www.megger.com
DLRO100E, 100X & 100H – 100A
3
G
Safety warnings
These must be read and understood before use. Retain these safety warnings for future reference.
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CAUTION:
THE INSTRUMENT MUST BE OPERATED ONLY BY SUITABLY TRAINED AND COMPETENT PERSONS
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Users of this equipment and their employers are required by National Health and Safety Legislation to carry out valid
risk assessments of all electrical work so as to identify potential sources of electrical danger and risk of electrical injury.
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The instrument must NOT be used if any part of it is damaged.
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Damaged test leads must NOT be used. Test leads, connectors and mechanical guards must be in good order, clean and
with no broken or cracked insulation.
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Fan filters and covers giving access to internal conductive parts must be correctly fitted before use.
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Testing inductive circuits can be hazardous: The DLRO100 is a high power instrument, designed for testing resistive
loads. It must NOT be used to test inductive loads.
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DANGER!
The instrument is not fully protected when switched off.
• Switch the instrument ON before connecting to the test subject.
• The test subject must be switched off, de-energised and checked before test connections are made. Ensure that the
test subject cannot be re-energised whilst the instrument is connected.
• Do not leave the equipment unattended when connected to the test subject.
• Do not leave the equipment connected to the test subject after the test is completed.
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The user must exercise caution when connecting to and disconnecting from the test subject.
• Always connect test leads to the instrument before attaching to test subject.
• Keep hands behind tactile barriers on probe clips and clamps when making or breaking connections.
• High current connections between the instrument and test subject must be secured against accidental detachment
and must not be disengaged whilst test current is flowing.
• High current test leads must be a minimum of 3 milliohm resistance.
• Circuit terminals must not be touched during test.
• Do not disconnect the instrument from the test subject until the test current has stopped and the TEST warning
indicator is extinguished.
• Test leads and connections may become hot during use. Exercise caution when handling.
• Disconnect from the test subject before switching the instrument OFF.
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DANGER!
Some models can be operated by remote control. A test can be started at any time by remote control. These
additional precautions must be taken for instruments with a remote control function.
• Measurement connections must be handled only when precautions have been taken to prevent a remote control
test start.
• If the remote control link should fail, the test must be stopped manually by pressing the TEST button.
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If this equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may
be impaired.
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Fan filters are user-serviceable. Disconnect all measurement leads and switch the instrument OFF before servicing the
fan filters.
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There are no user-serviceable parts inside the instrument; all servicing, including fuse replacement, must be referred to
Megger approved service centres.
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Use only Megger approved battery pack, and follow the instructions provided with the battery
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Warning!
This instrument contains a Lithium Ion High Energy Battery Pack and a lithium coin cell.
• Do not pierce, damage, disassemble or modify the battery. The battery contains safety and protection devices
which, if tampered with may cause the battery to generate heat, rupture or ignite.
• Never heat (or dispose of) the battery in a fire.
• Do not subject the battery to strong impact, mechanical shock or excessive heat.
• Do not expose the battery to water, salt water or other liquids, or allow the battery to get wet.
• Never short-circuit or reverse the polarity of the battery pack.
• In the event of a battery cell leaking, do not allow the released fluid to come into contact with the skin or eyes. If
contact has been made, wash the affected area with plenty of water and seek medical advice immediately.
