PowerWalker new VFI User Manual-EN
Contents
1. 3 Trouble shooting in else cases Problem Possible cause Action Battery discharging time diminishes Battery not yet been fully charged Keep UPS connected to utility power persistently for more than 10 hours to recharge the batteries UPS overloaded Check the loads and remove some non critical loads Battery aged Replace the batteries Charger failed Check the charger Contact the distributor or service center The UPS cannot power on after pressing the button The button is pressed too briefly Press the button continuously for more than 2 seconds Battery is not connected or battery voltage is too low or Charger failed Check the charger and battery UPS fault 30 Contact the distributor or service center 4 3 Battery Maintenance 1 The battery used for standard models are valve regulated sealed lead acid maintenance free battery It should be charged regularly in order to maximize the expected life of the battery When being connected to the utility power whether the UPS is turned on or not the UPS keeps charging the batteries and also offers the protective function of overcharging and over discharging The UPS should be charged once every 4 to 6 months if it has not been used for a long time In the regions of hot climates the battery should be charged discharged every 2 months The charging time should be gt 12 hours In normal2. 2 1 6 Communication port The communication port is for the monitoring software There are 2 options RS232 or USB There is only one option can work in the same time and same product 6 RS232 optional Pin assignment and description of DB 9 connector ene vermon TXD output RXD input GND USB optional The USB port is compliance with USB 1 1 protocol for its communication software 13 2 lukar Ee 2 1 Installation Safety Instructions You must read the following safety instructions before installation Installation Personnel This product must be installed only by qualified or professional personnel accord to safety instructions e Installation Environment A Do not install and operate the UPS when water condensation happen which may occur if the UPS is moved directly from a cold to a warm environment The UPS must be absolutely dry before being installed and operated Please allow an acclimatization time of at least 2 hours Otherwise there is hazard of electric shock A Do not install the UPS in the environment where it is damp or would be exposed to direct sunlight or near heat Ensure the UPS is far away from water inflammable gas and corrosive agents A Do not block air vents in the housing of UPS The UPS must be installed in a location with good ventilation Ensure enough space on each side for ventilation 14 Wiring amp Grounding A Installation and Wi
3. Factor 6A 10A 11A 15A oa D 176 276VAC full load 110 276VAC half load 46 54Hz 50Hz system 56 64Hz 60Hz system 20 98 full load Voltage 208 220 230 240VAC sine wave Synchronizing mains input line mode Frequency 50 60Hz 0 2 Hz battery mode THD 4 Linear load Voltage Regulation N Line mode 60s 100 130 1s gt 130 Overload Capacity Battery mode 10s 100 130 1s gt 130 Efficiency Line Mode Battery Mode Battery amp Charger 25 C Total battery rating voltage 24VDC Backup Time Half Load gt 9mi Recharge Time to 90 5Hours Hows Charging Current Max 4A D Discharging Current Max 4A Rated Charging Voltage 27 3Vdc 1 5 5 Standards Safety IEC EN 62040 1 1 EMI Conducted Emission EC EN 62040 2 Category C1 Radiated Emission JEC EN 62040 2 Category C1 Harmonic Current EC EN 61000 3 2 Input Currents16A Voltage Fluctuation and Flicker IEC EN 61000 3 3 Input Currents16A EMS ESD Sd tee eerie IEC EN 61000 4 2 Level 4 Level 3 ERT 8 in Aes An SANS IEC EN 61000 4 4 Level 4 SURGE aaa IEC EN 61000 4 5 Level 4 CS HANG ERS IEC EN 61000 4 6 Level 3 Power frequency Magnetic field IEC EN 61000 4 8 Level 3 Low Frequency Signals JEC EN 61000 2
4. conditions the battery life lasts 3 to 5 years If the battery is found in bad condition earlier replacement should be made Do not replace the battery individually All batteries should be replaced at the same time following the instructions of the supplier 4 4 Contact the service center If contact the service center for trouble shooting please provide the information as following 2 D N O oa A O 9 Model name of product Serial number of product The date when the problem found LED display status Buzzer alarm status Mains power condition Load type and capacity Environment temperature ventilation status The information battery capacity quantity of the external battery pack if the UPS is long back up model 10 Other information for complete description of the problem 31 SATransport and Storage 5 1 Please transport the UPS only in the original packaging 5 2 The UPS must be stored in the room where it is ventilated and dry 32
5. current is directly from the utility power If it is turned on constantly it shows Fault Warning that the UPS is in fault mode mode LED If it is flashing it shows that the UPS is in warning status e LED action summary LED No Bypass mode Line mode Battery mode Battery test mode Fault mode Warning o Lightened according to load level Lightened according to battery level 2 Depended on the fault warning status a Depended on the original display e Lightened constantly x Flashing 1 3 3 Button There is only one button for ON OFF Mute function on this product The controller can distinguish the command according to the operation time deference 1 Button action description Button actions are distinguished with short press and long press Please refer to the following tables for the detail Button action type Definition Short press Press the button more than 0 04s and less than 0 5s Long press Press the button more than 2s Invalid press Press the button more than 0 5s and less than 2s 2 UPS response to the button Original mode Button action UPS response Long press Turn on the UPS into battery mode Power off cold status The internal power supply is trigged for a Other press short time and then shutdown Long press Turn on the UPS into line mode Bypass mode yP Mute the buzzer if there is a w
6. fault mode the loads have the risk of power loss because the output will come from the bypass after UPS fault 4 1 3 Front panel 1 3 1 Front view Lene eer D PowerWalker z l D a ee 1K 1KS 2K 2KS 3K 3KS 1 3 2 LED display LED 6 MODE 7 LED 3 A oo E LED5 LED 2 we co o LED 4 LED 1 Q BUTTON ON OFF e LED definition There are total 6 LEDs to indicate the status of UPS Indicate the load level in line mode or bypass mode 1 3 Green Sar eve Indicate the battery level in battery mode If it is turned on constantly it shows 4 Green Inverter status that the load current is supplied LED from utility power or battery via the inverter If it is turned on constantly it shows that the UPS is in battery mode and the load current is from battery Ban Bypass Batter via the inverter y mode LED f it is flashing it shows that the UPS is in bypass mode and the load
7. happens Don t try to turn on the UPS again before find out the reason If the trouble can t be shoot please contact the distributor or service people In the emergency case please cut off the connection from mains external battery output immediately to avoid more risk or danger 24 3 13 Indication summary in normal Operatin Load Battery as Se beep g mode level level DE once ee NTEN Rte Ste SU RES mode eee pres RER ne on REC Bypass mode 50 75 E AD uen reno fefefe e Jeevemn ooo lom x fefe es ooo 2s so e e lee mogo Oro some fe loose mode 0 100 50 75 Every 4 sec ooo rece gt a am et CC TI mon ose e D seve NE a aa si mod CCE gt a test mode 0 100 50 75 Every 4 sec a ros gt aa some od DO DoD Bev e Lightened constantly ye Flash once every 4 seconds x Flash once every second a Depended on the original display Note In this case it indicates there is no output in bypass mode The causes may be that the mains input is out of range or the output is set to disable in bypass mode Check the mains input check the bypass output setting or turn on the UPS 25 4 EM ENT 4 1 Maintenance Safety Instructions You must read the following safety instructions before maintenance Maintenance Personnel This product must be maintained only by qualified professional personnel accord to safety i
8. terminal block on the rear panel of UPS to the earth point of battery pack Note Always connect the earth wire first Connect the Positive pole of external battery terminal block on the rear panel of UPS to the Positive polarity of battery pack Connect the Negative pole of external battery terminal block on the rear panel of UPS to the Negative polarity of battery pack Check the wiring and voltage of the battery pack Make sure the polarity and voltage is correct and the wires are fastened Install the terminal block cover on the rear panel of the UPS Connect the loads to the UPS through the outlet sockets Connect the input power cord of UPS to mains 2 5 Installation for communication software optional 1 Connect the communication cable between UPS and PC If the port is RS232 please lock the secure screw both on UPS and PC after connection If the port is USB it has Plug and Play function Please refer to the guide manual of software or contact the service center for installation and operation of management monitoring software 17 3 SEC 3 1 Operation Safety Instructions You must read the following safety instructions before operation Operation personnel Laymen can operate this product e Operation warning A Do not disconnect the earth conducting wire on the UPS or the building wiring terminals in any time since this would cancel the protective earth of the UPS system and
9. to line mode normally the Inverter LED will be on the Bypass Battery LED will be off The Load Battery level LEDs will be lightened according to the load capacity There is no beep of buzzer Note If the UPS is shutdown in battery mode automatically when the mains power returned to the input the UPS will start up and switch to line mode automatically 3 3 Start the UPS with battery DC source only This UPS can be started with DC source battery without AC source 1 2 If the UPS is a long back up time model with external battery banks please switch on the battery breaker first Press the button of the UPS front panel continuously for more than 2 seconds The buzzer will beep once and all the LEDs will be lightened and then black out one by one After a few seconds of self diagnoses 19 the UPS will be turned on to the battery mode and output the spec voltage After the UPS is turned on to battery mode normally both the Inverter LED and Bypass Battery LED will be on The Load Battery level LEDs will be lightened according to the battery capacity The buzzer will beep according to the battery level 3 4 Connect loads to UPS After the UPS is turned on you can switch on the loads 1 2 Itis recommended to switch on the load one by one The Load Battery level LED will indicate the load capacity in line mode If it is necessary to connect the inductance load such as a printer to the UPS the start up powe
10. CONTENT 1 Product Introduction 0n4s00nes0sanesaa naen anna nean anane 3 1 1 Functions description 3 12 Mode description 2 4440 ada aa da daa fat anni 4 1 8 Front panels sense nn A AAA net 5 1 4 Rear panels et nee ER Gan 9 1 5 Product specifiCatiOn rsa 11 1 6 Communication DON txt eet tre trs ht et pete 13 2 nstallaiOon aas aaa nanang aia ag gena ga genau gada nagane 14 2 1 Installation Safety Instructions aaa 14 2 2 Unpacking and Inspection 15 2 3 Installation steps for standard model 16 2 4 Installation steps for long back up time model 16 2 5 Installation for communication software optional 17 DS Operati M den aana kawa na die Na EN GB ENENG ae sant 18 3 1 Operation Safety Instructions 18 3 2 Start the UPS with mains AC source 19 3 3 Start the UPS with battery DC source only 19 3 4 Connect loads to UPS miam 20 3 5 Charge the batteries esa 21 3 6 Discharge the batteries aaa 21 3 7 Test the batteries 21 3 8 Turn off the UPS with mains AC source 22 3 9 Turn off the UPS with battery DC only 23 3 10 Mute th bUZZ6r nen ga nga a en a ai 23 3 11 Operation in warning status neran nn 23 3 12 Operation in fault Mode cisienn dled 24 3 13 Indication summary in normal operation 25 alee 4 MaintenanN CE asasaran a a nues 4 1 Maintenance Safety In
11. Output socket External battery terminal block 1 5 Product specification 1 5 1 Model description This manual is applicable to the following models Model PowerWalker PowerWalker PowerWalker PowerWalker PowerWalker PowerWalker name VFI 1K VFI 1KS VFI 2K VFI 2KS VFI 3K VFI 3KS pie 1000VA 700W 2000VA 1400W 3000VA 2100W Note The model names without S represent standard model with internal battery The model names with S represent long backup time model with external battery 1 5 2 Environment specification Modellname PowerWalker PowerWalker PowerWalker PowerWalker PowerWalker PowerWalker VFI 1K VFI 1KS VFI 2K VFI 2KS VFI 3K VFI 3KS Operating x Temperature Fo Storage 7 Temperature 0406 lt 1000m full load 2 l Altitude lt 2000m 90 load lt 3000m 80 load lt 4000m 70 load Relative Humidity Noise Level lt 45dB 1 meter from front panel 1 5 3 Mechanical Specification Modelhane PowerWalker PowerWalker PowerWalker PowerWalker PowerWalker PowerWalker VFI 1K VFI 1KS VFI 2K VFI 2KS VFI 3K VFI 3KS Dimension WxHxD 144x220x345 190x318x369 190x318x369 mm Weight 5 2 20 10 8 24 6 10 8 1 5 4 Electrical Specification Modelinam PowerWalker PowerWalker PowerWalker PowerWalker PowerWalker PowerWalker a VFI 1K VFI 1KS VFI 2K VFI 2KS VFI 3K VFI 3KS Power 1000VA 700W 2000VA 1400W 3000VA 21 00W Current Max Voltage Range Frequency Range Input Power
12. all connected loads A Do not try to disassemble the original part of the UPS before turn off and disconnect it from the mains power amp external battery A The UPS output socket may be electrically lived even if the UPS system is not connected to the mains power source Do not make any liquid and foreign objects enter the UPS A Turn off the mains input switch and external battery switch immediately at any accident of electric shock and fire related to the UPS 18 3 2 Start the UPS with mains AC source 1 If the UPS is a long back up time model with external battery banks please switch on the battery breaker first If the wiring is correct turn on the mains breaker in your building Then the power supply inside the UPS will be started automatically the fans will run and the panel will display with bypass mode Note 1 If the UPS have been set to enable the bypass output the output socket will have the voltage directly from mains after you turn on the input breaker Note 2 In bypass mode the load is not protected You should go on to the next step to turn on the UPS for protecting your load Press the button of the UPS front panel continuously for more than 2 seconds The buzzer will beep once and all the LEDs will be lightened and then black out one by one After a few seconds of self diagnoses the UPS will be turned on to the normal mode line mode and output the spec voltage After the UPS is turned on
13. arning or Short press alarming Long press Turn into bypass mode Line mode Short press Turn into battery test mode Long press Turn off the UPS Battery mode Short press Mute the buzzer Battery test Long press Turn into bypass mode mode Short press Turn into line mode Turn into bypass mode or shutdown Long press dependent on the fault type Fault mode Short press Change the beep status of buzzer 1 4 Rear panel 0 0 1KS 0 lt apo OC ig KAN a 5000 DDR ca NG Lg ng T BOB ne x 20000 lt jan EN a a anses 8 wan cies O0 Gi C59 gp gp e 3K 3KS Communication port USB or RS232 Mains input protection Mains input power cord
14. e all the loads are prepared or turned off for your operation before you shutdown the UPS system 3 10 Mute the buzzer 1 To mute the buzzer please short press the button If you short press it again after the buzzer muted the beep will be returned It is not anytime the buzzer can be muted If it is in warning battery low overload the buzzer can t be muted unless the trouble is solved If it is in fault mode short press the button could transfer the continuous beep to once every second 3 11 Operation in warning status 1 In case the Fault Warning LED is flashing and the buzzer is beeping once every second it shows that the UPS system have some troubles please check the troubleshooting table in chapter 4 to find out what happen to the UPS If the warning happens the UPS will continue work in the original mode the operation will not be interrupted If the error is corrected the warning alarm will stop 23 3 12 Operation in fault mode 1 In case the Fault Warning LED is lightened constantly and the buzzer beep continuously it shows that there is must a fatal error happen to the UPS and it is operating in abnormal mode If fault happens please notes and record what the display shows the display information is very important for the trouble shooing Please refer to the troubleshooting table in chapter 4 for detail Please check your loads wiring ventilation mains battery and so on after the fault
15. ible cause Action Output short circuit Remove all the loads Turn off the UPS Check whether the output of UPS and loads is short circuit Make sure the short circuit is removed and the UPS has no internal faults before turning on again Internal fault inverter failed Contaci the distributor or service center Internal fault inverter relay short Contact the distributor or service center Overload Check the loads and remove some non critical loads Check whether some loads are failed Internal over temperature Check whether the UPS is overloaded the air vents are blocked and the ambient temperature is over 40 C If the overload or block is removed please make the UPS cool down for 10 minutes before turning on again Itis not recommended the UPS is operated at the ambient temperature of over 40 C Internal fault bus voltage fault Contact the distributor or service center e Lightened constantly Other internal fault 29 Contact the distributor or service center Note 1 when the UPS failed the red Fault Warning LED will be lightened constantly and the buzzer will beep continuously Note 2 When the UPS is fault it will stop the power conversion of mains or battery the original Load Battery level LED will code the fault cause Note 3 If the fault can t be shoot please contact the distributor or service center
16. ies Effluent electrolyte can cause injury to the skin and eyes It may be toxic Fuse AN Please replace the fuse only by a fuse of the same type and of the same amperage in order to avoid fire hazards 27 4 2 Typical Trouble Shooting 1 Trouble shooting according to warning indication Possible cause Action Fan abnormal or internal temperature is too high Check the fans Check the loads Check the ventilation ambient temperature I P fuse open Check the I P fuse and related power component Battery low abnormally or battery not connected line mode or battery discharged over 14 hours Check the battery If the UPS is a long back up model check whether the external battery protection breaker of fuse is open If the battery is damaged or aged replace the battery o Depended on the original display x Flash every second Battery over voltage or charger failed Check the charger output battery input x Flash every 4 seconds Note 1 when the UPS warning the red Fault Warning LED will flash and the buzzer will beep once every second Note 2 When the UPS warning the UPS is still working on the original mode with the original display except the inverter LED maybe flash Note 3 If the warning can t be shoot please contact the distributor or service center 28 2 Trouble shooting according to fault indication Poss
17. nstructions Risk of electric shock A No matter the UPS is connected to the utility power or not the output may have electricity The parts battery capacitor inside the unit may still have hazardous voltage after turning off the UPS A Make sure to disconnect the batteries before carrying out any kind of maintenance or repair In this product the battery is dangerous A Verify that no voltage between the battery terminals and the ground is present before maintenance or repair In this product the battery circuit is not isolated from the input voltage Hazardous voltages may occur between the battery terminals and the ground AN very that no hazardous voltage exists in the energy storage capacitor before maintenance or repair 26 AN Remove all jewellery wristwatches rings and other metal personal goods before maintenance or repair A Only use tools with insulated grips and handles when maintaining or repairing e Battery Only qualified personnel can replace the batteries A Do not short the positive and negative of the battery electrode Batteries have a high short circuit current and may cause a risk of serious shock or fire AN When changing batteries replace with the same quantity and the same type of batteries A Do not attempt to dispose of batteries by burning them It could cause explosion The batteries must be rightly deposed according to local regulation A Do not open or destroy batter
18. onds After you press the button the buzzer will beep once All the LEDs will be lightened and then black out one by one Then the panel will display the bypass mode Note 1 If the UPS have been set to enable the bypass output the output socket will have voltage from mains directly after you turn off the UPS inverter to bypass mode Note 2 Because there is risk of power loss for the loads if you turn off the UPS to bypass mode please make sure the loads are prepared for your operation If you want to turn off the output of UPS and shut down the UPS completely you have to cut off the mains input of UPS Note please make sure all the loads are prepared or turned off for your operation before you shutdown the UPS system After you cut off the mains input of UPS to shut down all the LEDs will be lightened and then black out one by one Finally all the LEDs will be lightened to indicate the UPS is saving data to the memory After the saving process the UPS will be shutdown completely 29 3 9 Turn offthe UPS with battery DC only 1 To turn off the UPS in battery mode please press the button continuously for more than 2 seconds After you press the button the buzzer will beep once All the LEDs will be lightened and then black out one by one Finally all the LEDs will be lightened to indicate the UPS is saving data to the memory After the saving process the UPS will be shutdown completely Note please make sur
19. r should be considered for calculating the capacity of the UPS because the power consumption is too big when this kind of load is started If the UPS is overloaded all the load level indication LEDs will flash and the buzzer will beep twice every second for alarming If the UPS is overloaded some loads must be switched off or decreased immediately It is recommend that the total loads connected to the UPS had better be less than 80 of its nominal power capacity to prevent the overload happen at the transient time and it will make your system more safe If the overload time is over spec in line mode the UPS will transfer to bypass after the overload disappears it will return to line mode If the overload time is over spec in battery mode the UPS will cut off the output and then shutdown according battery level 20 3 5 Charge the batteries 1 After the UPS is connected to normal mains the charger will work and charge the batteries automatically in bypass mode or line mode Suggest charging the batteries for 10 hours before use Otherwise the backup time may be less than the standard value 3 6 Discharge the batteries 1 3 When the UPS is in battery mode the buzzer will beep according to different battery level If the battery voltage drops to the alarming level the buzzer will beep hurry once every sec to remind the user that the battery is low level and the UPS will be shutdown automatically soon The user co
20. ring must be performed in accordance with the local electrical laws and regulations The UPS must be securely grounded If there are external UPS battery cabinets please make sure the battery cabinets have the equipotential earth bonding to the UPS main cabinet A An appropriate switch device as backup protection for over current or short circuit should be provided in the input utility e Battery A Strictly follow the principle of same voltage same type when paralleling multi battery packs A DC breaker or fuse must be used as a protection device between the external battery pack and the UPS The spec of protection must be matched to the UPS specification 2 2 Unpacking and Inspection 2 2 1 Unpack the package and check the contents The shipped package contains 1 UPS 1 user manual 2 2 2 Inspect the appearance of the UPS to see if there is any damage during transportation Do not turn on the unit and notify the dealer immediately if there is any damage or lack of some parts 15 2 3 Installation steps for standard model 1 Make sure the wire circuit breaker socket are enough for the current rating of UPS to avoid the hazards of electric shock and fire Make sure the mains switch in the building is cut off Make sure the UPS is not be turned on before wiring operation Turn off all load switches first before connecting the load to the UPS Make sure the protective earth ground is correct Connec
21. structions 26 4 2 Typical Trouble Shooting maaa 28 4 3 Battery Maintenance aneka anakan 31 4 4 Contact the service center 31 5 Transport and Storage seen en ena naaa naaa 32 1 Mere Introduction 1 1 Functions description Bypass L UPS output Mains input Battery This product is a true online double conversion UPS Uninterruptible Power Supply It provides perfect protection for critical load such as computer system It can eliminate almost all mains power disturbances The input AC current can be corrected to a wave following the mains voltage so it is a high power factor system Through the PWM control technology the output voltage can be a pure amp stable sine wave AC voltage When the mains input become abnormal the controller will stop the AC DC and start the DC DC section immediately to make sure the DC AC inverter section can continue to work After the mains input comeback to normal range the DC DC will be stopped and the AC DC works again So the load is always power supplied through inverter without any interrupt if the UPS is turned on The UPS also provides an internal bypass way to make the load can be powered by mains input directly when the UPS is off or failed The UPS have an internal charger for batteries the charger will charge the batteries when the mains is in a reasonable range on bypass mode or line mode 1 2 Mode descrip
22. t the loads to the UPS through the outlet sockets Connect the input power cord of UPS to mains 2 4 Installation steps for long back up time model 1 Make sure the wire circuit breaker socket are enough for the power rating of UPS to avoid the hazards of electric shock and fire Make sure the mains switch in the building is cut off Turn off all load switches first before connecting the load to the UPS Make sure the protective earth ground is correct Install the external battery as following a Warning Make sure the mains input have been cut off b Switch off the battery breaker if there is a battery breaker c Remove the cover of external battery terminal of UPS d Warning Pay highly attention to the rating battery voltage marked on the rear panel the connection with wrong battery voltage may cause permanent damage of the UPS e Warning Pay highly attention to the polarity marking on external battery terminal block and make sure the correct battery polarity is connected Wrong connection may cause permanent damage of the UPS 16 6 7 k Prepare the external battery cable that should be able to carry the current of 50A the cross section area should be greater than 5 26 mm It is recommended to use 8 AWG wire or thicker for safety and efficiency And battery wire color is recommended as following GND Red wire Yellow Green wire Black wire Connect the GND pole of external battery
23. tion e Bypass mode Bypass mode means that the UPS provides the power through the internal bypass way to load directly without any regulation If the controller detects the mains is abnormal it will shut off the output to protect the load The bypass voltage frequency range and default output status on off could be set by communication software Line mode Line mode means that the mains input is rectified converted by the AC DC section and then inverted to stable output by DC AC section In line mode the output is clean and good to the loads If the mains get abnormal the UPS will transfer to battery mode without interrupt e Battery mode Battery mode means that the battery power goes through the DC DC section to the inverter DC AC and get a stable backup output when the mains input is not usable If the mains input recovered the UPS will transfer to line mode without interrupt Battery test mode In this mode the UPS will stop the AC DC section and discharge the battery while mains input is normal If the controller found the battery is error it will transfer back to line mode immediately and warning by display to see whether the battery needs to be replaced The battery test mode could be trigged in line mode by pressing the button or by the communication command Fault mode If the UPS generates some internal failure and have to stop its inverter it will go into fault mode and alarm by display and buzzer In
24. uld switch off some non critical loads to avoid the shutdown alarming and prolong the backup time If have no more load to be switched off at that time you have to shutdown all loads as soon as possible to protect the loads or save data Otherwise there is the risk of data loss or load failure In battery mode if the user don t like the buzzer noise the beep could be muted by short press the button The backup time of the long backup time model is dependent on the external battery capacity except the load capacity mainly 4 The backup time may vary from different environment temperature and load type 3 7 Test the batteries 1 2 If you need to check the battery level or aging status when the UPS is running on normal mode line mode you could short press the button to let the UPS transfer to battery test mode To make the system more reliable the UPS will perform the battery test 21 automatically periodically The default period is once per week The battery test could be performed by the command from monitoring software through the communication port If the UPS enter the battery test mode the display and buzzer indication will be same as the battery mode except that the Bypass Battery LED is flashing So you can check the battery level at this mode 3 8 Turn off the UPS with mains AC source 1 2 Firstly turn off the UPS inverter to bypass mode please press the button continuously for more than 2 sec
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