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A warning circuit monitors the operational condition of the fans. In case of a fan fail-
ure, a buzzer will sound and the red LED indicating "TEMP. FAULT" will light up.
The unit should be switched off immediately and the defective fan should be re-
placed. NEVER LOAD THE UNIT WHEN THERE IS AN AUDIBLE ALARM AND
THE TEMP. FAULT LED IS ILLUMINATED.
FRONT PANEL CONTROLS AND INDICATORS
The following controls and indicators are provided on the front panel :
1. POWER ON/OFF SWITCH / BREAKER. The rocker switch will illuminate when
switched on. A 20A circuit breaker is built in to provide protection on the input side
against overload
2. VOLTMETER / AMMETER. A combined voltmeter and ammeter are provided.
The function can be switched by the volt / amp switch
3. METER CHANGE-OVER SWITCH. Switches the combined meter between am-
meter and voltmeter
4. L.E.D " PSM STATUS (1 to5)". During normal operation, the green LED of each
Power Supply Module (PSM) will light. In case a power supply module (PSM) fails, its
corresponding LED will go off. LED 1 is for the left most module (near the on/off
switch)
5.
L.E.D " TEMP. FAULT " : In case of fan failure, this red LED lights up and a
buzzer is sounded.
1.
REAR PANEL CONNECTORS
The following output connectors have been provided.
1.
Load+ (Positive), Load- (Negative) LOAD CONNECTORS.
For connecting to the D.C. Load
2.
Battery+ (Positive), Battery- (Negative) BATTERY CONNECTORS.
For connecting external battery for un-interrupted D.C. power to the load.
5.
2.
4.
3.
4.
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