Toro Mini 8 Series User Manual

Mini 8, Gear Driven Sprinkler
User's Guide
The Mini 8 Rotor is designed for residential and light commercial
installations. It comes in three sizes, 4" pop up, 6" pop up and 12" pop up.
Nozzling Up The System
The 1.5 GPM nozzle comes pre-installed from the factory. A nozzle tree
consisting of four additional nozzles is provided with each rotor (Figure 1).
Please see the nozzle performance chart for flow rates. By using various
combinations of nozzle flow rates, you can balance the sprinklers to
achieve approximately the same precipitation rates.
Every case of Mini 8 product contains two Mini 8 rotor keys. The Mini 8 key
is used to pull up the riser, to remove the nozzle, to reduce the radius and
to adjust the arc (Figure 2).
Figure 1 Figure 2
Arc Adjuster
Mini 8
Nozzle Tree
Rotor Key
To Extract/Insert A Nozzle
Use the winged portion of the key to pull the riser up in order to access the
nozzle orifice. Insert the key into the pull-up hole (Figure 3), turn it 90˚, and
pull up. Hold the riser in the pulled up position.
Using the end of the key, turn the radius adjustment screw
counterclockwise until it clears the top of the nozzle. See Figure 4A.
Insert the key into the nozzle right side slot with the pointed end of the key
facing upwards. Use the point to extract the nozzle out. See Figure 4B.
To install a nozzle, press the nozzle into the nozzle socket
(Figure 5A). Turn the radius adjustment screw clockwise to its desired
location ensuring that it is in a position to hold the nozzle in place even if
radius reduction is not required (Figure 5B).
Figure 3 Figure 4
A
B
To Set The Arc
The Mini 8 rotor arc is pre-set from the factory at 90˚.
The Mini 8 rotor has a fixed LEFT stop. To find the left stop position,
rotate the nozzle turret clockwise (to the right) until it stops, then rotate the
nozzle turret all the way back to the left.
To increase the arc, insert the key into the arc adjuster shown in Figure 6.
Hold the turret in place while turning the tool clockwise. Keep turning until
the arc indicator arrow points to the desired arc angle.
As an example indicated in Figure 7, the arc is set to 270˚. The sprinkler
will then water from the left stop and rotate clockwise (see Figure 8) until
270˚, the adjusted right stop, is reached. The sprinkler will then return back
to the left stop and repeat the cycle.
To decrease the arc, insert the key into the arc adjuster. Hold the turret in
place while turning the tool counter clockwise. Keep turning until the arrow
points to the desired arc.
To adjust the arc while the rotor is running, turn the turret gently in the
direction that it is spraying. Once the left stop has been located, follow the
Pull-Up
Radius Adjustment/
directions above to increase or decrease the arc.
Keyhole Nozzle Retention
Screw
To line up the left stop with landscape features which define the left side of
the irrigated arc, simply turn the housing cannister and point the left stop
towards the desired direction. You may also pull the riser up with the key
and rotate the LOWER portion of the riser until the left stop is at the
Arc Angle
desired position. DO NOT rotate the TOP portion of the riser.
Indicator
Figure 6
Increase
Decrease
Installation Tips
The Mini 8 rotor should be installed with
the cap at the finished grade. It is not
designed to be installed below grade. See
Figure 9.
Figure 5
B The radius adjustment screw can be used
to reduce the radius throw by up to 25%.
You should note that this does not reduce
the flow of the nozzle.
A
Left Stop
Figure 7 Figure 8
Position
Left Stop Position
Adjustable
Right Stop
Angle Indicator
Position
Points To 270˚
(270˚)
Figure 9
Screen Maintenance
The screen can be accessed through the
bottom of the riser. Remove the cap of the
Mini 8 and lift the riser assembly out of the
housing cannister. If plugged, the screen can
be removed, cleaned, and re-inserted into
the riser.
Mini 8 Nozzle Performance
Nozzle Pressure Flow Radius Pressure
(Gallons) (PSI) (GPM) (Feet) (kPa)
0.75 30 0.8 19 207
40 0.9 20 276
50 1.2 21 345
1.0 30 1.1 22 207
40 1.3 23 276
50 1.5 24 345
1.5 30 1.2 26 207
40 1.4 28 276
50 1.6 30 345
2.0 30 1.4 30 207
40 1.7 31 276
50 2.0 32 345
3.0 30 2.3 33 207
40 2.6 34 276
50 3.0 35 345
For Product Inquiries:
The Toro Company
5825 Jasmine Street
Riverside, CA 92502-0489
Tel: (909) 688-9221
(800) 225-2839
© 2002 The Toro Company
Figure 9
Screen
Flow Flow Radius
3
(L/M) (M /H) (Meters)
3.03 0.2 5.8
3.41 0.2 6.1
4.54 0.3 6.4
4.16 0.2 6.7
4.92 0.3 7.0
5.68 0.3 7.3
4.54 0.3 7.9
5.30 0.3 8.5
6.06 0.4 9.1
5.30 0.3 9.1
6.43 0.4 9.4
7.57 0.5 9.8
8.71 0.5 10.1
9.84 0.6 10.4
11.36 0.7 10.7
12" Pop Up
6" Pop Up
4" Pop Up
Form Number 373-0266 Rev. A