Liebert Series 600T Matching Battery Cabinets Optional, Rack-Mounted Batteries, Power Batteries

Matching Battery Cabinets (Optional)

Although the individual battery cells are sealed (valve-regulated) and require only minimal maintenance, the Battery Cabinets should be given a periodic inspection and electrical check. Checks should be performed at least annually to ensure years of trouble-free service.

Voltage Records. With the Battery Cabinet DC circuit breaker closed and the connected UPS operating, mea- sure and record battery float voltage. With the DC circuit breaker open, measure and record the nominal (open circuit) voltage. Both these measurements should be made across the final positive and negative terminal lugs. Compare these values with those shown below. The recorded nominal voltage should be no less than the value shown, while the recorded float voltage should be within the range shown. If a discrepancy is found, contact Lie- bert Global Services.

Number of Cells	Battery Voltage (VDC)
	Nominal	Float
240	480	527 - 576

Power Connections. Check for corrosion and connection integrity. Visually inspect wiring for discolored or cracked insulation. Clean and/or retighten as required. Refer to torque specifications in Table 4.

Battery Cell Terminals. Check for discoloration, corrosion, and connection integrity. Clean and tighten if nec- essary. Note that when installing a new battery, the initial torque value is 5 lb.-in. more than the retorque value. Retorque values are:

Battery Manufacturer	Battery Model Number	Retorque Value
Johnson Controls Batteries	UPS12-270(FR)	32 lb-in.
	UPS12-310(FR)	52 lb-in.
	UPS12-370(FR)	52 lb-in.
	UPS12-475(FR)	100 lb-in.
C&D Batteries	LS12-100	100 lb-in.
	12G-17	100 lb-in.
Power Batteries	PRC12110X	65 lb-in.
	PRC12120X	65 lb-in.
	PRC12150X	85 lb-in.
	PRC1290X	65 lb-in.
	TC12110X	65 lb-in.
	TC12120X	65 lb-in.
	TC12150X	85 lb-in.
	TC1290X	65 lb-in.

If you have a different model battery, contact Liebert Global Services for the required torque value.

To access battery cell terminals, disconnect the inter-tier cable and two shelf retaining screws. Once discon- nected, insulate (with protective boot or electrical tape) the cables to prevent accidental shorts. The battery shelf can now be pulled out. Tighten each terminal connection to the retorque value. When replacing a battery, the ter- minal connections must be cleaned and tightened. Disconnect and insulate the cables connected to the battery. Secure each battery shelf with retaining screws when maintenance is complete.

Rack-Mounted Batteries

If the UPS system uses a battery other than a factory-supplied Matching Battery Cabinet, perform maintenance on the battery as recommended in the battery manufacturer’s maintenance manual.

4.3.4Torque Requirements

All electrical connections must be tight. Table 4 provides the torque values for the connections in the UPS.

NOTE

Refer to battery manufacturer's manual for the proper torque values required for the battery.

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