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9.0 Maintenance instructions
The one-year service interval only applies if the heater is installed in a dry and clean
environment. If installed in environment which does not meet these requirements, the
service intervals might have to be reduced.
The responsible for the maintenance must ensure that his employees are fully trained and
supervised in the proper working procedures to ensure their safety.
1. Check the ceramic insulators on the elements for damage.
2. Check the insulation resistance of the heating elements.
Connect the Megger to an earth bolt and one of the phases U1, V1 or W1. If the
measured value is less than 2 Mega ohms, each heating element will have to be
checked separately. Minimum value is 10 Mega ohms at 1000 volts.
*The Ex certificate together with the IOM is documentation and as soon as equipment is
ATEX and/or IECEx-marked and certified, shall the manufacturer always be contacted
before any repair jobs are planned to get the correct instruction or approval to make the
repair job.
If this is not followed, the certification will be voided.
*
Text also
references to page 18
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