TIF ACL2000 Refrigerant Leak Detector - Manual (Page 6)

Constant Power Indication
The Constant Power indicator allows the user to see the battery level at all times.
ACL1000 - The Red LED will remain on whenever the unit is powered on. If the
LED is dim, or is not lit, this is an indication that the batteries should be replaced.
ACL2000 - The first LED (leftmost) in the bargraph will remain on whenever the
unit is powered on. If the LED is dim, or is not lit, this is an indication that the
batteries should be replaced.
Automatic Circuit/Reset Feature
Both detectors feature an Automatic circuit that sets the unit to ignore ambient con-
centrations of refrigerant. The ACL2000 additionally features a Reset
function key for convenience.
• Automatic Circuit - Upon initial power on, the unit automatically sets itself to
ignore the level of refrigerant present at the tip. Only a level, or concentration,
greater than this will cause an alarm.
CAUTION: Be aware that this feature will cause the unit to ignore any refrigerant
present at turn on. In other words, with the unit off if you place the tip up to a
known leak and switch the unit on, no leak will be indicated!
• Reset Feature - Resetting the unit during operation performs a similar function, it
programs the circuit to ignore the level of refrigerant present at the tip. This
allows the user to 'home-in' on the source of the leak (higher concentration).
Similarly, the unit can be moved to fresh air and reset for maximum sensitivity.
Resetting the unit with no refrigerant present (fresh air) causes any level above
zero to be detected.
To Reset the unit:
ACL1000 - Switch the unit OFF and back ON again
ACL2000 - Press the RESET key. Whenever the unit is reset, all LED's will light for
1 second. This provides a visual confirmation of the reset action.
Sensitivity Adjustment (ACL2000 Only)
The ACL2000 provides two levels of sensitivity. The base beeping tone is an
indication of sensitivity level; the quicker beep rate indicates a higher level. When
the unit is switched on, it is set to the high sensitivity position.
1. To change the sensitivity, press the LO key. When the key is pressed, the visual
display will momentarily show the four left LED's red. The base beep rate will
slow, indicating Low Sensitivity level.
2. To switch back to High Sensitivity, press the HI key. The three right LED's will
light momentarily, and the base beep rate quickens.
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OPERATING FEATURES