Manuals - OMEGA Engineering
Contents
1. end first and the other two in the left compartment end first To help you do this correctly there are and polarity marks on the hinged door see figure at right Be sure each mark ends up next to the corresponding terminal of a battery OPERATING INSTRUCTIONS All of the HHLT 2 s controls and indicators are on the front panel En Digital leak size Familiarize yourself with the names and Indicator positions of the controls and indicators shown below before moving on to the Low battery indicator Setup Instructions and Operating red LED Instructions Leak Size STARTING UP eo Low Battery Sensitivity level LEDs Before the HHLT 2 can be used to detect yellow green red refrigerant leaks it must execute the following three step startup sequence Beeper mute and 1 TURN ON Press the Fl button to ue ses A sensitivity buttons power on the unit 2 WARM UP Once the unit has been powered on it will automatically begin heating the sensor During warmup 1 the digital leak size indicator flashes 0 2 the yellow red and green sensitivity LEDs illuminate in sequence and 3 the beeper sounds repeatedly at a rate of three beeps every two seconds To silence the beep press the Mute button The warmup cycle normally takes 17 20 seconds 3 READY The HHLT 2 is ready to search for leaks when 1 the display stops flashing 0 and goes dark 2 the green LED indicating NORM sensitivity the default level2. lights up and 3 you hear and feel the internal pump start up LO NORM HI O lt Power on off button 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 If the startup sequence fails to complete after 60 seconds abort the process by powering off the unit Then check the integrity of the connection between the sensor and the probe by doing the following 1 Pull the black probe tip assembly straight out and away from the sensor socket without twisting it This disconnects the sensor 2 Line up the keyway notch on the probe tip assembly with the raised keyway on the sensor socket holder 3 Carefully push the sensor back into the socket without forcing or twisting it misalignment can damage the sensor s pins This reconnects the sensor Push straight on do not Unscrew tip tO fiter twist to install sensor _ Keyway alignment replace filter Sensor socket and red refrigerant Pull straight out do not detected LED twist to remove sensor CHECKING FOR LEAKS Position the end of the HHLT 2 s flexible obedient pr
3. reproduced translated or reduced to any electronic medium or machine readable form in whole or in part without the prior written consent of OMEGA ENGINEERING INC Where Do I Find Everything I Need for Process Measurement and Control OMEGA Of Course Shop online at omega com TEMPERATURE 4 Thermocouple RTD amp Thermistor Probes Connectors Panels amp Assemblies lA Wire Thermocouple RTD amp Thermistor lA Calibrators amp Ice Point References lA Recorders Controllers amp Process Monitors A Infrared Pyrometers PRESSURE STRAIN AND FORCE l Transducers amp Strain Gages 4 Load Cells amp Pressure Gages lA Displacement Transducers l Instrumentation amp Accessories FLOW LEVEL l Rotameters Gas Mass Flowmeters amp Flow Computers WY Air Velocity Indicators 4 Turbine Paddlewheel Systems lA Totalizers amp Batch Controllers pH CONDUCTIVITY LY pH Electrodes Testers amp Accessories 4 Benchtop Laboratory Meters l Controllers Calibrators Simulators amp Pumps LY Industrial pH amp Conductivity Equipment DATA ACQUISITION lA Data Acquisition amp Engineering Software 4 Communications Based Acquisition Systems l Plug in Cards for Apple IBM amp Compatibles l Data Logging Systems lA Recorders Printers amp Plotters HEATERS l Heating Cable l Cartridge amp Strip Heaters 4 Immersion amp Band Heaters 4 Flexible Heaters l Laboratory Heaters ENVIR
4. 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 HHLT 2 simultaneously uses sound to help locate the source of a leak Whenever the unit is on it continuously produces three very loud beeps every two seconds When a leak is detected the frequency of the beeping increases dramatically The beeper can be muted by pressing a dedicated button on the front panel A third feature of the HHLT 2 that helps locate leaks is a red LED adjacent to the sensor at the end of the probe This light flashes in sync with the beep In other words it flashes three times every two seconds whenever the unit is on and much faster whenever the unit detects refrigerant When the red LED begins to flash rapidly your eye will naturally be drawn to it and therefore the location of the leak Like the leak size readout the LED at the end of the probe is bright enough to be visible in full sunlight The HHLT 2 automatically compensates for ambient levels of refrigerant gas No manual sensitivity adjustments or power adjustments are required The instrument is supplied with a proprietary leak test vial that lets you verify that it is working properly prior to searching for a leak The HHLT 2 is powered by four AA batteries which are included
5. ONMENTAL MONITORING AND CONTROL lt Metering amp Control Instrumentation lt Refractometers LY Pumps amp Tubing lA Air Soil amp Water Monitors WY Industrial Water amp Wastewater Treatment lA pH Conductivity amp Dissolved Oxygen Instruments M5454 0315
6. RETURN REQUESTS INQUIRIES Direct all warranty and repair requests inquiries to the OMEGA Customer Service Department BEFORE RETURNING ANY PRODUCT S TO OMEGA PURCHASER MUST OBTAIN AN AUTHORIZED RETURN AR NUMBER FROM OMEGA S CUSTOMER SERVICE DEPARTMENT IN ORDER TO AVOID PROCESSING DELAYS The assigned AR number should then be marked on the outside of the return package and on any correspondence The purchaser is responsible for shipping charges freight insurance and proper packaging to prevent breakage in transit FOR WARRANTY RETURNS please have FOR NON WARRANTY REPAIRS consult the following information available BEFORE OMEGA for current repair charges Have the contacting OMEGA following information available BEFORE 1 Purchase Order number under which contacting OMEGA the product was PURCHASED 1 Purchase Order number to cover the 2 Model and serial number of the product COST of the repair under warranty and 2 Model and serial number of the product and 3 Repair instructions and or specific 3 Repair instructions and or specific problems problems relative to the product relative to the product OMEGA s policy is to make running changes not model changes whenever an improvement is possible This affords our customers the latest in technology and engineering OMEGA is a registered trademark of OMEGA ENGINEERING INC Copyright 2015 OMEGA ENGINEERING INC All rights reserved This document may not be copied photocopied
7. and workmanship for a period of 13 months from date of purchase OMEGA s WARRANTY adds an additional one 1 month grace period to the normal one 1 year product warranty to cover handling and shipping time This ensures that OMEGA s customers receive maximum coverage on each product If the unit malfunctions it must be returned to the factory for evaluation OMEGA s Customer Service Department will issue an Authorized Return AR number immediately upon phone or written request Upon examination by OMEGA if the unit is found to be defective it will be repaired or replaced at no charge OMEGA s WARRANTY does not apply to defects resulting from any action of the purchaser including but not limited to mishandling improper interfacing operation outside of design limits improper repair or unauthorized modification This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of having been damaged as a result of excessive corrosion or current heat moisture or vibration improper specification misapplication misuse or other operating conditions outside of OMEGA s control Components in which wear is not warranted include but are not limited to contact points fuses and triacs OMEGA is pleased to offer suggestions on the use of its various products However OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products in ac
8. 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 It may seem cheaper to keep recharging your system with refrigerant than fix a leak but it isn t in the long run And A C systems and chillers that aren t fully charged won t cool efficiently and thus waste money electricity powered systems or fuel vehicle systems 3 Most refrigerants deplete the ozone layer that blocks the Sun s harmful ultraviolet radiation In the U S the Clean Air Act of 1990 and later amendments require owners or operators of refrigeration and air conditioning equipment with refrigerant charges greater than 50 pounds to repair leaks within 30 days when those leaks result in the loss of more than 15 comfort cooling or 35 commercial cooling of the charge over a 12 month period The HHLT 2 s proprietary sensor and detection technology are the keys to its excellent performance and durability Compared to products of decades past with heated sensors the HHLT 2 warms its sensor to a much lower temperature The reduction in heat reduces the instrument s power consumption and improves sensor stability while extending the life of the sensor and maintaining its electrochemical functio
9. conductor Sensor Life gt 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 173 x 66 x 56mm w 17 in 432mm probe Weight of Instrument 1 5 Ib 6809 Dimensions of Carrying Case 15 x 11 x 4 in 382 x 279 x 102mm Weight of Instrument 2 Ibs 5 5 oz 1 06kg Batteries and Carrying Case Complies with SAE Standards J2791 and J2913 European Standard EN14624 Limited Warranty Term 2 years including sensor Power Source 4 AA batteries included Battery Life 5 hours continuous operation typical MAINTENANCE INSTRUCTIONS CHANGING BATTERIES When the red front panel LED labeled Low Battery lights up it s time to replace the instrument s four AA batteries To do so follow the procedure in the Setup Instructions section of this manual CHANGING THE FILTER The HHLT 2 ships with a pack of five small disc filters that install upstream of the sensor Replace the filter whenever it becomes visibly dirty or every few months depending on use To change the filter unscrew the black plastic tip of the probe from the black plastic sensor enclosure see figure on p 6 Remove the old filter install the new one and then screw the plastic tip back into the enclosure NOTES WARRANTY DISCLAIMER OMEGA ENGINEERING INC warrants this unit to be free of defects in materials
10. cordance with information provided by OMEGA either verbal or written OMEGA warrants only that the parts manufactured by the company will be as specified and free of defects OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER EXPRESSED OR IMPLIED EXCEPT THAT OF TITLE AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED LIMITATION OF LIABILITY The remedies of purchaser set forth herein are exclusive and the total liability of OMEGA with respect to this order whether based on contract warranty negligence indemnification strict liability or otherwise shall not exceed the purchase price of the component upon which liability is based In no event shall OMEGA be liable for consequential incidental or special damages CONDITIONS Equipment sold by OMEGA is not intended to be used nor shall it be used 1 as a Basic Component under 10 CFR 21 NRC used in or with any nuclear installation or activity or 2 in medical applications or used on humans Should any Product s be used in or with any nuclear installation or activity medical application used on humans or misused in any way OMEGA assumes no responsibility as set forth in our basic WARRANTY DISCLAIMER language and additionally purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product s in such a manner
11. ctionS 0 0 0 ccc cece eee eee 9 Changing the Batteries 0 ccc cece eee 9 Replacing the Filter 0 0 ccc cece eee eee eee 9 Warranty Information 0 0 0 0 cece cee cee e eee eens 10 Return for Repair Policy 0 c cece cece eee eens 10 INTRODUCTION Thank you for purchasing OMEGA s HHLT 2 Digital Refrigerant Leak Detector with Pump Please read this user s manual carefully and thoroughly before using the product The HHLT 2 s long lasting solid electrolyte semiconductor sensor can detect leaks of all halogenated chlorine or fluorine based refrigerant gases currently in common use They include HFCs hydrofluorocarbons CFCs chlorofluorocarbons and HCFCs hydrochlorofluorocarbons Specifically the instrument can detect e Widely used HFC refrigerants such as R 134a R 410a R 404a R 407c and R 507 e CFC refrigerants such as CFC 12 R 12 commonly known as Freon e HCFC replacement blends such as R 22 approved by the U S EPA for complying with the stratospheric ozone protection provisions of the Clean Air Act e R 1234yf the newly approved hydrofluoroolefin HFO refrigerant with a global warming potential 335 times less than that of R 134a Electronic sensing is the most widely used sensitive and accurate method of refrigerant leak detection WHY LOOK FOR REFRIGERANT LEAKS There are three reasons to detect and repair leaks of refrigerant gases from stationary and mobile air
12. in the case KEY FEATURES e Proprietary sensor with lifetime of thousands of hours of operation ten years of normal use e Detects all commercially available HFC HFO HC HCFC and CFC refrigerants as well as blends and newly approved replacements such as R 22 and R 1234yf e Triple redundant leak indication loud fast beep bright flashing LED digital leak size reading e True mechanical pump draws in samples increasing sensitivity e Sensitivity of 0 05 oz year 1 4 g year to R 134a e Three sensitivity levels e Fast warmup e Comfortable neoprene grip e Automatic calibration and reset to ambient levels Mutable beeper e Garage durable construction e Leak test vial e Low battery indicator e Padded hard plastic case e Made in U S A e SAE J2791 and J2913 certified e 2 year warranty includes sensor e CE RoHS WEEE approved e Complies with European standard EN 14624 WHAT S IN THE CASE The HHLT 2 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 i compartment at the bottom of the S HHLT 2 Insert two batteries in the right side of the compartment
13. n Test data indicate no decline in the sensor s performance after thousands of hours of operation Sensor life is specified at more than ten years of normal use In addition because the instrument and sensor comply with SAE Standards J2791 and J2913 and the European Standard EN14624 the sensor will not be damaged by overexposure to refrigerant gas or by contamination by water To comply with SAE J2791 the HHLT 2 also had to demonstrate its sensitivity to 15 different chemicals and pass two garage durability tests one requiring it to survive three drops from 4 ft onto concrete HOW IT WORKS A small mechanical pump inside the HHLT 2 draws a sample of air through the tip of the instrument s 17 in long probe into a proprietary sensor 1 1 2 inches downstream A proportional halogen detector in the sensor determines whether any refrigerant gas is in the sample If any gas is detected the sensor and other circuits measure the amount of refrigerant and convert the value to an electrical signal If no leak is detected no signal is produced and the display remains off dark When a leak is detected the signal is amplified digitized and displayed on the front panel as a large bright red number from 1 to 9 corresponding to the size of the leak 1 for the smallest leaks 9 for the largest 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
14. ng frequency of the Black plastic red LED near the probe tip will increase dramatically A ath pinhole number between 4 and 6 should DO NOT appear on the digital leak size indicator if you are using aS remove to test the vial included with the unit Glass leak 4 Put the black rubber cap back over the vial s screw on cap test vial If you do not the contents of the vial will evaporate over time NOTE If the above check does not produce a non zero reading either your leak test vial is empty or your HHLT 2 is defective If the bottom of your leak test vial does not appear green replace the vial To locate a replacement search the Internet for Refrigerant leak detector reference If a full leak test vial does not produce a non zero reading it is likely that your HHLT 2 is defective or requires a new sensor General will repair or replace your unit or its sensor if you purchased it within the past two years and have complied with the terms of the HHLT 2 s limited warranty Contact our Customer Service department at 800 872 9436 to obtain a Return Goods Authorization RGA number before shipping the unit 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 semi
15. obe which retains its configured shape close to any suspected source of leaking refrigerant gas In a vehicle wet oily areas around hose connections and fittings and greasy streaks radiating outward around the compressor clutch or on the underside of the hood just above the compressor are telltale signs of a leak Another place to check sooner rather than later is the evaporator located inside the heater defroster plenum under the dash Whenever the sensor at the end of the probe senses a refrigerant gas that it has been designed to detect 1 The red LED at the end of the probe will begin flashing much faster than three times every two seconds 2 The beeper will increase its own frequency correspondingly 3 Anumber from 1 to 9 will appear in the digital leak size indicator window 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 The table below can be used to approximate the size of a leak Maximum Value Leak Size 0z yr Displayed 1to3 lt 0 1 4to6 0 1 to 0 5 Note re Cross sensitivity to automo
16. ol YEAR WARRANTY Shop online at omega com gt e mail info Qomega com For latest product manuals www omegamanual info HHLT 2 Refrigerant Leak Detector With Pump OF OMEGA omega com info omega com e o e Servicing North America U S A Omega Engineering Inc One Omega Drive P O Box 4047 Stamford CT 06907 0047 USA Toll Free 1 800 826 6342 USA amp Canada only Customer Service 1 800 622 2378 USA amp Canada only Engineering Service 1 800 872 9436 USA amp Canada only Tel 203 359 1660 Fax 203 359 7700 e mail info omega com For Other Locations Visit omega com worldwide The information contained in this document is believed to be correct but OMEGA accepts no liability for any errors it contains and reserves the right to alter specifications without notice TABLE OF CONTENTS IntrOdueton uvssssraserodrassradsrevssedteverssriersd 2 4 How It WOrkS 0 ccc cece eee eens 3 4 Key Features ioiii dnt aii abt tees dee tele nad Need dees 4 What s inthe Case mesiana neiaint naaa aa aed ae dene ee 5 Setup InstructionS 0 0 cece cece eee eens 5 Install BattOneS 3s sie State So ae an ok Sheed ee 5 Operating Instructions 0 0 ccc cece eee eens 5 8 Staring UP e226 te ak el ee et 5 6 Checking for Leaks 0 0 cece eee eee eens 6 7 Using the Leak Test Vial 0 00 ccc cece eee eens 8 SPECICATION es stikk anal e E dried ween edt eer ee 9 Maintenance Instru
17. tive chemicals Some automotive solvents and chemicals have hydrocarbon properties similar to R134a and therefore may produce a non zero reading on the digital leak detector Before checking for refrigerant leaks clean up any chemicals in the list below which may produce a positive response Brand type Response Ford spot remover wet Ford rust inhibitor Ford gasket adhesive wet Loctite Natural Blue degreaser diluted Ford brake parts cleaner Ford silicone rubber uncured Motorcraft antifreeze heated to 160 F Gunk liquid wrench Ford pumice lotion with solvent Ford Motorcraft brake fluid Ford carburetor cleaner lt lt lt lt lt lt lt lt lt lt lt lt USING THE LEAK TEST VIAL The HHLT 2 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 2 Power on the HHLT 2 and wait for it to complete the three step startup sequence Black rubber 3 Position the tip of the probe at the pinhole in the top of ei the vial s screw on cap If the HHLT 2 is working as properly the beep rate and the flashi
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