Maintenance
Introduction
5
5-3
Warning
Servicing described in this section is to be done by qualified
personnel only. To avoid electric shock or fire, do not service
the 732B unless you are qualified to do so.
Introduction 5-1.
This section explains how to calibrate the 732B and how to do other maintenance tasks.
You can also return the 732B to Fluke for recalibration and certification of traceability to
NIST (National Institute of Standards and Technology, formerly NBS). (See Section 1
for the procedure to obtain service or calibration from Fluke.)
Service Information 5-2.
The 732B is warranted for a period of 1 year on delivery to the original purchaser. The
Warranty is located on the reverse side of the title page at the front of this manual.
Factory authorized calibration and service for Fluke products is offered at various
worldwide locations. A list of Fluke Service Centers is located at the end of the parts
lists in Section 6. Refer to Section 1 for shipping information.
Replacing the Fuse 5-3.
Refer to Section 2 for the fuse access procedure.
Cleaning the External Surfaces 5-4.
Caution
To prevent possible damage to the surfaces of the standard, do
not use aromatic hydrocarbons or chlorinated solvents for
cleaning.
When the 732B is properly cared for and kept in a controlled atmosphere, you seldom
need to clean it. However, any contamination, particularly oil, on the instrument can
create leakage paths that can degrade accuracy.
To keep the standard looking like new, clean the case with a soft cloth slightly dampened
with water or a non-abrasive mild cleaning solution that does not harm painted surfaces
or plastics. Do not attempt to clean the interior of the instrument.
Calibration 5-5.
If the IN CAL indicator is off, or if your calibration interval is expiring, use one of the
following procedures to calibrate (assign a value to) the 732B. After you complete
calibration, reset the IN CAL indicator as described further on in this section.
To maintain its status as a traceable standard following calibration, the 732B must
continue to receive uninterrupted operating voltage from the ac line or from the internal
battery. If operating power is interrupted, the front panel IN CAL indicator goes off and
recalibration is necessary.
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