Replacing the Battery, Troubleshooting | Emerson 120V, 500VA, 350VA

REPLACING THE BATTERY

Servicing of batteries should be performed or supervised by personnel knowledgeable about batteries and required precautions. When replacing batteries, replace with the same type and size battery.

! CAUTION

Do not dispose of batteries in a fire. The batteries may explode.

! CAUTION

Do not open or mutilate batteries. Released electrolyte is harmful to the skin and eyes. It is toxic. This product is designed for 120V equipment.

To replace the battery:		Step 1
1.	Turn off all connected loads, then turn off the UPS and unplug the input	Step 1
1.
	power cord. (Batteries are NOT hot-swappable.)
2.	Carefully lay the UPS on its left side, as shown in the diagram.
3.	Use a #1 Phillips head screwdriver to remove the four screws from the
	right-side cover, then pull up the right-side cover and remove it.
4.	Remove the black wire from the negative (-) terminal and the red wire from
	the positive (+) terminal.
5.	Gently remove the battery from the UPS.
	Attention: Risk of Electric Shock.
6.	Verify that the replacement battery matches the dimensions and battery
	specification.	Steps 2 and 3
7.	Connect the battery leads to the new battery. Be sure to reconnect the red	Steps 2 and 3
7.

wire to the positive (+) terminal and the black wire to the negative (-) terminal.

Note: Small sparks may occur at the battery connectors during reconnection. Take care not to short-circuit the positive and negative battery terminals while replacing the battery.

8.Place the battery in the UPS.

9.Ensure correct alignment of front panel, then reattach the right-side cover. Evenly tighten the four screws from Step 3. (Do NOT over tighten screws)

Dispose of the old battery properly at an appropriate recycling facility.

ATTENTION:

Risk of

Electric Shock

TROUBLESHOOTING

If the UPS detects a fault, consult the table below for possible causes and solutions. For further assistance, please contact your local Emerson Network Power representative.

Fault	Possible Causes	Solutions
	The UPS may not be turned on.	• Press the On/Off button to turn on the UPS.
Utility power is normal, but LED 1 is not illuminated.	The power cord may not be connected properly.	• Connect the power cord securely into a wall outlet.
	The upstream input circuit breaker may be tripped.	• Reset the input circuit breaker.
LED 1 flashes (green) every 3 seconds, but there is	Battery voltage may be too low.	• Recharge the UPS for 8 hours.
no output power.	Battery voltage may be too low.	• Recharge the UPS for 8 hours.
no output power.
Alarm buzzer beeps continuously although utility	The UPS may be overloaded (check LED 2).	• Disconnect some equipment from the UPS.
power is normal.	The UPS may be overloaded (check LED 2).	• Disconnect some equipment from the UPS.
power is normal.
UPS does not provide expected backup time.	The UPS battery reached end of life.	• Replace the internal battery.
The UPS is on and connected to input power, but fails	Utility power may be outside the unit’s operating range.	• If utility power is normal, try reconnecting input
to operate properly.	Utility power may be outside the unit’s operating range.	power and restarting the UPS.
to operate properly.		power and restarting the UPS.

SPECIFICATIONS

Model Number	PSP350MT3-120U		PSP500MT3-120U
Capacity (VA/W)	350/210		500/300
Net Weight, lb. (kg)	6.4 (2.9)		8.8 (4.0)
Shipping Weight, lb. (kg)	7.7 (3.5)		10.1 (4.6)
Dimensions - W x D x H, in. (mm)	3.4 x 8.5 x 9.9 (87 x 215 x 251)
Input Voltage		84-140VAC
Frequency		50/60Hz ±5Hz
Output Voltage (Utility Power Normal)	Typical 84-140VAC
Output Voltage (Battery Operation)		120VAC ±5%
On-Battery Wave Form	Stepped sinewave
VRLA Battery Type - VDC x Ah x Quantity	12V x 5Ah x 1		12V x 7.2Ah x 1
Typical Recharge Time	6-8 hours to 90%
Battery Run Time* - Full Load		3-5 minutes
Battery Run Time* - Half Load		10 minutes
Audible and Visual	Audible alarm / LED
Backup Outlets	NEMA 5-15R (3)
Surge Outlets	NEMA 5-15R (1)
Operating Temperature, °F (°C)	32 to 104 (0 to 40)
Storage Temperature, °F (°C)	5 to 104 (-15 to 40)
Operating / Storage Relative Humidity	0%-90%, non-condensing
EMI Classification	FCC Part 15 Class B
Agency**
Safety	UL 1778, c-UL Listed
	FCC Part 15 Class B
	IEC 61000-4-2 Electrostatic discharge
	IEC 61000-4-3 Radiated E-RFI fields
EMC	IEC 61000-4-4 Fast E transients
	IEC 61000-4-5 Surges/Lightning
	IEC 61000-4-6 Conducted RFI
	ANSI C62.41 Category A Level 3 (surges)
Transportation	ISTA Procedure 1A Certification

*Battery run time may vary depending on load.

**The Liebert PSP is compliant with the Restriction of Hazardous Substances Directive (ROHS), prohibiting use of six hazardous materials manufacturing of electronics, including lead-free solder.

® Liebert is a registered trademark of Liebert Corporation.

All names referred to are trademarks or registered trademarks of their respective owners.

SL-23285_REV0_03-09

Technical Support / Service	United States
800-222-5877 (Outside U.S. 614-841-6755)	1050 Dearborn Drive
upstech@emersonnetworkpower.com	P.O. Box 29186
Web site: www.liebert.com	Columbus, OH 43229

350VA, 500VA, 120V specifications

The Emerson 500VA and 350VA uninterruptible power supplies (UPS) designed for 120V applications are engineered to ensure reliability and protection for critical electronic devices. These compact and robust UPS systems are particularly suitable for home offices, small businesses, and other environments where maintaining power continuity is essential.

One of the standout features of the Emerson UPS models is their ability to provide line-interactive technology. This technology enhances voltage regulation by adjusting the output voltage without switching to battery. This leads to improved efficiency and extended battery life, making these units an excellent choice for environments with frequent voltage fluctuations.

Both the 500VA and 350VA units come equipped with multiple outlets, allowing users to connect several devices simultaneously. The inclusion of surge protection further safeguards connected equipment from harmful electrical spikes, a common risk in everyday power supply cases. This comprehensive protection ensures that devices such as computers, routers, and telecommunication equipment remain operational during unexpected power outages.

Another important characteristic of the Emerson UPS systems is their LCD display, which provides real-time information on battery status, load levels, and estimated runtimes. This feature allows users to monitor the UPS performance easily and take proactive measures when power conditions change.

The Emerson UPS systems also incorporate advanced battery management technology that optimizes charging cycles and prolongs battery lifespan. This capability minimizes the need for frequent replacements and enhances the overall reliability of the power supply.

With a compact design, the Emerson 500VA and 350VA models can be easily integrated into any workspace without occupying a large footprint. The lightweight construction allows for easy installation and portability, making it suitable for users who might need to relocate their equipment frequently.

In summary, the Emerson 500VA and 350VA UPS systems for 120V applications provide a powerful solution for uninterrupted power supply. With features such as line-interactive technology, multiple outlets with surge protection, an LCD display for monitoring, and advanced battery management, these UPS units offer both reliability and efficiency. Whether protecting critical data or ensuring workflow continuity, the Emerson UPS systems are a valuable addition to any power-sensitive environment.