eL-520 Refrigerant Gas Leak Detector User’s Guide
eL-520 User’s Guide Congratulations on the purchase of the AccuTools™ eL-520 Refrigerant Gas Leak Detector, the most technologically advanced of its kind. The eL-520’s low power requirements, small size and high sensitivity combine to create a tool which is easy to handle and ultra effective at locating even the most difficult-to-find leaks. Fully SAE J1627 compliant, the eL-520 will detect leaks as small as 0.1 oz/yr (3g/year) in R12, R22, R134a and other halogen refrigerant systems.
eL-520 User’s Guide INSTRUCTIONS 1. Press the button to turn the unit on. 2. The LED will flash orange for a short moment to indicate auto-reset, afterwards the unit will begin beeping and flashing green. 3. To reset the unit to the existing level of ambient refrigerant, press and release the button. The LED will flash orange briefly to indicate the reset. All levels of refrigerant less than the reset level will be ignored. 4. Unit turns on in the low sensitivity level, which is adequate for most leaks.
eL-520 User’s Guide FEATURES Ÿ If the sensor is damaged, a sweeping alarm and a red-green flash will indicate the problem. Ÿ A flashing LED during normal operation also reflects the battery level: Green: Orange: batteries are fresh batteries should be changed • If the batteries are nearly empty, the LED will turn solid red and a two-tone alarm will be noted for 5 seconds, before the eL-520 will power itself off.
eL-520 User’s Guide SENSOR An eL-520 sensor will last between 25 and 30 hours of continuous use. A failed or failing sensor will be indicated in one of the following ways: 1. Unstable or erratic operation of the unit and many false alarms, even in pure air. 2. A continuous “siren” sound. SENSOR REPLACEMENT In either case, replacement of the sensor is necessary: 1. 2. 3. 4. 5. Turn the power off. Locate the replacement sensor in the battery compartment.
eL-520 User’s Guide SAE J1628 RECOMMENDED PROCEDURES For the purpose of Automotive A/C Testing with respect to the SAE J1627 standard, the following leak testing procedure applies: 1. Operate the eL-520 in high sensitivity mode. 2. Leak test with the engine not in operation. 3. The air conditioning system shall be charged with sufficient refrigerant to have a gauge pressure of at least 340 kPa when not in operation.
eL-520 User’s Guide 7. At each area checked, the probe shall be moved around the location, at a rate no more than 25-50 mm/s and no more than 5 mm from the surface completely around the position. Slower and closer movement of the probe often helps locate the exact position of the leak. 8. An apparent leak shall be verified at least once by blowing shop air into the area of the suspected leak, if necessary, and repeating the check of the area.
eL-520 User’s Guide NOTES 7
eL-520 User’s Guide NOTES 8
eL-520 User’s Guide Warranty and Repair 1 Year Limited Warranty Core Enterprises, Inc. warrants that this AccuTools™ product conforms to Core Enterprises, Inc. published specifications and will be free from defects in material and workmanship. The duration is for a period of one year from the date of purchase. Core Enterprises, Inc., at its option, will repair or replace this product or any component of the product found to be defective during the warranty period.
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