MD 9273 Leakage Clamp
Maintenance
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Maintenance
This section provides basic maintenance information, including instructions for battery replacement. Do not
try to repair or carry out maintenance tasks on your clamp-meter unless you are qualified for the same and
have the corresponding information on maintenance, calibration and performance tests.
General maintenance
In order to avoid an electric shock or damage to the clamp, do not allow water to enter the body. Remove the
test probes and all the input signals.
Clean the body periodically with a wet cloth and a non-aggressive detergent. Do not use abrasive or solvent
products. Dust and humidity on the terminals can affect the readings.
To clean the terminals:
•
Disconnect the clamp and remove the test leads.
•
Clean the dust from the input terminals.
•
Wet a clean cloth with a cleaning and greasing product.
•
Clean both terminals. The greasing product insulates the terminals from contamination related to
humidity.
Changing the batteries
In order to avoid incorrect measurements that can cause an electric shock or personal injury, change the batteries
as soon as the (
) symbol starts blinking. Before changing the battery, disconnect all test leads and disconnect
the clamp-meter from all power sources.
To change the battery:
•
Move the rotary switch to the OFF position.
•
Disconnect the test probes and/or all the connectors of the input.
•
Use a screwdriver to remove the screw from the battery cover on the back of the instrument.
•
Remove the used battery cells and replace them with new ones.
•
Return the cover and screw it down.
Replacing test leads
Metrel suggests using either original test leads or standard 4mm banana test leads with plastic shielding
around the contacts. The shield both ensures the user safety and adds stability to the terminal to prolong its
life expectancy.
