APC Symmetra RM 4–12 kVA UPS Installation Manual - APC Media

CHAPTER 1: SAFETY AND GENERAL INFORMATIONDeenergizing SafetyThe UPS contains internal batteries and may present a shock hazard even when disconnectedfrom the branch circuit (mains). Before installing or servicing the equipment, ensure that thesystem enable switch and input circuit breaker are set to stand-by (OFF), that internal batterymodules are removed, that external extended run batteries are disconnected and the branchcircuit (mains) is disconnected.Electrical Safety• The protective earth conductor for the UPS carries the leakage current from the load devices(computer equipment). Therefore, the size of the conductor must be at least as large as thewire required by IEC 950. An insulated grounding conductor that is identical in size, insulationmaterial, and thickness to the grounded and ungrounded branch-circuit supply conductors,except that it is green with or without a yellow stripe is to be installed as part of the branchcircuit that supplies the UPS.• The grounding conductor described above is to be grounded to earth at the serviceequipment, or if supplied by a separately derived system, at the supply transformer or motorgeneratorset.• The attachment-plug receptacles near the unit or subsystem are all to be of a grounding type,and the grounding conductors serving these receptacles are to be connected to earth groundat the service equipment.Battery Safety• Each battery module is a 120 V, 7.2 Ah battery pack. There is a risk of energy hazard. Beforeinstalling or replacing battery nodules, remove jewelry such as wristwatches and rings. Highshort -circuit current through conductive materials could cause severe burns.• Do not dispose of batteries in a fire. The batteries may explode.• Do not open or mutilate batteries. Released electrolyte is harmful to the skin and eyes, andmay be toxic.Do not install the battery modules in the frame until you are ready to power up the UPS. Failureto do so can result in a deep discharge of the batteries, which may cause permanent damage.• Batteries are recyclable. Used batteries can be sent to APC for recycling or delivered to arecycling facility.• Store the battery module(s) at a cool ambient temperature of < 25 °C.• Only use APC batteries when adding or replacing battery modules in the UPS.2