Removing an MX2000 Single-Phase AC Power Distribution Module
Before you remove a single-phase AC PDM, be aware of the following:
Before performing AC power procedures, disconnect all power sources. To ensure that all power is off, locate the circuit breaker on the panel board that services the AC circuit, switch the circuit breaker to the off position, and tape the switch handle of the circuit breaker in the off position.
To maintain proper cooling and prevent thermal shutdown of the operating power supply unit, each PDM slot must contain either a PDM or a blank panel. If you remove a PDM, you must install a replacement PDM or a blank panel shortly after the removal.
After powering off a PDM, wait at least 60 seconds before turning the circuit breaker back on.
The PDMs are hot-swappable in a redundant configuration. However, you cannot switch from one type of PDM (AC or DC) to another while the system is on.
Each single-phase AC PDM weighs approximately 9 lb (3.6 kg). To remove a single-phase AC PDM: