Verify the following:
· Outer enclosure and hand grip parts are undamaged.
· The power cord plug is undamaged (i.e. not cracked or charred, and without deformed contacts).
· The power cable is protected against ripping out of the plug or the machine and its insulation is undamaged.
- the electrical lines and connections in the ozone generator are good.
2. Protective earth line check
Verify the following:
· The PE wire is firmly and properly connected.
· The length of the power cable live and return wire allows them to be strained before straining the PE wire when
the cable leaves the cable relief hook.
4. Measurements
· Measure the insulation resistance with the machine and its power cable cold. Test with a continuous voltage of
500 V (from a 500 V megohmmeter). The insulation resistance values shall not be less than:
2 MΩ for Protection Class I and III equipment;
7 MΩ for Protection Class II equipment.
· The maximum permissible resistance of the PE wire is 0.1 Ω.
· The measurement results are positive when:
Rp ≤ Rw and RPE ≤ RPR, with:
Rp - measured insulation resistance
Rw - maximum permissible insulation resistance
Rpe - maximum permissible wire resistance
Rrr-w - maximum permissible PE wire resistance
Ozone generator testing intervals:
Cat. I: 6 months (infrequent operation per month)
Cat. II: 4 months (frequent operation, 1 to 3 times a day)
Cat. III: 2 months (continuous operation on several work shifts)
Categories defined in PN-88/E-08400/10: Handheld electrical power tools: Inspection tests during the operating
life.
Note: Reduce the given testing intervals by half if the ozone generator is operated at elevated risk of mechanical
damage, in damp rooms, extreme conditions, etc.
