700802 LIT-315 Rev D 8/18
© 2018 Hunter Industries Incorporated | www.hunterindustries.com
24-Volt Solenoid Valves Only (No Booster Pump) — Figure 3
With the two wires from the Mini-Clik at the controller, locate the
“common ground” wire of the solenoid valves. If it is connected to
the common terminal on the controller, disconnect it. Attach one wire
of the Mini-Clik to the “common” terminal (usually marked “C”) on the
controller. Attach the other wire of the Mini-Clik to the common wire
leading to the valves.
Note: The common wire to the valves does
not
have to be interrupted at the controller. The Mini-Clik can be wired
anywhere along the common wire line (an example would be at the
valve box location).
Operation Check to Verify Correct Wiring
Turn on one zone of the irrigation system that is visible while you are
in reach of the Mini-Clik. Manually depress the spindle at the top of
the Mini-Clik until you hear the switch “click” off. The sprinkler zone
should stop instantaneously. If it does not, check wiring for correct-
ness. It is not necessary to “wet” test the Mini-Clik, although it will
test the operation accurately, if desired.
Adjustments and Operation
The Mini-Clik can keep the
irrigation system from starting or
continuing after rainfall quantities
of 1/8", 1/4", 1/2", and 3/4". To adjust it
to the desired shut-off quantity,
rotate the cap on the switch
housing so that the pins are located
in the proper slots (Figure 4). Do
not forcibly twist the cap, as this
could break the pins. The time
that it takes the Mini-Clik to reset
for normal sprinkler operation after
the rain has stopped is determined
by weather conditions (e.g., wind,
sunlight, humidity). These conditions will determine how fast the hygro-
scopic discs dry out. Since the turf is also experiencing the same condi-
tions, their respective drying rates will roughly parallel each other. This
means when the turf needs more water, the Mini-Clik is already reset to
allow the sprinkler system to go at the next scheduled cycle. There is an
adjustment capability on the Mini-Clik that will slow down the reset
rate. By turning the “vent ring” (Figure 4) to completely or partially
cover the ventilation holes, the hygroscopic discs will dry more slowly.
This adjustment can compensate for an “overly sunny” installation
location, or peculiar soil conditions. Experience will best determine
the ideal vent setting.
1⁄8
1⁄2
1⁄4
3⁄4
Vent Ring
Vent
Bypassing the Sensor
On Hunter controllers, move the rain sensor switch to “Bypass.”
Note: Using
the “manual” switch on non-Hunter controllers typically will not bypass
the sensor.
Maintenance
There is no required maintenance for the unit. The Mini-Clik does not have to
be removed or covered for winterizing purposes.
Troubleshooting
Follow these simple checks first before assuming the unit is bad and replacing it.
If the system will not come on at all:
A. First, check to see that the Mini-Clik discs are dry and the switch “clicks”
on and off freely by pressing the top of the spindle.
B. Next, look for breaks in the wire leading to the Mini-Clik and check
all wire connections.
C. Finally, if the Mini-Clik is dry and the wire leading to it is good, check the
Mini-Clik switch by nicking the insulation of the two “outer” wires near the
unit to expose copper. Turn one sprinkler zone on, and apply a “jumper
wire” across the two exposed wires. If the sprinkler now comes on, the
switch is bad. Wrap all nicked wires with electrical tape.
If the System Will Not Shut Off Even After Heavy Rainfall
A. Check wiring for correctness (see “Operation Check to Verify Correct Wiring”).
B. Check the sensitivity setting (move the cap to a more sensitive setting).
The Mini-Clik is an accurate rain gauge and can be verified by setting up a
tube-type rain gauge in the same vicinity and making periodic readings.
C. Is the rainfall actually hitting the Mini-Clik? Check for obstructions to
rainfall (e.g., overhangs, trees, or walls).
Need help? Visit
hunter.direct/miniclikhelp
All Mini-Clik models are listed by Underwriters Laboratories Inc. (UL). Samples of these
devices have been evaluated by UL and meet the applicable UL standards for safety.
1
2
3
4
Mini-Clik
Controller
C
Figure 3
Solenoid
Valves
Common Wire to
All Valves
Figure 4
Figure 3
Mini-Clik
Controller
Common Wire to
All Valves
Valves
Solenoid
