7.4 Batteries7.4.1 GeneralThe service life of the battery is from 3 to 6 years, depending on the operating temperature and on thenumber of discharge cycles.As a healthy battery is critical to the performance of the UPS, an automatic quick battery test is performedregularly to ensure failsafe operation (see section 4.6). When the condition of the battery is critical, a 'replacebattery' alarm will be activated (see 4.4.8). Replace the batteries as soon as possible, proceed with section7.4.2.NOTEunder certain circumstances a manual battery test can result in a false alarm: please see 4.6'quick battery test'7.4.2 Battery replacementPlease refer to figure 7.4.2. It shows a VH Series 3000VA model. The battery (tray) configuration of othermodels may differ, but the basic principle is the same for all VH Series models.NOTEDuring battery replacement the UPS will not be able to support the load if a mains failureoccurs! It is recommended to switch off the load before disconnecting the DC connector as instep 2.1. Remove the plastic front from theUPS cabinet (and/or batterycabinet)2. Disconnect the DC connector3. Loosen the 4 screws that hold thebattery tray4. Slide out the battery tray. Becareful: it can be heavy!5. Insert the new battery tray intothe UPS, fix it with the 4 screws.6. Connect the DC connector.7. Install the plastic front panel.fig. 7.4.2If you want to change only the batteries and notthe full tray with batteries, please contact your dealer.General guidelines:Don’t throw batteriesaway, treat them asharmful waste• When replacing the batteries, use only the same type and size battery.• Never short the battery terminals. Shorting may cause the battery toburn. When working with batteries remove watches, rings or other metalobjects and only use insulated tools.• Avoid charging in a sealed container.• Proper disposal of batteries is required: refer to your local codes fordisposal requirements.• Never dispose of batteries in a fire: they may explode.• Never disassemble or reassemble batteries; their contents (electrolyte)may be extremely toxic. If exposed to electrolyte, wash immediately withplenty of water, if eye contact occurs flush with water and contact aphysician.modifications reservedOPM_VHE_XXX_0K7_3K0_XGB_V010 21 User manual VH Series 700-3000 UPS 1.0 (GB)