Amprobe AM-140-A User Manual
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Trouble Shooting
If the instrument fails to operate, check battery, fuses, leads, etc., and replace
as necessary. Double check operating procedure as described in this user’s
manual. If the instrument voltage-resistance input terminal has subjected to
high voltage transient (caused by lightning or switching surge to the system)
by accident or abnormal conditions of operation, the series fusible resistors will
be blown off (become high impedance) like fuses to protect the user and the
instrument. Most measuring functions through this terminal will then be open
circuit. The series fusible resistors and the spark gaps should then be replaced
by qualified technician. Refer to the LIMITED WARRANTY section for obtaining
warranty or repairing service.
Cleaning and Storage
Periodically wipe the case with a damp cloth and mild detergent; do not use
abrasives or solvents. If the meter is not to be used for periods of longer than
60 days, remove the battery and store it separately.
Battery and Fuse Replacement
Battery use:
9V alkaline battery NEDA1604A, JIS6AM6 or IEC6LF22
AM-140-A
Fuse (FS1) for µAmA current input: 1A/600V, IR 10kA or better, F fuse;
Fuse (FS2) for A current input: 10A/600V, IR 100kA or better, F fuse
AM-160-A
Fuse (FS1) for µAmA current input: 0.44A/1000V, IR 10kA or better, F fuse
Fuse (FS2) for A current input: 11A/1000V, IR 20kA or better, F fuse
Battery replacement for models with battery access door:
Loosen the 2 screws from the battery access door of the case bottom. Lift the
battery access door and thus the battery compartment up. Replace the battery.
Re-fasten the screws.