Meter Maintenance; General Maintenance; Replace Battery And Fuse; Replacing Test Leads - Mastech MY70 Operation Manual

5. Meter maintenance

This section provides basic maintenance information,
including instructions for replacement of fuse and battery.
Do not try to repair the meter unless you are an experienced
maintenance person with the relevant calibration, performance
testing and maintenance data

5.1 General maintenance

WARNING:
To avoid electrical shock or damage to the meter, don't wet the
inner surfaces of the meter. Before opening shell or battery
cover, you should remove the connecting cable between the
test probe and the input signal.
Regularly clean the meter shell with damp cloth and a small
amount of detergent. Do not use abrasives or chemical solvents.
If you make input socket dirty or wet, it may affect the readings.
To clean input socket:
Turn off the meter, and pull out all test probes from the input
socket.
Remove all dirt from the socket.
Apply detergent or lubricant (such as WD-40) to a new cotton
ball.
Clean each socket with a cotton ball. Lubricant can prevent
contamination related with moisture on the socket.

5.2 Replace battery and fuse

WARNING:
To avoid electrical shock or personal injury, before opening the
battery cover to replace battery, you should turn the meter off
and make sure that the test probe is disconnected from the
measurement circuit.
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To avoid wrong readings, electric shock or personal injury, when
" "appears on the meter display, replace the battery
immediately.
Use only a fuse with specified amperage, fusing rated value,
voltage rated value and fusing speed (F1:FF 400mA H 600V,
F2:FF 10A H 600V)
Please follow below steps to replace battery or fuse:
1. Turn off the power supply of the meter.
2. Pull out all test probes from the input socket.
3. Loosen two screws on the fixed battery cover with screwdriver.
4. Remove the battery cover.
5. Remove the old battery or damaged fuse.
6. Replace with a new battery with 9V (6F22) or a new fuse.
7. Replace the battery cover and tighten the screws.

5.3 Replacing Test Leads

If insulation on leads is damaged, replace it.
WARNING:
Use meet EN 61010-031 standard, rated CAT III 600V,
10A or better test leads.

5.4 Cleaning and Decontamination

1. The meter can be cleaned with a soft cloth to remove any
oil, grease or grime.
2. Do not use liquid solvent or detergent.

6. Accessories

• Test Leads
• Package
• 9V Battery
• User's Manual
1set
1pcs
1pcs
1pcs
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