9
R
EV
.
12-21
5.1
S
IMPLE
O
PERATION
The chiller comes with preset operating parameters that will work
well for most applications. If temperature control at one temperature
is desired, follow the steps below.
1)
Turn on the chiller and wait for display to read TEMP.
2)
Press the UP or DOWN keys to change SETTEMP1 to the
desired set point.
3)
Press ENTER to accept the value.
4)
Press the START/STOP key to begin controlling to the
temperature just entered (SETTEMP1). The Operating Mode
will now show “‒” (cooling) or “+” (heating).
5)
Pressing START/STOP while the unit is controlling temperature
will stop temperature control. The Operating Mode will now
show “*” for Standby (not controlling).
Caution
: Do not externally shut off the flow of coolant for more than
a ten second period; pump damage will result if run deadheaded/dry
for extended periods of time.
The chiller will now control to the set point temperature. To change
the set point temperatures just press the UP or DOWN keys again to
change SETTEMP 1 to the new set point, followed by ENTER and
then START/STOP. The Operating Mode will now show “‒”
(cooling) or “+” (heating). If the Operating Mode shows “*”, press
START/STOP to begin controlling.
Status Menu:
The status menu displays the chiller operating status
and coolant temperature. The chiller operating mode is shown in the
display’s first character: (See Figure 5)
Figure 5: Operating Display
*
= Standby mode, chiller is not controlling temperature
‒
= Cooling mode, chiller is controlling temperature and process
fluid temperature is above the set point
+
= Heating mode, chiller is controlling temperature and process
fluid temperature is below the set point
The process fluid (coolant) outlet temperature is shown after TEMP
in °C or °F.
Pressing the UP or DOWN keys with the # of cycles set to zero
(default) will change the set point temperature upon pressing the
ENTER, then the START/STOP key.
‒ TEMP 20.0 °C
Temperature
Units
Process Fluid Temperature
Operating Mode