User's Manual

Table Of Contents

mBSC-H DAS System

Installation Manual Issue 7

component of the Host Unit requires replacement, care must be taken with modules so that seals are not

damaged unintentionally as this may void warranty.

Please see the Replacement Parts List for specific components available.

6.3 NMS

The NMS may require periodic updates, both Firmware and Software. Please see Sections 4.4.7 Firmware

Updates and 4.4.8 Software Upgrade Installation.

6.4 REMOTE UNITS

It is important to note that preventative maintenance is not required for the Remote Unit.

Danger: Disconnect the Remote Unit from the mains prior to any maintenance.

NOTE: It is important to note that preventative maintenance is not required for the

Remote Unit.

6.4.1 Fans

Visually inspect fan units at intervals based upon the location, corresponding environment and pollution

levels. Maintenance is not required for the fan units, but the fan units may be cleaned, if needed using any

commercially available small compressed air device (max. 5 bar).

Once an RU has been powered up for the first time, the fans rotate at full speed. After one minute, the fan

speed will decrease to 75% and after another minute, the fan speed decreases to 25% and will then stay at

25% until the RU reaches its normal operating temperature.

In a normal operating situation, the fans are generally operating at approximately 50% of their power, this

helps prevent dust and other contaminants from settling on the fan blades and the cooling fins. A fan alarm

will be generated should the fan current drop below its normal operating fan speed. Please see the

Replacement Parts list should a replacement fan unit be required and follow any replacement instructions

provided by the manufacturer.