Bacharach H-10PM Manual - Adjusting The Sensitivity
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