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525A
Service Manual
To avoid possible electric shock or personal injury, follow these guidelines:
•
Use the Calibrator only as specified in this manual or the protection provided by the
Calibrator might be impaired.
•
Inspect the Calibrator before use. Do not use the Calibrator if it appears damaged.
Look for cracks or missing plastic. Pay particular attention to the insulation around
the connectors.
•
Have the Calibrator serviced only by qualified service personnel.
•
Do not apply more than the rated voltage between the terminals, as marked on the
Calibrator, or between any terminal and earth ground.
•
Always use the power cord and connector appropriate for the voltage and outlet of
the country or location in which you are working.
•
Never operate the Calibrator with the cover removed or the case open.
•
Never remove the cover or open the case of the Calibrator without first removing the
power source.
•
Use caution when working with voltages above 30 V ac rms, 42 V ac peak, or
60 V dc. These voltages pose a shock hazard.
•
Use only the replacement fuse(s) specified in this manual.
•
Use the proper terminals, function, and range for your measurements.
•
Do not operate the Calibrator around explosive gas, vapor, or dust.
•
When servicing the Calibrator, use only specified replacement parts.
2
Table 1. Symbols Used on the Calibrator
AC (Alternating Current)
DC (Direct Current)
Pressure
Chassis protective ground
Important Information. Refer to the
manual.
Caution, risk of electric shock
W
Warning
Earth ground
Ω
Resistance
Conforms to European Union directives
Canadian Standards Association,
NRTL
International ON/OFF symbol.
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