Start-up procedureTasksSafetyWARNING!Obey the safety instructions during the start-up procedure. See Safety instructions forACS880 liquid-cooled multidrive cabinets and modules (3AXD50000048633 [English]).If you ignore the safety instructions, injury or death, or damage to the equipment canoccur.If you are not a qualified electrician, do not do installation or maintenance work.Checks/Settings with no voltage connectedMake sure that it is safe to start the work. Do the steps in section Electrical safety precautions (page 60).Make sure that the disconnector of the supply transformer is locked to the off (0) position, that meansno voltage is, or cannot be connected to drive inadvertently.Make sure that all external auxiliary circuits are switched off and disconnected. See the start-up instruc-tions in the supply unit hardware manual.Make sure that the supply unit is switched off, and the drive system has been isolated from the supplynetwork.DC/DC converter with the DC switch/disconnector [Q11]: Make sure that the DC switch/disconnector[Q11] and the DC/DC converter charging switch [Q10] are open and locked.Make sure that the energy storage disconnecting device is open and locked to open position (customeror system integrator-installed device).Make sure that the mechanical and electrical installation of the converter unit has been inspected andis OK. See the installation checklist.Make sure that the drive is ready for the converter unit power up:• The supply and inverter units have been installed according to the instructions given in their hardwaremanuals.• The supply unit has been started up according to the instructions given in the appropriate supplyunit manual.• The inverter units have been started up according to the instructions given in the hardware manualand appropriate firmware manual.For the supply and inverter unit hardware manuals, see Related documents (page 15).Note:If the drive has been stored over one year: Reform the electrolytic DC capacitors in the DC bus of thedrive. See the separate reforming instructions (available in the Internet or from your local ABB repres-entative).Close the auxiliary voltage circuit breakers of the converter unit [F21, F22]. Close also other circuitbreakers of the converter auxiliary circuits: cabinet fans [F115] and BAMU voltage/current measurement[F7] if present and the auxiliary voltage switch of the drive supply unit.Starting and checking the cooling systemFill up and bleed the internal cooling circuit. Start the cooling unit up. See Filling up and bleeding theinternal cooling circuit (page 118).Check the cooling system for leaks. Make sure that cooling circuit joints at the shipping split joiningcubicles are tight and that all drain valves have been closed.76 Start-up
