5.Tighten the hex nuts.
Preparing the rails for integrated shipping
If the unit is to be shipped in an HP 9000 or 10000 series rack:
1.Remove the hex nuts, flat washers, and lock washers from the mounting rail.
2.Install the rail reinforcement plates and tighten using the hex nuts with captive washers included in the kit, instead of the nuts included with the rail.
3.Install the rear mounting brackets using hex nuts. Wait until the unit is installed and the brackets are adjusted before tightening the nuts.
Installing the UPS
Before installing the UPS, review and observe all warnings in "Precautions (on page 11)."
WARNING: Uneven mechanical loading in the rack may cause a hazardous condition.