Fuse Replacement - Radian RD-30 Operation Manual

Service & Routine Maintenance
The RS-703A Automated Calibration System collects a data point on a RD Radian standard
every 5 (five) seconds on up to sixteen standards simultaneously, collecting literally thousands
of data points on an overnight run. In addition each RS-703A provides computer control over
an environmental chamber to ensure proper temperature range operation of the standard being
tested. Please contact Radian Research for further information on recalibration and recertification
services.
5.4 Fuse Replacement
Fuse replacement is not very likely because of the elimination of the primary side switching.
However, fuses are included and are accessible without disassembly. There are four fuses: three
potential input and one auxiliary power. All fuses are located under the red potential and auxiliary
power inputs. Fuse replacement is performed as follows:
o
1. Remove the red terminal of the circuit with bad fuse by rotating 90
counter-clockwise and then lift out the unit.
2. Remove the fuse by rotating it clockwise in the retaining screw.
3. Replace the fuse by rotating it clockwise in the retaining fuse.
o
4. Replace the terminal in the same orientation it was removed and rotate it 90
clockwise to lock in place.
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RD-30 Operations Manual