LG RCAW Operation & Maintenance Manual page 14

General
Compressor shutdown temperature means the temperature where the compressor must be shut downed by low temper-
ature. Here, the default value is 5.0°C(41°F). Compressor restart temperature means the temperature where the com-
pressor must restart after shutdown. Here the default value is 12°C(53.6°F). By difference between the shutdown tem-
perature and the restart temperature, the compressor is protected from frequent starting.
Operation mode and control mode of main menu are able to be changed in user setting. The operation mode can be
either hand or auto. When the operation mode is auto, the chiller runs according to programmed schedule. Contrary,
when the start mode is hand, the chiller runs according to key manipulation by operator or remote signal.
The control mode can be either local or remote. When the mode is local, the chiller runs according to key manipulation
by operator, Contrary, when the mode is changed to remote, a remote contact is substitute the key operation, and con-
sequently, the chiller can be operated remotely.
Through the time amending, the operator can change system clock. Because the clock is maintained even with power
loss, there is no need to set the clock again after power on.
Through the revision code, the operator can change password. Some functions of the HMI unit are protected by the
password.
Oil preheating time is also configurable in user setting in the unit of minute.
14 Chiller Air-cooled Screw