User's Manual

Mobile WiMAX Outdoor RAS SPI-2210 System Description/Ed.05

3.2.4 Direct Air Cooling System (DACS)

The DACS consists of the membrane filter and HDM, etc, and it controls the temperature

of the system according to the control of the UCM.

DACS Configuration

The DACS is configured as follows:

Figure 3.6 DACS Configuration

Board Name Quantity Function

FAN-POD 1 Fan module-Premium Outdoor DMB

DMB cooling fan

FAN-POR 3 Fan module-Premium Outdoor RFB

RFB cooling fan

HDM-R 1 Heater and Damper Module-RFB

- HDM-R raise the temperature inside the system. (Heater: 2EA)

- Open/close the exhauster of cabinet in the back of RFB

FAN-POR FAN-POR FAN-POR

HDM-R

HDM-D

FAN-POD

Membrane

Filter

Membrane

Filter