LG LCWW, Operation & Maintenance Manual

Page: 36 / 119

Names of operation unit
36
4. CONTROL SYSTEM
ENGLISH
Name Description
LCD screen
It is the color LCD(Liquid Crystal Display) showing operation information and status
as in text(Korean, English, Chinese) or animation graphic.
Menu operation key
It is the key to operate menu displayed on the LCD, such as, selection of the display-
ing screen or setting of operation condition, etc. The functions of the operation keys
are is displayed at the bottom of the LCD screen, and the functions of the operation
key changes as with the screens selected.
Flow control valve manual op-
eration key
It is the key to operate(open/close) the solenoid valve manually. When “Valve man-
ual” indicator lamp is on, it is in the state where that manual operation is possible.
Open/close key operates only when the key is pressed down.
Interlock control
manual operation key
It is the key to Run /Stop interlock control manually. When “interlock control status"
indicator lamp is off, it is the state that manual operation is possible, and it starts to
operate when it is pressed down for about 1.5 seconds or longer.
Alarm lamp
When a problem or caution warning occurs the alarm lamp is turned on.
When the alarm lamp is on, the message on about the alarm is displayed on the
message display line in the LCD screen. At this time, the release key shows up and
buzzer will sounds. If you press the release key at this time, the buzzer will stop and
the release key will disappears. And when the problem alarm disappears, the mes-
sage will also disappears.
Run /Stop key
It is the key to Run /Stop the chiller.
It works when you press it down for about 1.5 seconds or longer, and run indicator
lamp is on during running, and stop indicator lamp is on when it is stopped.
Compressor 2 Run /Stop key
It is used when 2 compressors are operated. It is the key to Run /Stop the second
compressor. In the product where 2 compressors are installed, it is used as the Run
/Stop key of the Compressor 2.
It displays the Run /Stop status of the chiller and devices attached to the chiller and
as well as the status of the chilled water, cooling water, and flow rate. The indicator
lamp is on when it is operated.
Table 5 Names of operation parts