3
110498-3
Manual Operation
The fan speed and pump are set by the user.
To activate the manual mode from the ‘Off’ state, press the ‘Mode’
button until ‘Manual is displayed. If the control is in the ‘Auto’ mode,
you can change to manual mode by pressing either the ‘Mode’, ‘Fan’
or ‘Pump’ buttons. Pressing the ‘Fan’ button changes the fan from
High to Low to Off and back to High. Pressing the ‘Pump’ button
changes the pump from On to Off and back to On.
The LCD will display ‘Manual’ on the left and the fan and pump
settings on the right. The fan speed will be displayed as Fan Hi or
Fan Lo. If neither are displayed the fan is off. The pump status will
be displayed by the LCD as ‘Cool’ (if the fan is running) or ‘Pre-Wet’
(if the fan is off). With the fan and pump both running ‘Cool’ will be
displayed. If only the fan is running ‘Vent’ will be displayed.
Time Delay Operation (Timer Mode)
Delayed start or fi nish in ‘Auto’ or ‘Manual’ mode.
The ‘Timer’ button is used to set a delay period between 1 and 12
hours in 1 hour increments.
If the cooler is operating (in ‘Auto’ or ‘Manual’ modes) when the
‘Timer’ button is pressed, the delay period determines when the
cooler switches off. If the cooler is Off when the ‘Timer’ button is
pressed, the delay period determines when the cooler starts in ‘Auto’
mode. The set temperature will be the last setting when running in
‘Auto’ mode.
‘Timer Delay’ and the remaining time are displayed on the LCD while
the timer feature is activated.
You can cancel the Timer function at any time by pressing the ‘Timer’
button. The ‘Timer Delay’ indicator will no longer be displayed.
In The Event Of A Power Outage
When power is restored after a power outage, the thermostat will
resume operation in the mode selected prior to the power outage. If
the timer mode is active, the time will be restored to the hour indicated
prior to the outage.
Wiring Diagrams
Thermostat Operation
Automatic Operation (Cool Mode)
The fan and water pump are controlled automatically to achieve the
desired comfort level.
This mode is activated by pressing the ‘Mode’ button until ‘Auto’ is
displayed on the LCD. The ‘Mode’ button changes the control from
Off to Auto to Manual and back to Off.
The Set temperature (the target temperature for control) may be altered
by repeatedly pressing or holding the ‘Up’ or ‘Down’ buttons. The
LCD will display the ‘Set’ rather than ‘Room’ temperature for a short
time after pressing the ‘Up’ or ‘Down’ button.
On starting or after the pump has been off for a period of time, the
pump will start without the fan to allow the media to absorb water.
This is called Pre-wet and lasts for 2 minutes, indicated by ‘Pre-
Wet’ fl ashing on the LCD. The Pre-Wet cycle can be bypassed by
pressing the ‘Fan’ button and then pressing the ‘Mode’ button until
‘Auto’ is displayed.
During automatic operation, the control performs a water purge cycle
every 8 or 12 hours of pump operation. This interval can be toggled
between 8 or 12 hours by simultaneously holding the ‘Pump’ and
‘Fan’ buttons for 5 seconds. The selected interval is displayed for a
short time. This action also starts a manual dump cycle.
•
Check amperage.
With pads wet and unit started, check amperage
draw with an amperage meter.
•
Adjust pulley if necessary.
If amperage draw is less than motor
rating, turn off electrical power and remove inspection panels.
Unplug motor inside cooler, this will protect you from someone
turning on unit while you are working inside. This should be
done for your safety. Adjust pulley to a
larger diameter and readjust belt tension,
plug motor in, install inspection panels,
and retest amperage draw. Repeat this
process until correct amperage draw is at-
tained. Increasing motor pulley diameter
increases amperage draw. Decreasing
motor pulley diameter decreases amper-
age draw (see Fig. 6).
CAUTION:
Do not operate cooler with larger amperage draw
than specifi ed on motor plate.
120 Volt
240 Volt
Decrease
Amperage
Fig. 6
FAN MOTOR
THERMOSTAT
RECEPTACLE
RECEPTACLE
CIRCULATING PUMP
RECEPTACLE
DRAIN PUMP
120 VAC
WHITE
RED
COOLER TERMINAL BOX
WHITE
GREEN
BLACK
GREEN
WHITE
BLUE
=WIRE NUT
SWITCH LEADS
VIOLET
BLUE
YELLOW
GRAY
BLACK
RED
GREEN
WHITE
GRAY
GROUND
TOGGLE SWITCH
(11)
FL
o
FH
i
FCo
m
LIN
K
L1
N
NL
in
k
PP
PCo
m
DP
DCo
m
DUMP
PUMP
FAN
PWR. SUPPLY
ORANGE
ORANGE
BROWN
BROWN
ORANGE
BLUE
WHITE
GREEN
SWITCH LEADS
=WIRE NUT
WHITE
GREEN
BLACK
GREEN
WHITE
COOLER TERMINAL BOX
RED
BLUE
GREEN
WHITE
BLUE
ORANGE
BROWN
BROWN
ORANGE
ORANGE
WHITE
240 VAC
DRAIN PUMP
RECEPTACLE
CIRCULATING PUMP
RECEPTACLE
RECEPTACLE
THERMOSTAT
FAN MOTOR
PWR. SUPPLY
FAN
PUMP DUMP
DCom
DP
PC
o
m
PP
NLink
N
L1
LIN
K
FC
o
m
FH
i
FLo
(11)
TOGGLE SWITCH
GROUND
GRAY
ORANGE
GREEN
RED
BLACK
GRAY
YELLOW
BLUE
VIOLET
