Switch with FUEL engine cranking
Code 725A
Description of basic functions
English
Safety device
BUTTON
YELLOW LED TWO-COLOUR
RED/GREEN LED
3 GREEN LEDS
G 1/4 2/4 3/4 4/4 o B
• Use on injection vehicles with electronic reduction gear
• Reprogrammable:
- Can be set with fuel cranking and changeover during DECELERATION (default setting)
or changeover during ACCELERATION
- Possibility to be used with different sensor types:
- A.E.B.
- 0÷4700 Ohm
- 0÷90 Ohm
- RESERVE
- Rev reference for the modifi able changeover
NOTE: if the switch is installed on a vehicle having the Timing Advance Processor
code 549N, it is necessary to connect the BROWN switch wire to the BLACK
Timing Advance Processor wire.
• Built-in Safety-Car device for enabling the GAS solenoid valves only with the engine
running, activates automatic GAS delivery blocking within 1 second from the accidental
switching off of the engine.
Installation
• Can be installed using the support bracket included in the package
• Can be installed fl ush-mounted in the dashboard using the heat cutter (to be requested
separately)
NOTE: The switch is supplied without sensors, so in order to get indication of
the fuel level you have to request the relevant sensor (METHANE or LPG) separately.
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General Warnings
Technical Characteristics
Power supply voltage 1 0÷16 VDC
GAS output (BLUE wire) rated current 5 A max.
FUEL output (YELLOW wire) rated current 5 A max.
Fuse compliant with DIN 72581 5 A max.
Switch box overall dimensions 24 mm height
77 mm depth
35 mm width
The product is compliant with the following regulations: R 67/01 regulations
R 110/00 regulations
directive 2006/28/EC
Package Contents
The package contains:
1 switch
1 switch fi xing bracket
1 bag of accessories, with wiring harness, fuse, fuse holder and small parts
1 assembly instruction manual
This manual can be modifi ed at any time in order to be updated with all technological,
quality and information changes or improvements
In order to avoid switch malfunctions:
- Lay the switch wires as far as possible from the high voltage cables.
- Make good electrical connections without using cable clamps.
Remember that the best electrical connection is duly insulated soldering.
- Do not replace the 5A fuse with fuses of higher amperage or non-compliant
with the DIN 72581 standards. This can cause irreparable damage.
- Do not open the switch box for any reason whatsoever, especially with the engine
running or with the panel on.
The manufacturer declines all responsibility for damages to things and injuries
to people caused by unauthorised personnel tampering with the device and by
non-observance of the warnings.
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ASSEMBLY DIAGRAM
( * ) CONNECT TO THE REVOLUTION COUNTER OR TO THE COIL NEGATIVE POLE
WHITE
BLACK RED BLUE YELLOW
GROUND + 12 VOLT
IGNITION
GAS SOLENOID VALVES
FUSE
MAX 5 A
GREEN
GROUND
A.E.B. STANDARD SENSOR
A.E.B. STANDARD SENSOR TYPE
1050 AND RESERVE TYPE 1051
( ∗ ) BROWN
GROUND
GROUND
GREEN
WHITE
WHITE
WHITE
GREEN DO NOT CONNECT
0÷4700 OHM STANDARD SENSOR
WHITE
GREEN
GROUND
0÷90 OHM STANDARD SENSOR
GREEN DO NOT CONNECT
+12 VOLT OUTPUT
PETROL MODE
WARNING:
IF YOU INSTALL
AN EMULATOR OR
ATYMING RELAY
DO NOT CONNECT
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1. Make sure the switch is connected and the key is positioned on OFF.
2. Keep the button on the switch pressed down.
3. Turn the ignition key to ON and start the vehicle.
4. Two-colour LED (Red/Green) blinking.
5. Keep the button pressed down until the LED blinks Red only
6. Release the button; the LED now blinks Green.
TYPE OF LEVEL SENSOR PROGRAMMING:
1. Press the button several times until you get the desired level sensor
programming.
• YELLOW LED ON: A.E.B. sensor
• 1/4 GREEN LED ON: 0÷4700 Ohm sensor
• 2/4 GREEN LED ON: 0÷90 Ohm sensor
• 3/4 GREEN LED ON: RESERVE sensor
2. Keep the button pressed for 3 seconds in order to save and go on
to the next setting.
Programming
English
G 4/4
G 4/4
G B
4/4 o B
TYPE OF CHANGEOVER PROGRAMMING (ACCELERATION/DECELERATION)
1. Two-colour LED with GREEN on.
2. Press the button until you get the desired programming.
• YELLOW LED ON: Switch programmed to change over during
DECELERATION
• 1/4 GREEN LED ON: Switch programmed to change over during
ACCELERATION
3. Keep the button pressed for 3 seconds in order to save and go on
to the next setting.
REV REFERENCE FOR CHANGEOVER PROGRAMMING
1. Two-colour LED with RED on.
2. Run the engine at the desired rpm level (800-1200) while keeping
this value constant.
3. Press the button once to store the engine rpm threshold as reference;
every time the button is pressed, the engine rpm (provided they are
not null) are store as a new reference for the changeover.
4. Take the engine to idle speed while checking the status of the
YELLOW LED.
• YELLOW LED BLINKING: Engine rpm lower than reference
• YELLOW LED ON: Engine rpm higher than reference
5. Keep the button pressed for 3 seconds until the two-colour LED
blinks RED/GREEN.
6. Turn the ignition key to OFF.
NOTE: The steps listed above must be followed in sequence in
order to complete programming correctly.
G B
1/4 4/4
4/4 o B
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Operation
• YELLOW LED blinking:
• GREEN LEDs indicate the quantity of GAS
• Changeover from FUEL to GAS during DECELERATION after the
set rpm has been passed
• YELLOW LED blinking:
• GREEN LEDs indicate the quantity of GAS (if in reserve, there is
only the yellow LED indication)
• Changeover from FUEL to GAS during acceleration after the set
rpm has been passed
FUEL OPERATION
• TWO-COLOUR LED with RED on.
EMERGENCY FUNCTION
(the vehicle starts directly with GAS)
• Insert the sub key without starting the vehicle
- Keep the button pressed for 3 seconds
- YELLOW LED
• GREEN LEDs indicate the quantity of GAS (if in reserve, there is
only the yellow LED indication)
• Start the vehicle, and it will start directly with GAS
NOTE: if the switch has been programmed to operate with
a RESERVE sensor, only the YELLOW and 1/4 GREEN LEDs
will turn on.
English
G 1/4
G 1/4 2/4 3/4 4/4
G 1/4 2/4 3/4 4/4
PROGRAMMED AS FUEL CRANKING WITH AUTOMATIC CHANGEOVER TO GAS
DURING DECELERATION
PROGRAMMED AS FUEL CRANKING WITH AUTOMATIC CHANGEOVER TO GAS
DURING ACCELERATION
Operation changes over from GAS to FUEL and vice versa every time the button is pressed
GAS OPERATION
B
G 1/4 2/4 3/4 4/4
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