayer have a normal operating pressure
of 40 psi (2.8 bar).
7. Align the graduated container under each nozzle
for 19.7 seconds.
Note:
Record the amount of water collected
from each nozzle in the collection worksheet.
1. Graduated container
N
position.
AST
FF
Figure 51
2. Personal protective
equipment—chemical
resistant gloves
Collection Worksheet
Left sprayer
nozzle
Test
1
Test
2
Test
3
position.
8. Repeat test step
2 times.
9. Set the sprayer-pump switch to the O
10. Calculate the average quantity of water
position.
discharged for each nozzle; use average
discharge formula.
Average Discharge Formula
Formula
Example
center
nozzle—narrow
pattern (red)
•
Right nozzle—record the
average discharge quantity here:
•
Center nozzle—record the
average discharge quantity here:
•
Left nozzle—record the average discharge
quantity here:
Converting the Time and Collection Results
to Flow Rate
1. Convert the milliliters (fluid ounce) quantities
that you calculated in step
Sprayer Nozzle Discharge (page 41)
gallons) using the quantity conversion formula.
g027502
Note:
1 US gallon = 128 fl oz
Quantity Conversion Formula
Formula
Example
center
nozzle—narrow
pattern (red)
41
Center sprayer
nozzle
ml (fl oz) ml (fl oz)
ml (fl oz) ml (fl oz)
ml (fl oz) ml (fl oz)
7 for each nozzle an additional
test 1 + test 2
+ test 3
=
3
475 ml (16.05
fl oz) + 507 ml
(17.15 fl oz) + 504
=
ml (17.05 fl oz)
3
.
.
10
1 L = 1000 ml
Result (X) ml (fl oz)
0.1 L (128 fl oz)
490 ml (16.75 fl oz)
0.1 L (128 fl oz)
Right sprayer
nozzle
ml (fl oz)
ml (fl oz)
ml (fl oz)
position.
FF
The average spray
nozzle discharge in
19.7 seconds
0.49 L (16.75 fl oz)
.
of Testing the
to liters (US
=
(X) L (US gallon)
0.49 L (0.13 US
=
gallon)