Leak Detection Procedure - Refco Co2-Locator Bedienungsanleitung

Low will make it easier to find the exact point of the leak.
5. Reset the sensitivity switch to High before searching for
additional leaks.
6. When you have finished leak-testing, turn off the instrument
and store it in a clean place, protect the leak detector from
possible damage.
7.3

Leak Detection Procedure

Press and hold the ON/OFF button for one second. The warp-

up and calibration sequence takes approximately 45 seconds.
The sensitivity level defaults to medium at startup.
The most likely place for a CO2 refrigerant leak is at soldered

joints in refrigerant lines and changes in cross section or
direction of these lines. The detect changes in concentration of
CO2 refrigerant, not the absolute concentration of CO2
refrigerant. This makes the detection of leaking locations
possible with the CO2 refrigerant in the air. Use the following
„double pass" procedure to find leaks by detecting the change
in CO2 refrigerant concentration.
1. Charge the system with sufficient CO2 refrigerant. Tum the
system on and force compressor to operate. This could set the
high-pressure end of the circulation ring to its operating
pressure. Turn the system off for safer test Operation and less
interference.
2. Visually trace the entire CO2 refrigerant system and look for
signs of air conditioning lubricant leakage, damage and
corrosion on all lines, hoses and components. During this
larger leakage finding process, use the medium sensitivity
range.
12 Instruction Manual