Hunter Industries MINI-CLIK-C Installation Card Page: 2

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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” o. The sprinkler
zone should stop instantaneously. If it does not, check wiring for
correctness. 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
aer rainfall quantities of ⁄", ⁄", ⁄",
and ⁄". To adjust it to the desired
shut-o 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
aer the rain has stopped is
determined by weather conditions
(e.g., wind, sunlight, humidity).
These conditions will determine how fast the hygroscopic discs dry out.
Since the turf is also experiencing the same conditions, 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.
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.
There is no required maintenance for the unit. The Mini-Clik does not have to
be removed or covered for winterizing purposes.
Follow these simple checks rst 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 o 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 O Even Aer 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 veried 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).
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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.
Figure 4
Wiring to Your Irrigation System
IMPORTANT: The standard model Mini-Clik is sold and designed
for hooking up to 24-volt irrigation controllers only. For wiring to
110- or 220-volt irrigation controllers, consult your distributor or
the factory. All wiring must conform to National Electrical Code or
applicable local codes. For model Mini-Clik-C: WARNING! This unit is
designed to be installed in conjunction with 24 VAC circuits only. Do
not use with 110 or 220 VAC circuits.
Other Controllers
The two most common situations are shown below. For non-standard
wiring situations, consult your distributor or request our
non-standard wiring information packet.
Vent Ring Vent