Imperial LD900 Скачать руководство пользователя страница 3

LEAK SIZE INDICATOR

The digital leak size indicator remains off normally but once a leak is detected, a 
number from 1-9 will be displayed for all HFC and HCFC refrigerants regardless of 
the sensitivity setting. 

The number will continue to increase or decrease depending on the amount of 
refrigerant sensed. The maximum value will be displayed once the leak source has 
been located. The table below can be used to approximate the size of leak:

Maximum #  

Approx. Leak Size 

Approx. Leak Size 

Displayed 

(oz/yr) 

 (g/yr)

1 -3 

< 0.1 

<3 

4-6 

0.1 to 0.5 

3 to 14

7-9 >0.5 

>14

LOW BATTERY INDICATOR

Replace the 4 AA Alkaline batteries when the red LED on the control panel is lit. 
Follow battery installation instructions under 

Maintenance

 section.

AUDIO MUTE FUNCTION

To silence or mute the audio beep and alarm signal, press the MUTE button. 
To restore the audio sound, press the MUTE button again. (Note: a few seconds  
is required to restore sound if the mute button is pressed in rapid succession.)

ADJUSTING SENSITIVITY LEVELS

The leak detector will default to the NORM sensitivity level automatically once the 
unit comes out of the warm up cycle and the green LED will turn on. 

To change sensitivity levels, press the SENS once for HI sensitivity (red LED will 
turn on) and again for LO sensitivity (yellow LED will turn on).

LEAK TEST VIAL

The leak detector comes with a Leak Test Vial that allows the user to make sure 
the detector is performing properly. To test:

1. Remove the colored label dot 

in the center of the screw cap to expose the 

vent hole in the top of the screw cap. (see fig. below). 

2. Turn on the leak detector 

and allow the instrument to complete the warm 

up cycle. 

3. Place the sensor close to the small hole

 in the top of the Leak Test Vial. 

The beep rate should increase and the Digital Leak Size Indicator should display a 
number from 3-6 indicating that the sensor and the electronics are working properly. 

NOTE:

 Replace the Test Vial back in the nylon bag when not in use to extend the 

shelf life. Replace Test Vial when the green color is less than ¼ full or at the time of 
the expiration date.

Remove label dot over 

vent hole before testing

Vial cap with vent hole

Expiration date on label

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LeakDetectors-LD900-UserManual.indd   4-5

12/7/16   1:08 PM

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