Power Interface Module - Optional -48V Dc Unit; Dc Operation - Replace The Fuses - Comtech EF Data UT-4579 Installation And Operation Manual

UT-4579 X-Band Up Converter
Front and Rear Panel Connectors
4.2.1.2 Power Interface Module – Optional -48V DC Unit
Figure 4-10. Optional DC Power Module
As shown in Figure 4-5 and Figure 4-10, the DC power interface module consists
of the following components:
Item 1 – Power Connection
This is a standard 2-circuit terminal block. Note the following:
• Input power – 75W maximum, less than 65W typical.
• Input voltage – 36V to 72V DC.
Item 2 – Press-fit Fuse Holder
Install two 3.15A 20mm Slo-Blo type fuses into this fuse holder, one each for line
and neutral fusing.
Item 3 – Power Switch
Use this switch to apply power to the unit.
4.2.1.2.1 DC Operation – Replace the Fuses
WARNING!
DISCONNECT THE POWER SUPPLY BEFORE PROCEEDING!
CAUTION
FOR CONTINUED OPERATOR SAFETY, ALWAYS REPLACE THE FUSES
WITH THE CORRECT TYPE AND RATING.
Do these steps to replace the DC fuses:
1. Disconnect the power supply leads.
2. Pry the fuse holder outward from the DC power supply module.
3. Remove and replace the 3.15A 20 mm Slo-Blo fuses as needed.
4. Press fit the fuse holder back into its receptacle.
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MN/UT4579.IOM
Revision 1