Instructions

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10.2 Procedure to replace batteries
WARNING: Do not switch the instrument on with the battery cover removed.
The rear cover must not be opened if the test leads are connected.
1. Switch off the instrument and disconnect (the instrument) from any electrical circuits.
2. To avoid the possibility of electric shock, do not press the test button or touch the fuse when changing
batteries.
3. To remove the rear cover, remove the retaining screw from the rear of the battery cover and lift the
cover off.
4. Remove the dead batteries and refit new batteries, observing the correct polarity as marked on the
battery compartment.
5. Replace the cover and retaining screw.
6. Switch on instrument and check battery indicator.
WARNING: - Incorrect battery polarity may prevent instrument operation or can
cause electrolyte leakage or damage the instrument. If the battery condition
indicator does not show a full charge, a cell may be reversed.
Note: Batteries should not be left in an instrument, which may remain unused for an extended period.
10.3 Fuse Blown indication
If the fuse has blown after contact with a live supply, the fuse blown symbol [ ] and the ‘UnS’
message will be displayed and the instrument will start beeping. These symbols and a periodic beeping will
continue until the instrument is switched off. This will only happen if a serious internal fault has occurred.
Please contact Megger Limited at the contact address at the end of this guide, or call Technical support on
[phone] for further assistance.
The fuse must not be replaced until advice has been received from Megger Limited.
11. Auto power down
To extend battery life the instrument will automatically switch off two minutes after the last operation. It can
be switched off by selecting ‘OFF’ with the lower range switch, or switched back on again by pressing the
[TEST] button.
To extend the auto switch off time to 20 minutes, refer to section 8, SETUP options.
12. Preventive maintenance
Clean only with a damp cloth. Do not use any alcohol based cleaning fluids as they may leave a residue.
Isopropyl alcohol (or similar solvent cleaner) should only be used to clean the 4mm probe sockets on the
instrument on a regular basis.