Motorola STARLINE SERIES Instructions d'exploitation télécharger pdf (Page 35)

3-14 Amplifier Setup

BLE*/* Installation and Operation Manual

Powering and Surge Protection

In conventional applications, the BLE*/*s are powered through the input port.

CAUTION!

To avoid damage to the hybrids, it is recommended that you remove the input pad (JXP-IN) before you apply power to

the BLE*/*.

A 20-ampere, blade-type fuse is furnished in the amplifier module and provides overcurrent

protection for ac power applied to the input. You can power the BLE*/* from the output without

passing power through to the input port. To block power from the input port, remove the

power-block jumper illustrated in Figure 2-8.

WARNING!

To avoid possible injury to personnel or damage to the equipment, remove 60/90 volt ac power from the system

before you remove any components from the housing.

The BLE*/* is shipped from the factory configured for 38 through 90 Vac powering as described

in Section 2, “Overview”. To configure the BLE*/* for 55 Vac through 90 Vac operation:

1 Remove the electronics chassis from the housing.

2 Remove the power-supply cover.

3 Move the LO/HI selector (jumper J1 on the power-supply board) from the LO to HI position.

Figure 2-6 illustrates the jumper location.

4 Re-install the power-supply cover and torque the screws to 10 to 12 in-lbs.

5 Re-install the electronics chassis in the housing and torque the hold-down bolts to 18 to

22 in-lbs.

Standard surge protection is provided in the power supply by a heavy-duty, 230-volt, gas

discharge surge protector. As an option, you can replace the gas discharge tube with the FTEC

overvoltage protector. The FTEC has a firing potential of approximately 245 volts.

To install the FTEC:

1 Remove the electronics chassis from the housing.

2 Remove the power-supply cover.

3 Remove the gas-tube surge protector, illustrated in Figure 2-6.

4 Replace it with the FTEC.

5 Re-install the power-supply cover and torque the screws to 10 to 12 in-lbs.

6 Re-install the electronics chassis in the housing and torque the hold-down bolts to 18 to

22 in-lbs.

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Motorola STARLINE SERIES Instructions d'exploitation Page 35