Master Lock XR20 Wartungshandbuch PDF herunterladen (Seite 30)

2.0 INSTALLATION AND POWER ON CHECK

XR Series power supplies are intended for rack mount installations only and are designed to fit

in standard 19" equipment racks. Additional support, other than that provided by the front panel,

is required. Angle slides or cross beam supports securely fastened to the rack are recommended

for supporting the weight of the power supply. The unit should be horizontally mounted.

Caution: The power supply is too heavy for one person to safely lift and mount.

To avoid injury, ask a co-worker for assistance.

2.1 Cooling

Each power supply enclosure is cooled by suitable blowers exhausting warm air to the rear of the

cabinet. Fresh air intake is from the sides of the cabinet allowing two or more XR Series

supplies to be stacked. Equipment racks should be equipped with fans or blowers to remove heat

generated by the power supplies. The manufacturer recommends fresh air intake at the bottom

of the cabinet and exhaust at the top. Fans and blowers should be rated at 300 CFM for each XR

Series supply.

Caution: blocking ventilation will cause the power supply to overheat.

2.2 AC Input Connections

Caution: disconnect AC power from the mains before attempting any

installation procedure.

Caution: a safety ground wire must be connected to the unit as indicated by

the protective ground symbol at the rear of the power supply.

AC power is wired to the power supply by attaching three cables plus ground for 3-phase

installations and two cables and ground for single phase installations. The manufacture

recommends cables, as specified in Tables 2.1 or 2.2, be crimped to ring terminals and securely

fastened to the studs at the rear of the power supply. After connections are made, screw the four

standoffs into the back panel and place the protective shield over the connections.

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Master Lock XR20 Wartungshandbuch Seite 30