Battery Replacement Procedure - Intoximeters Alco-Sensor FST Operator's Manual

L. It is essential to verify the calibration. Use a new mouthpiece and an approved gas standard. THE
RESULT SHOULD BE WITHIN ± .003 OF THE EXPECTED VALUE OF THE STANDARD GAS
READING.
M. If this Accuracy Check does not produce a result within + .003 of the standards target value repeat the
calibration procedure after waiting several minutes.

Battery Replacement Procedure

The batteries will need to be replaced when the displayed battery icon indicates the battery is out of power. The
BAT
display shows or there is not enough power to power the instrument
To replace the batteries follow these instructions.
Caution
 When changing batteries always replace both batteries and never mix battery types.
 When installing batteries, the proper polarity, or direction, must be observed. (On both the
 inside of the case and on the circuit board in the battery compartment there is a guide for
 proper polarity or direction).

 In addition, some ASFSTs have a battery cover with the proper polarity displayed on the
outside of the battery cover. If your ASFST is equipped with this style battery cover you can
also use it to verify that the batteries have been installed correctly.

After replacing the batteries, always power the instrument ON to verify proper installation –
if the ASFST does not power ON immediately remove the batteries and reinstall correctly
or replace with a new set.
Remove the optional rubberized grip (if the ASFST is equipped with this option)
Slide BATTERY DOOR open.
Remove both BATTERIES.
Insert two new BATTERIES.
(Note the + and – labels within the battery compartment to insert the batteries properly)
Close BATTERY DOOR.
Replace rubberized grip
ADMINISTRATIVE / MAINTENANCE FUNCTIONS
ON
.
Alco-Sensor FST Operator Manual, Page 27 of 33, 11/30/2017