NF BP4620, Instruction Manual

Page: 173 / 214

7.1 Introduction
BP4620
7-2
7.1 Introduction
To ensure use of the BP4620 under the best possible conditions, it is important to perform
maintenance as follows.

Operation verification: Check performed to verify whether the BP4620 operates correctly.

Performance test: Check performed to verify whether the BP4620 satisfies its ratings.

Adjustment & calibration: If the BP4620 does not satisfy its ratings, its performance can be
restored through adjustments and calibration by NF Corporation.

Troubleshooting: If the above actions fail to yield improvements, NF Corporation will
investigate the cause(s) of the fault and the fault location(s), and
perform the necessary repairs.
This instruction manual explains operation inspections and performance tests that can be easily
performed. For more detailed inspections, adjustments, calibration, and troubleshooting, contact NF
Corporation or an NF Corporation sales representative.
Operation inspections and performance tests require the following measuring equipment.

Oscilloscope Frequency band: 50 MHz and higher

Frequency counter Standard oscillator stability: Within 10 ppm

AC voltmeter TrueRMS type, accuracy: Within 0.2%, Frequency band: 300
kHz and higher
Recommended equipment: Agilent-made 34401A

DC voltage meter Accuracy: Within 0.1%
Recommended equipment: Agilent-made 34401A

Distortion meter Full scale: 1% or less, Frequency band: 100 kHz and higher

Sine wave oscillator Amplitude: Within 3 Vp-p, Frequency: 10 Hz to 100 kHz,
Distortion: Within 0.2%

Resistance load 3

/1200 W

Non-inductive current shunt 1 m

, 40 A or higher
7.2 Daily Maintenance
Use the BP4620 in a place that meets the installation conditions.
For the installation conditions, refer to “2.2 Installation Environment” .
If the panel or case surface is soiled, wipe it with a soft cloth. In the case of resistant stains, wipe
with a cloth that has been imbibed with a neutral detergent and then wrung well.
Wiping the BP4620 using an organic solvent such as thinner or benzene, or a pre-moistened wipe,
may cause degradation in material quality, clouding, or flaking off of the paint, and must therefore be
avoided.