Testing The Charging System - Telwin DTS700 Manual De Instrucciones

Selecting the Battery
Selecting the battery type: use the cursor
buttons ▲ ▼ (Diag. A-3) to select the battery:
- SEAL (VRLA/GEL/AGM
maintenance-free batteries).
Or
- SLI (WET Standard batteries).
Press "Enter" to confirm the setting.
Selecting Reference Standards
- Use the cursor buttons ▲ ▼ to select the
reference standard used by the battery
manufacturer: EN, IEC, DIN, SAE or CA
(MCA).
The Standard acronym or CA (MCA) value is
normally indicated on the battery unit.
Press "Enter" to confirm the setting.
Selecting CCA or CA values
- Use the cursor buttons ▲ ▼ to select the
CCA or CA value indicated by the battery
manufacturer.
NOTE:
CCA = Cold Cranking Amps; i.e. the cold
start current.
The CCA value is generally indicated in
Amperes by the manufacturer on the
battery unit: e.g. 520A (EN).
CA = Cranking Amps or MCA (Marine
Cranking Amps); i.e. the "Battery Council
International" Standard starter current.
Battery test
- Press "Enter" to start the test: the word
"TEST" will appear on the display.
N.B:
"CHA-" may appear on the display to
ask whether or not the battery has been
charged: press "Enter" and select either
YES / NO using the cursors ▲ ▼. Press
"Enter" again to confirm the setting.
- At the end of the test, the display will show
the actual starter current in amps (A) and
the test result using the various indicator
LEDs ((Diag. A-2 and A-5) whose meanings
can be seen below:
GREEN LED
-
on: the battery is good and fully
charged.
GREEN and YELLOW LEDs
- /
on: the battery is good but needs
charging.
YELLOW and RED LEDs
- /
on: the battery is low and its conditions
cannot be assessed. Charge the battery
and try again.
type sealed
Disconnect the clamps when the test has
been completed.
TESTING THE STARTER SYSTEM
- Disconnect all the vehicle's electrical loads:
- Connect the red clamp (+) to the positive
- Press "Enter" (Diag. A-4) and select "Syst"
- Press "Enter": the word "CrAn" will appear
- Press "Enter":
- Start the vehicle then read the voltage

TESTING THE CHARGING SYSTEM

- On completing the test (see paragraph
- Press "Enter" to confirm and increase the
4
RED LED
-
on: the battery is unable to keep
its charge status, or a cell has short-
circuited and
immediately.
ERROR LED
-
on: the clamps are not connected
correctly or the CCA value of the battery
being tested exceeds the instrument's
maximum allowed value.
e.g.: turn off the lights, disconnect all
accessories, and close the doors including
the boot.
battery terminal, and the black clamp (-)
to the negative terminal. The display will
switch on showing the no-load battery
voltage.
using the cursors ▲ ▼ (Diag. A-3) to test
the starter system.
on the display.
the tester will read the
minimum voltage value reached by the
battery.
detected by the tester:
A. If voltage is over 7.2V, the GREEN LED
will light up: Starter system = OK.
B. If voltage is between 7.2V and 5.8V, the
YELLOW LED will light up: Starter system
= Poor. Check the system components
(starter motor, connections, undersized
battery etc..).
C. If voltage is under 5.8V, the RED LED will
light up: Starter system = Low. Promptly
check the system components (starter
motor, connections, undersized battery
etc..).
above) and with the vehicle still running,
press "Enter": the word "CHAr" will appear
on the display.
engine speed to 1200 ÷ 1500 rpm and read
the voltage recorded by the tester while
the vehicle is running:
A. If voltage is between 13.4V and 14.6V,
the GREEN LED will light up: the
charging system is OK.
B. If voltage is over 14.6V, the RED LED will
light up: the charge voltage is too high,
check the voltage regulator.
needs replacing