ELECTRON-BEAM POWER SUPPLY ～HPS-1600F～
56
7. Troubleshooting
In this chapter, we describe how to handle when the trouble occurred
7.1. Troubleshooting
If any trouble occurs, initial diagnosis needs to be performed following Fig. 7.1.
Details on each trouble are described in Tables 7.1 to 7.4.
The symptoms of troubles described in this section are limited to those that have been experienced
or may occur in the future. If a trouble occurs together with trouble of the EB gun, its symptom may
differ from which is described here.
Also in reference to the details on the troubleshooting described in the operations manual of the EB
gun, take measures.
1. The EB power supply generates a voltage that is enough to pose a danger to human
life. If you need to touch the EB power supply and its surroundings (including the EB
gun) for inspection etc, shut off (OFF) the MAIN circuit breaker of the EB power supply
and your main breaker for the EB power supply and then leave them for 5 minutes or
more.
2. Incomplete earth is very dangerous to the human body. Thoroughly check that the cable
connections are not loose or insufficiently long. For provisions on the earth, see Fig. 3.1.
3. Never use in a wet environment. An electric shock may occur even at a low voltage. If
water leakage or the like occurs, be sure to wipe out water and dry before use.
4. Use a lead wire for connection that is not damaged and with a withstand voltage of at
least two or more times the circuit voltage. In addition, when switching the power supply
MAIN circuit breaker to ON, be careful that these does not contact the charging part.
1. Do not use the EB gun with interlocks short-circuited.
2. Maintenance shall be performed by or under the instructions of an expert operator for
handling high voltage.
3. Do not place measurement equipment in an unstable position.
4. For capacitors of a withstand voltage of 50V or more, short-circuit the portion between
the terminals and check that the electrical charge is discharged before touching it.
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