Koolance EXC-800-R User Manual
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User Manual
This menu affects when the built-in audio alarm will sound. Upon entering the
alarm menu, the temperature delta-t value will flash.
Press
▼ or ▲ to adjust this
value. Press
◙
to accept and return to the previous menu.
ALARM SET
(TEMP SET) ± 5C
In the above example, the alarm will sound if the temperature exceeds a 5°C
difference (+ or -) from the chiller’s currently active temperature sensor (see “TEMP
SET”). The maximum delta-T setting range for the alarm is 49°C.
The regular audio alarm is a repeating beep. If a steady alarm tone is heard, this
indicates the relay has also been triggered (see “RELAY SET”).
NOTE: The alarm temperature must be at least 1°C (1-2°F) lower than the relay
temperature. If an alarm temperature can not be increased, first increase the relay
temperature. Likewise, if a relay temperature can not be decreased, first decrease
the alarm temperature.
RELAY SET
Rear terminals are provided for a temperature-
configurable relay. Wires can be connected as
normally-open (NO), or normally-closed (NC),
labeled below the terminals.
To adjust the relay trigger point, enter the “RELAY
SET” menu.
Press
▼ or ▲ to adjust this value.
Press
◙
to accept and return to the previous
menu.
RELAY SET
(TEMP SET) ± 40C
In the above example, the relay will trigger if the temperature exceeds a 40°C
difference (+ or -) from the chiller’s currently active temperature sensor (see “TEMP
SET”). The maximum delta-T setting range for the relay is 50°C.
NOTE: The relay temperature must be at least 1°C (1-2°F) higher than the alarm
temperature. If an alarm temperature can not be increased, first increase the relay
temperature. Likewise, if a relay temperature can not be decreased, first decrease
the alarm temperature.
ALARM SET
PUMP SET
The pump speed can be manually set from 1 (lowest) to 10 (highest):
PUMP(1-10) 7LV : Pump Speed Level
The pump speed level will flash. Press
▼ or ▲ to adjust.
Press
◙
to return to the
previous menu.
DISPLAY SET
The display settings configure which values you wish to appear on the front display
and how they are shown:
DISPLAY
FIXED CYCLIC : Show 2 fixed values or cycle multiple values
The first option, “FIXED”, will flash. Press
◄ or ►
to change between these
options. Press
◙
to configure one of the selections, or press
▲ to exit.
If “FIXED”
is selected, two lines will be shown:
LIQ SET 20C : First line display option
EXT TEMP 21.4C : Second line display option
The first line will flash. Press
▼ or ▲ to change what this line will display:
LIQ SET : (Field varies) Shows current active sensor and user set-point
AMB TEMP : Shows ambient air temperature
LIQ TEMP : Shows reservoir liquid temperature
EXT TEMP : Shows external sensor temperature (if connected)
FAN : Shows condenser fan RPM
PUMP : Shows pump impeller RPM
FLOW : Shows liquid flow rate through the unit
Press
◙
to move to line 2, and similarly use
▼ or ▲ to choose what will be
displayed on the second line. Press
◙
again to exit.
▲
▼
WARNING
:
The cooling system’s pump can not be run dry for any
period of time. Never power-on the chiller without sufficient liquid in
the reservoir. Dry-running (and thereby damaging the pump) is not
covered under the Koolance product warranty.
!