Heated Diode Refrigerant Leak Detector Operation and Maintenance Instructions Model LDHD250
TABLE OF CONTENTS Introduction.......................................................................................................... 3 Key Features......................................................................................................... 4 Safety...................................................................................................................... 5 Leak Detector Components............................................................................ 6 Features...............
INTRODUCTION The hilmor Heated Diode Leak Detector offers the greatest sensitivity and fastest response of any portable refrigerant detector available. This is achieved through the use of a highly sensitive semi-conductive sensor combined with a sophisticated microprocessor-controlled circuit. In addition to the superior performance and functional advantages, it offers a uniquely designed ergonomic shape to provide greater ease of use and comfort.
KEY FEATURES ADDED CONVENIENCE • Audible and visual notification for leak detection. EASY TO READ • LED screen for easy to read display. ADDED VERSATILITY • Works on all halogenated refrigerants. SMALL SPACE CAPABLE • Flexible probe allows access to the hard-to-reach areas.
SAFETY SAFETY PRECAUTIONS To prevent personal injury, please read the operating manual carefully and operate only as instructed by following the guidelines listed below. 1. Wear safety glasses, gloves and all other recommended safety gear when working with refrigerants. Contact with refrigerants may cause injury. Please see any warnings associated with refrigerants. 2. Avoid the inhalation of refrigerant. High concentrations of refrigerants are harmful to humans and can cause serious injury. 3.
LEAK DETECTOR COMPONENTS 1 ON/OFF Button 2 SENS Button 3 RESET Button 4 MUTE Button 5 Panel Display 6 Sensor (Inside Probe Tip) 7 Flexible Probe 7 6 10 9 8 5 3 4 FIG. 1 14 11 12 13 FIG.
FEATURES FUNCTIONS AND FEATURES The product is easy to operate and simplifies the user interface. Please refer to FIG. 1 to familiarize yourself with the indicators and keypad controls as you proceed through this section. BATTERY VOLTAGE INDICATOR The Battery Voltage Indicator allows the user to see the battery level. If the indicator is off, the batteries are in full power; If the indicator is on, the batteries have enough voltage for operation; If the indicator is flashing rapidly, replace the batteries.
FEATURES (CONT.) AUDIBLE / VISUAL ALARMS – MUTE FEATURE The unit features two notification indications – an internal speaker audible alarm and LED screen data visual alarm. When a leak is detected the LED screen displays the leakage level. When the device is powered ON, the audible indication is deactivated by default. The audible alarm may be enabled by pressing the MUTE button, allowing the audible as well as visual indication. Press the MUTE button again to disable the audible alarm.
OPERATING INSTRUCTIONS Keep the device away from moisture and high voltages. To detect leakage in a system, the system must operate at a minimum of 50 PSI. Environmental temperatures lower than 59°F (15°C) may further reduce a system’s operating pressure, causing a leak to become more difficult to detect. In such cases, “No Leak” may be falsely indicated, requiring an alternate diagnostic means. 1. Turn on the unit by pressing and holding for 2 seconds then release ON/OFF button. 2.
OPERATING INSTRUCTIONS (CONT.) 7. If notification occurs before the leak source is pinpointed, the RESET button may be used to pinpoint the leak, as described in the Automatic Circuit/Reset Feature section, page 7. The unit may be reset as many times as necessary to pinpoint the leak source. It is suggested to wait for about five (5) seconds to detect the leakage after pressing RESET.
TECHNICAL SPECIFICATIONS Sensor Type: Semi-Conductive Sensor (Heated Diode) Sensor Life: 5 years (typical) Maximum Sensitivity: 4 grams/year Response Time: ~3 seconds Warm-Up Time: ~30 seconds Operating Environment: 32°F (0°C) to 104°F (40°C) at <75%RH (non-condensing) Display Method: LED Display Notification Mode: LED Display and Audio Battery: 3 1.
hilmor.
