LG RCWW-1 Operation & Maintenance Manual page 59

At the bottom right of the power panel, the voltage monitoring relay is to check whether the power is
appropriately installed. There are 3 fuses installed for the Rated electrical input power input to the
voltage monitoring relay. The ventilation fan of the power panel controls the thermostat. When the
internal temperature of the power panel is 35° or above, the ventilation fan will operate.
u
Compressor OCR (Over-Current Relay)
Compressor OCR is heat type and is used for preventing the compressor from overheating.
OCR contact part used for control system is closed when normal and OCR contact switch is
open when over-current is detected.
For OCR, the switch on OCR must manually be initialized to recover normally. Tripping point
scope and initial setting is are shown below.
At the bottom right of the power panel, the voltage monitoring relay is to check whether the power is
appropriately installed. There are 3 fuses installed for the Rated electrical input power input to the
voltage monitoring relay. The ventilation fan of the power panel controls the thermostat. When the
internal temperature of the power panel is 35° or above, the ventilation fan will operate.
u
Voltage Monitoring Relay (5E)
Voltage monitoring relay is used for checking the appropriate power of Rated electrical input.
Voltage monitoring relay is show below. Existing 3 phase voltage is displayed in order of every
3 seconds.
Model
RCWW200RAAA
Range [A] Trip[A]
120~150
Table 20
R
S
T
R
S
T
R
S
T
Fig. 34
- 59 -
140
V
S
V
S
V
S
Operation & Maintenance Manual