Metrix MX 604 Notice De Fonctionnement page 14

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1.5. Repair
Return your instrument to your distributor for any work to be done within or outside the
guarantee.
1.6. Maintenance
Clean the instrument with a damp cloth and soap. Let it dry before using it again. Never use
abrasive products or solvents.
2. INSTRUMENT DESCRIPTION
This surge arrester tester, associated with a megohmmeter, is designed to provide you with
a strong guarantee of safety, maximum protection and unequalled performance. It allows
the insulating resistance measurement of earth circuits.
It is a portable, professional, standalone measuring instrument for use by electricians, in
order to measure the following magnitudes :
• surge arrester voltage
• insulating resistance up to 2000 MΩ under 500 V
• insulating resistance up to 200 MΩ under 100 V
• insulating resistance up to 20 MΩ under 50 V
These magnitudes can be accessed using a rotary switch.
2.1. Power supply
The discharger tester is powered by three standard 1.5 V batteries (type LR03) that provide
an endurance of about 1500 measures of five sec.
2.1.1. Self-checking of batteries :
Before carrying out a measurement campaign, it is important to check that the instrument
power supply batteries are in good condition.
- +
The TEST position of the rotary switch indicates the state of the batteries (it is
necessary to press the probe push button).
On the scale, there is an area with two different colours :
- if the needle is positioned in the black area, batteries are charged,
- if the needle is positioned in the red area, batteries are discharged. They must then be
replaced.
2.1.2. Replacing the batteries
Unplug measurement circuit test cables, put the rotary switch to the OFF
!
position and remove test cables and the discharger support unit from the
instrument.
Proceed as follows to replace the discharger tester batteries :
1. Remove the four screws from the back of the instrument.
2. Remove the lower box.
3. Replace the batteries, taking care that they are in the right direction.
4. Close the instrument.
10
DC
DC
DC
- +
TEST
Chapter II
Discharger tester