Koolance EXC-800-R Bedienungsanleitung PDF herunterladen (Seite 7)

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.

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