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IMPORTANT SAFETY INSTRUCTIONS 

 

WARNING:  Do not attempt to service this product yourself except to 
replace the battery.  Opening or removing the cover may expose you 

to dangerous voltages, even when the AC cord is disconnected from 

the electrical outlet.  Refer all servicing to qualified service personnel. 

 
1. SAVE THESE INSTRUCTIONS. ADHERE TO ALL OPERATING 

INSTRUCTIONS AND WARNINGS ON THE UNIT AND IN THIS MANUAL. 

 
2. This equipment is designed for Commercial/Industrial use only. Liebert 

Corporation neither recommends nor knowingly sells this product for 
use in critical life support applications. 

 
3. Read all safety and operating instructions before operating UPS. Operate 

the UPS indoors only. Protect it from moisture and install it in a clean 
environment, free from flammable liquids, gases, or corrosive substances.  

 
4. WARNING: Operate the UPS only from an earthed outlet (2-wire plus earth), 

230 VAC, 50 Hz supply. UPS must be earthed at all times while in use. Turn 
UPS OFF before unplugging it, or the safety earth to the equipment will be 
removed. 

 
5. CAUTION: Output receptacles on the UPS are electrically live if the UPS is 

ON, even if the UPS is not plugged in. The on/off button on the UPS does 
not electrically isolate the internal parts. To isolate the UPS, switch OFF the 
UPS first, then unplug it. 

 
6. CAUTION: Earth leakage current must not exceed 2.75 milli-amperes. Most 

data processing equipment meets this requirement if you use no more than 
4 pieces of equipment. Note: These instructions may be modified by local 
wiring regulations.  

 
7. Unplug the UPS and turn it OFF before cleaning. Use only water dampened 

cloth, never liquid or aerosol cleaners. 

 
8. Operate the UPS only from an earthed outlet (2 wire plus earth) 230 VAC, 

50 Hz. Use an H05V power supply cord with 2-pin plus earth plug for UPS 
AC input. If unable to fully insert plug into outlet, contact an electrician for 
replacement. 

 
9. Route power supply cords so they are not walked on or pinched.  
 
10. Never block or insert any object into ventilation holes or other openings. 

Maintain a minimum clearance of 100 mm all around the UPS for proper air 
flow and cooling. 

Summary of Contents for PowerSure PS250-50S, PS400-50S

Page 1: ...PowerSure POWER PROTECTION Uninterruptible Power System 250 VA 600 VA 230 VAC USER S MANUAL R PS250 50S 250 VA PS400 50S 400 VA PS600 50S 600 VA ...

Page 2: ...urn UPS OFF before unplugging it or the safety earth to the equipment will be removed 5 CAUTION Output receptacles on the UPS are electrically live if the UPS is ON even if the UPS is not plugged in The on off button on the UPS does not electrically isolate the internal parts To isolate the UPS switch OFF the UPS first then unplug it 6 CAUTION Earth leakage current must not exceed 2 75 milli amper...

Page 3: ...ear faulty or damaged contact your dealer immediately Store packaging in a safe place for possible future shipment of UPS 2 Place UPS on a sturdy dry surface in a well ventilated area away from direct heat sources Leave at least 100 mm clearance all around UPS for adequate ventilation 3 Shut down load equipment turn OFF mains supply and unplug load equipment s power input cable A from AC supply so...

Page 4: ... switch es 4 Check the condition of the UPS front panel LED s The 250 VA AC LED 4 should be lit For the 400 600 VA models the AC LED 4 should be lit and the Check and Battery LED s 3 2 should be unlit 5 Check the operation of your equipment It should display normal operational conditions 6 If any function provides an abnormal condition refer to the troubleshooting guide later in this manual If a p...

Page 5: ...r the UPS will ignore the new settings Replace the plastic option switch cover Option Switch 1 50 60 Hz Select When OFF this switch sets UPS for 60 Hz mains Output in backup mode will be 60 Hz When ON the switch sets UPS for 50 Hz mains and output in backup mode is 50 Hz The switch must match the mains frequency or the UPS will not start The factory setting is 50 Hz Option Switch 2 High Line Trans...

Page 6: ...the unit is not in continued use plug in the UPS every 4 to 6 months for 12 hours to recharge the battery Warranty is void if the battery discharges below the minimum battery cutoff point To prevent such discharge DO NOT leave UPS ON for more than two days without plugging it in BATTERY LIFE REPLACEMENT Excessive battery use storage at high ambient temperatures and lengthy periods in a discharged ...

Page 7: ...end To reset the circuit breaker simply push the bar back in If the circuit breaker activates often ask your dealer to check the UPS sizing or call Tech Support at the number listed at the end of this manual ALARM CONDITIONS The 400 VA and 600 VA models sound alarms and flash visual indications at the front panel LED s 2 3 4 whenever they sense a power failure low battery voltage while on battery ...

Page 8: ... supply Mains voltage must be less than 270 VAC UPS starts on battery but will not switch to mains power 400 600 VA only UPS not plugged in Circuit breaker activated Power not available at utility receptacle Plug in power cord securely Reset circuit breaker see Resetting Circuit Breaker and restart UPS Call a qualified electrician UPS shuts down Overload Short Circuit Low Battery Sitenet 1 Shutdow...

Page 9: ...arm Status NORMAL START UP On Flash Once then Off Off Single Beep and then Off Operate Start Up Test Fail Off Off On Continuous for 15 Sec and then Off Will Not Start Input Frequency Mismatch with Option Switch Setting Overload Short Circuit Off On for 15 Sec and then Off Flash Continuous for 15 Sec and then Off Will Not Start Input Voltage Below Threshold Off Off Flash Continuous for 15 Sec and t...

Page 10: ...ry Stepped Sine Wave Max Output Current at 230 V 1 1 A 1 7A 2 6A Output Frequency 50 or 60 Hz 5 Max Overload Capacity 115 of Power Rating Battery Type Valve Regulated Lead Acid Qty x Voltage x Rating 1 x 12 V x 4 5 AH 1 x 12 V x 7 AH 2 x 12 V x 7 AH Back up Time 6 minutes at full load Time from Low Battery Alarm to Shutdown Approximately 2 Minutes depending on load Recharge Time 8 10 Hours to 90 C...

Page 11: ...unauthorized modification alteration or repair use beyond rated capacity or improper installation maintenance application or use including without limitation use in a manner contrary to the accompanying instructions or applicable codes WARNING Warranty is void if the battery is allowed to discharge below the minimum battery cutoff point To prevent such discharge DO NOT leave the unit power switch ...

Page 12: ...recaution has been taken to ensure accuracy and completeness in this manual Liebert Corporation assumes no responsibility and disclaims all liability for damages resulting from use of this information or for any errors or omissions 1997 Liebert Corporation All rights reserved throughout the world Specifications subject to change without notice Liebert and the Liebert logo are registered trademarks...

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