28
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11. Maintenance and Repair
WARNING:
before opening the rear cover, make sure the power supply has been turned off and the test
leads have been removed from the input ports and the measured circuit.
11.1 General Maintenance and Repair
Clean the meter casing with a soft cloth and mild detergent. Do not use abrasives or solvents!
If any abnormality is found with the meter, stop using it and send it for repairing.
If the meter needs to be checked or repaired, please ask for qualified maintenance personnel or authorized
maintenance department.
11.2 Batteries and Fuse Replacement
1)
Batteries replacement:
If LCD displays low battery symbol , batteries should be replaced in time to ensure
measurement accuracy. Internal battery specification: AA 1.5v ×2pcs
Operation Steps:
Switch off the power and remove the test leads from the input ports.
Remove the fixing screw with a screw driver, and open the battery cover to replace the batteries. Pay attention
to the polarity especially.
WARNING:
Do not mix old and new batteries. Do not mix alkaline, standard (carbon-zinc), or rechargeable batteries.
Fuse replacement:
The meter is unable to operate normally when the fuse is broken by voltage misdetection
or overcurrent, so the fuse should be replaced in time.
The step of replacing fuse is:
Switch off the power and remove the test leads from the input ports.
Remove the 6 fixing screw with a screw driver, and open rear cover with screwdriver to replace the broken fuse.
The fuse specifications: F1 Fuse 440mA/1000V
Φ
10 x 38mm CE
F2 Fuse 11A/1000V
Φ
10 x 38mm CE
Test leads replacement:
If insulation on test leads is damaged, please replace it in time.
WARNING:
Probe assemblies to be used for MAINS measurements should meet EN 61010-031 standard,
rated CAT III 1000V, 10A or better.
Screws
Lower cover
component
Fuse
Top cover
component
Screws
Battery cover and
kickstand component
Batteries
Figure 9
UT15B PRO/UT17B PRO User Manual
UT15B PRO/UT17B PRO User Manual
