Emerson Liebert PSP User's Manual

Emerson Power Supply User's Manual - Liebert PSP.
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Liebert® PSP™

Quick-Start Guide - 350VA/500VA, 120V

IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important instructions that should be followed during installation and 
maintenance of the UPS.
• Intended for installation in a controlled environment.
• Maximum ambient temperature 104°F (40°C).

• Do not connect equipment that may overload the UPS or demand half-wave 

rectification, such as a laser printer.

• Connect the UPS only to an earthed / grounded outlet that meets national and local 

electrical safety guidelines.

• Locate the UPS near a wall outlet. Do not use an extension cord between the UPS and 

the outlet.

• The Liebert PSP has been designed for small office/home office use only; it is NOT 

recommended for use in life-support applications.

• In the event of an emergency, press the On/Off button and disconnect the power cord 

from the AC power supply to properly disable the UPS.

• Do not attach power strips or surge suppressors to the UPS.
• Do not attempt to service any parts inside the UPS except when replacing the batteries. 

Failure to adhere to this could cause personal injury or equipment malfunction and void 
the warranty.

• For technical support:

• Visit www.liebert.com or 
• Send an e-mail to upstech@emersonnetworkpower.com.

SETUP

UPS CONTROLS AND CONNECTIONS

! CAUTION

To reduce the risk of fire, connect only to a circuit provided with 20 amperes 
maximum branch circuit overcurrent protection in accordance with the national 
code, ANSI/NFPA 70.

Step 1 Inspect the Package
Inspect the package and the UPS upon receipt. 
Notify the carrier and dealer of visible damage.

The package includes:

• Liebert PSP
• USB cable
• Quick-start guide

The Liebert MultiLink™ software may be 
downloaded from the Liebert Web site at:

multilink.liebert.com 

See Step 8 for installation instructions.

Step 2 Decide Where to Place the UPS
The UPS must be placed indoors, protected from water, direct 
sunlight and excessive heat.

Provide at least 4" (100mm) of clearance on all sides of the unit 
for proper ventilation.

Step 3 Charge the UPS Battery Before Use
The UPS battery is not charged before shipping. It MUST be charged before use.

• Connect the UPS power cord to a wall outlet and charge for at least eight hours. Unit 

can be charged in the on or off state.

Note: If battery is placed in storage, charge the battery every six months if kept at
5°F to 85°F (-15°C to 29°C)—or every three months if kept at 86°F (30°C) or higher.

Step 4 Start the UPS
After the battery is fully charged:

• Turn on the UPS by pressing the On/Off button (see Figure 1 below). 

LED 1 should be illuminated (green), indicating the UPS is operating in Normal Mode.

Step 5 Check the Site Wiring Fault Indicator
• Check the rear of the UPS to make sure the Site Wiring Fault indicator is 

NOT illuminated.

Caution: If the Site Wiring Fault indicator is illuminated, have a qualified 
electrician check the wall receptacle wiring and fix any problems.

Step 6 Connect the Loads
The UPS has three battery backup outlets that 
provide power when the UPS operates on bat-
tery. There is also one surge-only outlet (see 
Figure 2 below).
• Plug the loads into the battery backup outlets 

on the rear of the UPS.

Caution: Do not connect a laser printer to the 
UPS.

Step 7 Connect the Network Surge Protection
The UPS has two network cable jacks for network lines 
(see Figure 2 below).
• Connect a single-line network cable into the network 

surge protection IN jack on the rear of the UPS.

• Connect a network cable from the OUT jack on the rear 

of the UPS to a port on a PC or network device such as 
a router.

Step 8 Set Up Liebert MultiLink software
To start using the Liebert MultiLink software:
• Install the software. 

See the Liebert MultiLink quick-start guide or user manual for 
installation instructions.

• Connect one end of the USB cable (supplied) to the USB port on 

the rear of the UPS. Connect the other end to a USB port on the 
computer. 
See the Liebert MultiLink user manual for operating instructions.

Note: Emerson recommends connecting the USB cable directly to 
the computer WITHOUT using a USB hub.

UPS

USB 

cable

Quick-start 

guide

!

EMERSON

Network Power

Liebert

®

PSP

AC Power System

UPS Status, Alarm Conditions and Alerts

Condition

LED

Color

Solid/Flashing

Audible Alarm

Normal Mode

LED 1

Green

Solid (steady glow)

(None)

Battery Mode

LED 1

Green

Flashes every 3 seconds

Every 3 seconds

Battery Low

LED 1

Green

Flashes every 1 second till end of discharge (EOD)

Every 1 second

Overload

LED 2

Amber

Solid (steady glow) until load drops or breaker trips

Continuous

Battery Replacement

LED 2

Red

Flashes every 1 second for 5 seconds only

Every 1 second for 5 seconds only

Fault

LED 2

Red

Solid (steady glow) until UPS shuts down after 5 seconds

Continuous until UPS shuts down

LED 2 (red = fault; 

amber = overload)

Fault

symbol

Overload 

symbol

Utility

symbol

On/Off button

LED 1

(green)

Battery backup 

outlets (3)

NEMA 5-15R

RJ-45 jacks (2) 

Network 

protection

USB

interface

Surge outlet (1)

NEMA 5-15R

Resettable 

circuit 

protector

Site Wiring 

Fault indicator

Figure 2 - Rear Panel

Figure 1 - Front Panel LEDs

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