Liebert 110V manual Operating Instructions, General Notes

User Manual Chapter 2 – Operating Instructions

Network Power Switch

2 Chapter 2 – Operating Instructions

2.1 Introduction

The Network Power Switch can be considered to be in one of the three operating conditions:

•Normal Operation - All relevant power switches and fuses closed and the Load is connected to Network Power Switch output

•Manual Bypass – The load is connected to the input supply directly.

•Shut down - All power switches are off and load is not operational.

2.2General Notes

NOTE: All users controls and indicators mentioned in these procedures are identified in chapter1

External Cable

O/p Line

Neutral - 2

Neutral - 1

I/p Line - 2

I/p Line - 1

Common

S2 Healthy

S1 Healthy

Input Fuse 2

Input Fuse 1

Snap-on

Connector

External Cables Potential	Earthing
Free Contacts

Rear View

Fig 2.1 - Power Connection details for Network Power Switch

2.3Procedure for Switching the Network Power Switch to power the load from a Power Off condition

This procedure should be followed when turning on the Network Power Switch from a fully powered down condition -i.e. when the load is not being initially supplied at all. It is assumed that the installation is complete; the authorized personnel have commissioned the system.

1.Select the priority to source1. Close the fuse FS1.

2.Check for the LED S1 healthy, S1 priority, S1 feed and LED load on source1 to glow.

3.Close the fuse FS2.

4.Check for the LED S2 healthy to glow.

5.Using priority switch transfer the load to source2, check this transfer does not affect the load.

6.Transfer the load to source 1 again and check this transfer does not affect the load.

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