User manual

Maintaining the LightStream 1010 ATM Switch 4-17
Removing and Installing DC Power Supplies
Connecting DC Power
Warning Before performing any of the following procedures, ensure that power is
removed from the DC circuit. To ensure that all power is OFF, locate the circuit breaker on
the panel board that services the DC circuit, switch the circuit breaker to the OFF position,
and tape the switch handle of the circuit breaker in the OFF position.
Follow these steps to connect the DC power supply to the DC voltage source:
Step 1 Verify that power is off to the DC-input circuit.
Step 2 Ensure that the power switch is OFF (0) on the power supply. (See Figure 4-12.)
Figure 4-12 Power Switch and Terminal Block Connections
Step 3 Remove the terminal block cover by depressing the two plastic levers on each
side of the terminal block.
Step 4 Attach the appropriate lugs to the DC-input wires.
Step 5 From the top of the terminal block, wire the DC-input power supply to the
terminal block as follows. (See Figure 4-12.)
Caution Connect the ground wire first.
INPUT
48/60
14.0/8.0 A
H9793
Power
switch
LED
Terminal block