Metrel MD 9030 Digital-Multimeter, DMM, 20991441 Hoja De Datos

12 

 
WARNING 
To avoid electrical shock, disconnect the meter from any circuit, remove the test leads 
from the input jacks and turn OFF the meter before opening the case. Do not operate 
with open case. 
 
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 
batteries and store them separately  
 
Trouble Shooting 
If the instrument fails to operate, check batteries and test 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. 
Battery and Fuse replacement 
Battery use:  
Standard 1.5V AAA Size (NEDA 24A or IEC LR03) battery X 2 
Standard CE Version MD 9030 series fuses: 
Fuse (FS1) for 

AmA current input: 0.5A/250V, F fuse; 

Fuse (FS2) for A current input: 15A/250V, F fuse 
Protection-reinforced CE + UL Version MD 9030 series fuses: 
Fuse (FS1) for 

AmA current input: 0.63A/500V, IR 200kA, F fuse; 

Fuse (FS2) for A current input: 12.5A/500V, IR 20kA, 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. 
 
Fuse replacement (and also Battery 
replacement for splash proof version without 
battery access door): 
Loosen the 4 screws from the case bottom. Lift 
the end of the case bottom nearest the input 
jacks until it unsnaps from the case top. 
Replace the blown fuse(s) and/or the battery. 
Replace the case bottom, and ensure that all 
the gaskets are properly seated and the two 
snaps on the case top (near the LCD side) are 
engaged. Re-fasten the screws..