Owner's Manual
3
Before you use the unit the first time . . .
1. Remove the sticky-label disc from the 
cap of the Calibration Reference Bottle. 
This disc can be reused to help seal the 
vial when the leak detector is not in use, 
or it can be discarded. DO NOT attempt 
to unscrew the cap, you may damage the 
bottle! It is filled with enough refrigerant 
to last approximately six months.
2. With the Power switch in the OFF posi-
tion, charge the internal battery using the 
furnished wall adapter. Charge time is 
8–10 hours or, until the red Full Charge 
LED turns green.
Adjusting the Sensitivity
 Set the Leak Size switch as follows:
  SMALL switch position is the highest sen-
sitivity. The unit will indicate 0.1 ounce or 
greater leak rates and is used for fluorine 
based gases like R134a and SF6. This posi-
tion also assures highest repeatability for 
locating 0.5 ounce or greater R134a leaks 
(per SAE Std. J1627 moving probe test con-
ditions). It must always be used to verify 
performance and calibration when using the 
Calibration Reference Bottle.
 MEDIUM switch position is used for 
chlorine and chlorine based gases like R12, 
R22, R123, etc. and will indicate a 0.1 
ounce per year or greater leak rate. This 
position supports finding a 0.5 ounce or 
greater leak during the moving probe test as 
defined in SAE J1627. It is also useful for 
locating larger R134a leaks of one ounce or 
greater.
 LARGE switch position is used to zero 
in on large leaks of any refrigerant. If a 
large leak is suspected, switch unit to its 
Manual mode. Adjust the Manual Balance 
control for 2-3 ticks per second and slowly 










