Cleaning - Chauvin Arnoux DTR 8510 Notice De Fonctionnement

The smart charger has the following features:
„ Multiple charge detection methods -dV (typical) and dT/dt.
Typically, the indication that the battery is fully charged is detected by a slight drop in its voltage (-dV). However, if the batteries
are unused for a long time, they may display the same drop in voltage in the early part of the charge cycle even if they are not
fully charged. This is a false indication. In order to prevent the termination of charge cycle due to this false indication, there is
an integral timer built in the charger which will disregard the –dV for the first minutes of the charge cycle.
The battery packs are built with a thermistor. The smart charger constantly monitors the battery pack temperature. A built-
in temperature charge control (+dT/dt) secures optimal charge.
„ Safety timer termination.
In case the batteries do not exhibit sufficient –dV/dt for the charger to detect, there is an internal safety timer which is custom-
programmed for the battery packs used in the DTR
„ Fast charging cycle.
This charge cycle supplies a maximum 900mA charge until -dV is detected.
„ Integral start timer to prevent initial, false -dV detection.
A few battery cells may have a voltage drop (-dV) in the first part of the charge cycle. This is especially true for battery cells
which have been idle for a long period of time. Because of this, a start-timer built into the charger prevents -dV detection in
the first minutes of the charger cycle.
„ Reverse polarity/short circuit protection.
The charger is protected against reverse polarity by an automatically resettable polyswitch fuse on the output.
„ LED status indicator (see Table 8-1).
„ Universal input voltage.
With the use of a proper power cord, the charger can be connected to standard AC receptacle anywhere in the world without
the need for an external transformer.
Functionality:
Charging begins when the charger is connected to the DTR
be orange before the fast charge starts. The LED will change to red when the fast charge cycle begins. When the cells are fully
charged and the voltage drops (because of the -dV signal from the cells), the charger will go into a top-off charge mode before
switching to trickle charge mode.
During the top-off charge session, the LED will be green with short, intermittent orange flashes. When the top-off charge is com-
plete, the charger will go into trickle charge mode, changing the LED color to green. The charge current is now reduced to a safe
level. However, trickle charging in excess of 12 hours on routine basis could be damaging for NiMH batteries.
If the safety timer disconnects before -dV, the top-off charge will not be engaged. The charger will then go directly to trickle
charge mode and the LED will turn green. If the battery voltage is far below normal, the charger will stop the fast charge current
and switch to trickle charge mode. The LED will then indicate an "error" by flickering green and red. The battery packs and/or
the charger may need to be replaced.
If the line power is turned off, the charger will reset and start a new charge cycle when it is turned on again.

8.2. CLEANING

Disconnect the instrument from any source of electricity.
Use a soft cloth, dampened with soapy water. Rinse with a damp cloth and dry rapidly with a dry cloth or forced air. Do not use
alcohol, solvents, or hydrocarbons.
8510.
®
8510 and the power switch is in the OFF position. The LED will
®
77