Alcolock L Service Manual - Page 6

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1. Troubleshooting

CALIBRATING A HANDSET

Power the handset on by holding down either the right or left button.

Access the Menu by pressing and holding the left button. Scroll through the menu and select

System Maintenance. The four digit code which is provided with the L OEM accesses this

menu.

Enter the code and move the cursor to OK? when finished. Push the right button to Select.

This enters the Service menu.

Scroll through the Service menu and press select Calibration.

The current handset Date/Time is displayed. To proceed, select OK with the right button. This

enters the Select Type menu.

NOTE! If a tachograph is installed the date/time cannot be changed.

The Select type menu contains the calibration options. Scroll to Dry Gas and push the right

button to Select. This enters the Select value menu.

The Select value menu contains the gas standard concentration options. Verify that 130PPM

is on the canister label, and use the left button to scroll to 130PPM. Push the right button to

Select. This enters the Altitude menu.

The Altitude menu contains the altitude correction factor. Verify the altitude value using the

altitude reference guide, which is on the last page of this guide. The left button increases in

increments of 200 meters. Press the right button to Accept.

A Wait message is displayed followed by a 2:00 minute warm-up. The handset is ready for

calibration when the TURN ON GAS message is displayed.

10.

Insert the delivery tube from the regulator valve into the mouthpiece port. Keep holding the

handset as the delivery tube is rigid.

11.

Press the valve down to release the gas while keeping

hold of the handset (see figure). The handset analyzes

the gas standard and displays a Blowing... message

followed by an Analyzing message.

Continue holding the valve down until the handset clicks

and then beeps, indicating that the test is complete.

12.

The handset analyzes the test, which is followed by a

Wait message and 0:45 second countdown. The handset

is ready for the second sample when the TURN ON GAS

message is displayed.

Depending on the sensor calibration drift, up to 4 samples may be required.

• If only 2 tests are required, a Verification OK message is displayed when thecalibration

is complete

• If 3 or 4 tests are required, a Calibration OK message is displayed when calibration is

complete

13.

Press the right button to Finish (there is also the option to retry by pressing the left button).

Calibration is complete.

The L OEM handset returns to ready state and Blow for 5 seconds is displayed.

NOTE! If the calibration fails on numerous attempts, the sensor may need

replacement. Contact ACS for return instructions.

ALCOLOCK L OEM