6.2 Maintenance
6.3 Calibration
6.4 Repairs
Maintenance should be performed only by quali-
fied persons familiar with the hazards involved with
high-voltage test equipment. Read and understand
Sections 1, 2, 3, 4, and 5 before performing any
service.
The TTRU3 requires only periodic inspection. Inspect
all hardware items to ensure all are in good condi-
tion.
The TTRU3 may be cleaned periodically. In so doing,
do not allow water to penetrate panel holes. An
all-purpose, household spray cleaner can be used to
clean the panel. Polish with a soft, dry cloth. Clean
the cables and mating panel receptacles with isopro-
pyl or denatured alcohol applied with a clean cloth.
A complete performance and calibration check
should be made at least once every year. This
will ensure that the TTRU3 is functioning prop-
erly over the entire measurement range. The
TTRU3 calibration is performed on each new or
repaired unit before sending it to a customer.
Any service or repair of this equipment should
be performed only by qualified persons who are
aware of electrical hazards and the necessary
precautions required to prevent injury.
Megger offers a complete Repair and Calibra-
tion Service and recommends that its custom-
ers take advantage of this service for routine
maintenance or in the event of any equipment
malfunction.
In the event Service is required, contact your
Megger representative for a product Return
Authorization (RA) number and shipping in-
structions.
Ship the product prepaid and insured and
marked for the attention of the Megger Repair
Department. Please indicate all pertinent
information, including catalog number, serial
number, and problem symptoms.
Service
Information subject to change without notice 55
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