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MANUALS / OPERATING INSTRUCTIONS

AST-301 OPERATING MANUAL


1. GETTING STARTED

• Remove the four screws attaching the top to the plastic housing.
• Carefully remove the top cover.
• Insert two AA size batteries in the holder.

WARNING! Be careful when inserting or replacing the batteries. Pay great attention to appropriate polarity. Irreversible damage may be done by inserting the batteries with wrong polarity. Pay attention to the "+" and "-" signs.

• Put the cover back and fasten the screws.

2. TURNING THE DEVICE ON AND OFF

• Turning on: press the two buttons at the same time and keep them pressed for approximately 5 seconds. The welcome screen appears.



Immediately after the welcome screen, the countdown screen appears, showing the last value that has been set.



Now the device is in stand-by mode, where you have 3 options. You can

1) start the countdown (activate the "bomb"),
2) go to programming mode or
3) turn the device off.

• Turning off: start pressing either of the buttons and a little later press the other one and keep them both pressed for a few seconds.

NOTE: After the device has been set to stand-by mode, it remains in this state for 60 minutes, then turns off (goes to sleep mode).

NOTE: In stand-by mode, regardless to the economy function setting, the screen will go blank after 15 seconds, but it can be brough back by pressing either of the buttons.

3. STARTING THE COUNTDOWN (ACTIVATING)

• Set the device to stand-by mode.
• Press the left button and keep it pressed until the countdown begins. While pressing the button, the following screen will appear:



After successful (uninterrupted) activating, the countdown begins.

NOTE: If the economy function is turned on, the numbers indicating countdown disappear from the screen after 15 seconds and only the two dots blink every second.



NOTE: By default, countdown is accompanied by a beep sound every second. You can turn this function off in programming mode.

4. STOPPING THE COUNTDOWN (DEFUSING)

• Press the left button and keep it pressed until the countdown stops. You will have to keep the button pressed for as long as what value has been set in programming mode. While pressing the button, the following screen will appear:



If defusing time has been set to more than 5 seconds, after the text "defusing" has scrolled, the screen will switch to countdown (showing how much more you have to keep the button pressed to defuse the device).



NOTE: If defusing is interrupted, you will have to start it all over again.

If you have been successful, the following screen appears (and the device start beeping twice at a time):



• Press either of the buttons and keep it pressed for 5 seconds to go back to stand-by mode.

If you fail to stop the countdown (defuse the "bomb") in time, it will go off ("explode"). This is indicated by rapid beeping and the following screen:



After the "bomb" has gone off, the device remains in this state for 60 minutes more, then turns off.

• Press either of the buttons and keep it pressed for 5 seconds to go back to stand-by mode.

5. PROGRAMMING MODE

• Set the device to stand-by mode.
• Press the right button and keep it pressed until you enter programming mode. While pressing the button, the following screen will appear:



5.1. Setting countdown time



• Press the left button to set the desired value. You can set the countdown time between 1 and 99 minutes with the following increments:

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95 and 99.

NOTE: If you press the left button and keep it pressed, the possible values will start rolling in the above order.

• Press the right button to finish setting the countdown time. (The menu jumps to the next setting option.)

5.2. Setting defusing time



• Press the left button to set the desired value. You can set the defusing time between 5 and 30 seconds with the following increments:

5, 7, 10, 12, 15, 20, 25 and 30.

NOTE: If you press the left button and keep it pressed, the possible values will start rolling in the above order.

• Press the right button to finish setting the defusing time. (The menu jumps to the next setting option.)

5.3. Setting the sounds

• Press the left button to select between the sound options. You have the following options:

beep turned on upon "explosion", after defusing and during countdown

beep turned off completely

beep turned on during countdown

beep turned on after defusing

beep turned on after defusing and during countdown

beep turned on upon "explosion" (timer mode)

beep turned on upon "explosion" and during countdown

beep turned on upon "explosion" and after defusing

• Press the right button to finish setting the sounds. (The menu jumps to the next setting option.)

5.4. Setting the display economy function



• Press the left button to set the economy on.



Economy function means that, in order to save battery power, the screen goes blank after 15 seconds during countdown, but the numbers can temporarily be brought back if you press either of the buttons.

NOTE: If the screen reads "d", the economy function is turned off, while if the screen reads "_", the economy function is turned on.

• Press the right button to finish setting the economy function. The device goes back to stand-by mode.

NOTE: In programming mode, if neither of the buttons is pressed for 1 minute, the device will turn off (go to sleep mode) in order to save battery power. This is normal operation of the device. If this happens, changes in the software that might have been made after entering the programming mode will not be saved.

6. MEASURING BATTERY VOLTAGE

• Set the device to stand-by mode.
• Press the right button once.

(indicating 2.4 volts)

NOTE: The device can be operated safely as long as the voltage is higher than 2.3 volts.

• Press the left button to go back to stand-by mode.

7. MAINTENANCE

The device needs no particular maintenance. However, it is recommended to pay attention to the batteries and replace them if necessary.

8. TROUBLESHOOTING

If you should experience something extraordinary compared to what is written above, first, you should try disconnecting the batteries (unplugging the wire of the battery holder) or, if it still does not work, short-circuit the pins of the battery connector on the mainboard (PCB) to reset the device. Also, make sure that the batteries you are using have not been depleted. (Replace them if necessary.)

If you cannot turn the device on and have tried the two methods mentioned, check if the connections at the bottom side of the buttons are appropriate. If they seem ruined (for any reason), ask a professional for help in repairing them. Some welding may be necessary. (Reparing the connections at the buttons will NOT void the warranty.)

If you happen to face a kind of problem that does not seem to be able to be solved by the above, contact us at support@mofra.eu.

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