DIGITAL REFRIGERANT LEAK DETECTOR WITH PUMP USER’S MANUAL RLD400 Please read this manual carefully and thoroughly before using this product.
TABLE OF CONTENTS Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 – 4 How It Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 4 Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 What’s in the Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Setup Instructions. . . . . . . . . . . . . . . . . . . . . . . . .
WHY LOOK FOR REFRIGERANT LEAKS? There are three reasons to detect and repair leaks of refrigerant gases from stationary and mobile air conditioners, refrigeration systems and heat pumps: 1. Leaks allow air and moisture to enter an A/C system or chiller. Moisture can react with refrigerant to form corrosive acids and sludge that can damage a compressor, plug up orifice tubes, and/or eat pinholes in evaporators and condensers. 2. Refrigerant is expensive.
The digital readout makes it easy to pinpoint the source of a leak and helps you decide whether it is large enough to be worth plugging. The reading is independent of the selected sensitivity level (three are available) and is at its highest when the tip of the probe is at the source of the leak. A table in the Operating Instructions section of this manual correlates display readings with leak size, in ounces per year. The RLD400 simultaneously uses sound to help locate the source of a leak.
WHAT’S IN THE CASE The RLD400 comes fully assembled in a padded hard plastic carrying case. Also in the case are a leak test vial (for checking that the unit is performing properly), a pack of four “AA” batteries, five spare sensor filters and this user’s manual. SETUP INSTRUCTIONS INSTALL BATTERIES To install the four included “AA” batteries, Polarity Marks use a Phillips-head screwdriver to open the hinged door of the two-sided battery compartment at the bottom of the RLD400.
IMPORTANT: The startup sequence will not execute to completion if the refrigerant gas sensor cannot be heated. That would be the case if the sensor becomes electrically disconnected from the probe. The sensor (which is under the black probe tip assembly) is physically and electrically connected to the probe by a six-pin socket visible under the clear plastic near the red “refrigerant detected” LED near the end of the probe (see figure below).
The reading reflects the concentration of refrigerant gas sensed. The maximum value will be displayed when the tip of the probe is at the source of the leak. Try switching between different sensitivity levels while moving the probe until the highest number appears. To raise the sensitivity level, press the SENS. button once; this will light the red LED labeled HI. To lower the sensitivity level, press the SENS. button again; this will light the yellow LED labeled LO.
USING THE LEAK TEST VIAL The RLD400 ships with a leak test vial that lets you check whether the instrument is working properly. To perform this check: 1) Remove the leak test vial from its Ziploc plastic bag and remove the black rubber cap from the top of the vial. The cap pops off, rather than unscrews (see figure below). The first time you use the vial, you must remove and discard the circular insert under the black plastic screw-on cap with pinhole.
SPECIFICATIONS Refrigerants Detected R-134a, R-410a, R-404a, R-407c, R-507, CFC-12 (R-12 or Freon), R-22, R-1234yf Detection Modalities Sound, light, leak size measure Sensitivities 0.05 oz./yr (1.4 g/yr) for R-134a; 0.025 oz./yr (0.7g/yr) for R-22 Sensor Type Proprietary solid electrolyte semiconductor Sensor Life >300 hours (ten years’ normal use) Warmup Time 17–20 seconds Response Time Instantaneous Display Type, Size 7-segment red LED, 0.6 in. (15mm) high Dimensions of Instrument 6.8 x 2.6 x 2.2 in.
WARRANTY INFORMATION General Tools & Instruments’ (General’s) RLD400 Digital Refrigerant Leak Detector with Pump is warranted to the original purchaser to be free from defects in material and workmanship for a period of two years. Subject to certain restrictions, General will repair or replace this instrument if, after examination, the company determines it to be defective in material or workmanship.
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GENERAL TOOLS & INSTRUMENTS 80 White Street New York, NY 10013-3567 PHONE (212) 431-6100 FAX (212) 431-6499 TOLL FREE (800) 697-8665 e-mail: sales@generaltools.com www.generaltools.com RLD400 User’s Manual Specifications subject to change without notice ©2012 GENERAL TOOLS & INSTRUMENTS NOTICE - WE ARE NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS.
