BA-en-3021-1912_R23ATR
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5. Maintenance
Warning!
Electric shock hazard!
• Do not carry out any maintenance or repair work without first switching
off the high voltage and disconnecting the supply voltage.
• The bars passively absorb energy from the moving substrate web. The
high voltage cable must be plugged in or grounded to the power supply.
If the high voltage cable is disconnected, the plug is live (high voltage)
and applies with full power on the plug; this may cause a spark dis-
charge and may lead to a risk of injury. Disconnected high voltage plugs
are not permitted or have to be groundedThe machine which has the
charging bars fitted must not be in operation.
• Before carrying out any work involving the units, the machine which has
the units fitted must not be in operation.
• Repairs and maintenance work must be carried out only by qualified
electricians.
To ensure the proper function of the charging bars, clean the bars at least
once a week using compressed air (6 bar max.) free of oil and water and a
brush with soft plastic bristles.
Use a suitable solvent (benzine) to remove dirt or grease. Do not immerse
the charging bar or the high voltage cable in solvent
Warning!
Risk of deflagration!
Before restarting the charging bar, make sure that the solvent has evapo-
rated completely.
Caution!
Do not damage the emission tips of the bars.
Inspection of the protective resistors - contact protection
The function and the appearance of the protective resistors must be
inspected at regular intervals. The inspection intervals are specified in the
accident prevention regulations, as amended (e.g. in Germany DGUV
V3). Eltex recommend inspection intervals of 6 months.
The function of the series resistors must be checked using a suitable
measuring device. The test voltage must be 1,000V. The measured resis-
tance between the high-voltage connection and the individual emission tip
must not fall below 234 MOhm and not exceed 286 MOhm.