15-11
IM 2558A-01EN
Troubleshooting, Maintenance, and Inspection
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15.7 Recommended Part Replacement
YOKOGAWA guarantees the 2558A for the period and under the conditions of the product warranty.
The warranty does not cover the following expendable items. The replacement period for expendable
items varies depending on the conditions of use. Refer to the table below as a general guideline.
Contact your nearest YOKOGAWA dealer to have parts replaced.
Part Name
Recommended Replacement Interval
Cooling fan
3 years
Filter
1 year
Output relay
1
Approx. 25000 operations
1 The number of relay operations may increase if the relay is controlled with the communication (USB,
Ethernet, or GP-IB) feature.
15.8 Adjustment and Calibration
Adjustment
The 2558A should be adjusted by a qualified engineer at a qualified facility with sufficient precision.
For information on how to adjust the 2558A, see the following webpage. To download the information,
you need to register.
http://tmi.yokogawa.com/products/generators-sources/standard/2558a-ac-voltage-current-standard/
Calibration
We recommend that you calibrate the 2558A once every 180 days to assure its accuracy.
Contact your nearest YOKOGAWA dealer to have your 2558A calibrated.