SIL Safety Manual for Echotel Model 961/962 Functional Safety Manual Ultrasonic Level Switches This manual complements and is intended to be used with the Magnetrol Echotel Model 961/962 Ultrasonic Single and Dual Point Level Switches Installation and Operating Manual (Bulletin 51-646, dated October 2008 or later). Application Echotel Model 961/962 ultrasonic level switches utilize pulsed signal technology to detect high, low, or dualpoint level in a broad range of liquid media applications. The advanced self-test technology provides reliability and continuous testing of electronics, transducer, piezoelectric crystals, and electromagnetic noise. Benefits Model 961 Model 962 The Echotel Model 961/962 ultrasonic level switches provide the following benefits: • Single or dual point liquid level measurement • Adjustable time-delay for turbulent aerated liquids • Reliable liquid level measurement independent of changes in media density, conductivity, or temperature • Relay output or mA current shift with separate malfunction indication • Integral or remote mount electronics • Pulsed signal technology • Extensive FM, CSA, and ATEX explosion proof and intrinsically safe approvals • Suitable for Safety Integrity Level (SIL) 2 loops Echotel Model 961/962 Ultrasonic Level Switches Table of Contents SIL Safety Manual for Model 961/962....................................1 Echotel Model 961/962 Ultrasonic Level Switches...........1 Application.......................................................................1 Benefits ............................................................................1 1.0 Introduction ...................................................................3 1.1 Product Description ..................................................3 1.2 Theory of Operation.................................................3 1.2.1 Transducer Design..........................................4 1.2.2 Transducer Materials ......................................4 1.3 Determining Safety Integrity Level (SIL) ..................4 2.0 Applicable Models ..........................................................5 3.0 Mean Time To Repair (MTTR).....................................5 4.0 Supplementary Documentation......................................5 5.0 Instructions ....................................................................6 5.1 Systematic Limitations ..............................................6 5.1.1 Application Locations.....................................6 5.1.2 Operating Temperature ..................................6 5.1.3 Operating Pressure .........................................6 5.1.4 Environmental................................................6 5.2 Skill Level of Personnel .............................................6 5.3 Necessary Tools .........................................................7 5.4 Storage ......................................................................7 5.5 Installation ................................................................7 5.5.1 Hygienic-Specific Installation .........................8 5.5.2 Pump-Specific Installation..............................8 5.6 Configuration ...........................................................8 5.6.1 Time-delay Potentiometer ..............................8 5.6.2 Level Test Push Button...................................8 5.6.3 Malfunction Test Push Button........................9 5.6.4 High/Low DIP Switch ...................................9 5.6.5 Independent/Joint DIP Switch.......................9 5.6.6 Loop Test Push Button...................................9 5.6.7 Fault Test Push Button .................................10 5.6.8 22/3.6 DIP Switch .......................................10 5.6.9 PC/LC DIP Switch ......................................10 5.7 Site Acceptance Testing ...........................................10 5.8 Maintenance ............................................................10 5.8.1 Diagnostics...................................................11 5.8.2 Troubleshooting ...........................................11 6.0 Appendices ...................................................................12 6.1 SIL Declaration of Conformity ...............................12 6.2 FMEDA Report Management Summary ................13 6.2.1 Model 961 Loop-Powered Level Switch .......13 6.2.2 Model 961 AC/DC Ultrasonic Level Switch with Relay Output...................13 6.2.3 Model 962 Loop-Powered Ultrasonic Level Switches ..............................................14 6.2.4 Model 962 AC/DC Ultrasonic Level Switch with Relay Output...................14 6.3 Report - Lifetime of Critical Components ..............15 51-650 Echotel SIL Safety Manual 1.0 Introduction 1.1 Product Description Echotel Model 961 and 962 ultrasonic level switches utilize pulsed signal technology to detect high, low, or dual point level in a broad range of liquid media applications. Model 961 is a single point level switch. Model 962 is a dual point switch used as a level controller or to control pumps in an auto-fill or auto-empty mode. Both Model 961 and 962 switches are suitable for use in Safety Integrity Level (SIL) 2 loops. 1.2 Ultrasonic transducer Transmit crystal Figure 1 Ultrasonic Signal Transmission Across Transducer Gap 51-650 Echotel SIL Safety Manual Receive crystal Theory of Operation Model 961/962 switches utilize ultrasonic energy to detect the presence or absence of liquid in a single or dual point transducer. Ultrasonic contact level technology uses highfrequency sound waves that are easily transmitted across a transducer gap (see Figure 1) in the presence of a liquid media, but are attenuated when the gap is dry. Mode 961/962 switches use an ultrasonic frequency of 2 MHz to perform this liquid level measurement in a wide variety of process media and application conditions. The transducer uses a pair of piezoelectric crystals that are encapsulated in epoxy at the tip of the transducer. The crystals are made of a ceramic material that vibrates at a given frequency when subjected to an applied voltage. The transmit crystal converts the applied voltage from the electronics into an ultrasonic signal. When liquid is present in the gap, the receive crystal senses the ultrasonic signal from the transmit crystal and converts it back to an electrical signal. This signal is sent to the electronics to indicate the presence of liquid in the transducer gap. When there is no liquid present, the ultrasonic signal is attenuated and is not detected by the receive crystal. 3 1.2.1 Transducer Design Magnetrol’s advanced transducer design performs in difficult process conditions. Model 961 has a tip-sensitive transducer with an arched gap increasing its performance in aerated or foamy liquids. Model 962 has a tip-sensitive lower gap and flow-through upper gap permitting separations of 125 inches (318 cm). 1.2.2 Transducer Materials A broad selection of transducer materials is available for the Model 961/962. Metallic transducers include 316 SS, Hastelloy® C, and Monel®. The 316 SS transducer has a NACE construction option for sour gas service, and can also be built per ASME B31.1 and B31.3 piping codes. Thermoplastic transducers include Kynar® and CPVC. These corrosion resistant plastic transducers feature a stiffening tube that runs the length of the transducer for extra rigidity. Kynar-faced 316 SS flange options are offered with the Kynar transducers. 1.3 Table 1 SIL vs. PFDavg Safety Integrity Level (SIL) 4 3 2 1 Target Average Probability of Failure on Demand (PFDavg) ≥10-5 to <10-4 ≥10-3 to <10-2 ≥10-2 to <10-1 0 1 2 SIL 1 SIL 2 60% to <90% SIL 1 SIL 2 SIL 3 Medium: 90% to <99% SIL 2 SIL 3 Low: High: ≥99% 4 Table 2 can be used to determine the achievable SIL as a function of the Hardware Fault Tolerance (HFT) and the Safe Failure Fraction (SFF) for the complete safety system (Type B–complex components as per IEC 61508 Part 2) of which the level transmitter is one component. Hardware Fault Tolerance (HFT) Not Allowed None: <60% Tables 1 and 2 define the criteria for the achievable SIL against the target mode of operation in Demand Mode Operation. Table 1 shows the relationship between the SIL and the Probability of Failure on Demand Average (PFDavg). ≥10-4 to <10-3 Table 2 Minimum Hardware Fault Tolerance SFF Determining Safety Integrity Level (SIL) SIL 3 51-650 Echotel SIL Safety Manual 2.0 Applicable Models This manual is applicable to the following models of the Echotel ultrasonic level switches with relay output or current shift output: • Model 961 Single Point Level Switches • Model 962 Dual Point Level Switches 3.0 Mean Time To Repair (MTTR) SIL determinations are based on a number of factors including the Mean Time To Repair (MTTR). The analysis for the Echotel Model 961/962 ultrasonic level switch is based on a MTTR of 24 hours. 4.0 Supplementary Documentation Refer to the following documents as supplements to this Echotel Model 961/962 SIL Safety Manual: • Echotel Model 961/962 Ultrasonic Single and Dual Point Level Switches Installation and Operating Manual • Magnetrol Model 961 AC/DC Ultrasonic Level Switch with Relay Output, Failure Modes, Effects, and Diagnostic Analysis • Magnetrol Model 961 Loop-Powered Ultrasonic Level Switch, Failure Modes, Effects, and Diagnostic Analysis • Magnetrol Model 962 AC/DC Ultrasonic Level Switch with Relay Output, Failure Modes, Effects, and Diagnostic Analysis • Magnetrol Model 962 Loop-Powered Ultrasonic Level Switch, Failure Modes, Effects, and Diagnostic Analysis NOTE: The Failure Modes, Effects, and Diagnostic Analysis (FMEDA) reports can be found in the Downloads tab of the Echotel 961/962 on our website at: www.magnetrol.com. 51-650 Echotel SIL Safety Manual 5 5.0 Instructions 5.1 Systematic Limitations The following application and environmental limitations must be observed to avoid systematic failures. 5.1.1 Application Locations The Model 961/962 ultrasonic level switch should be located for easy access for service, configuration, and monitoring. There should be sufficient headroom to allow installation and removal of the unit. Special precautions should be made to prevent exposure to corrosive atmosphere, excessive vibration, shock, or physical damage. 5.1.2 Operating Temperature The ambient temperature range for the 961/962 electronics is -40° to +160° F (-40° to + 70° C). The operating temperature for the transducer is dependent on transducer material (see Table 3). Table 3 9A1/9M1 Transducer Operating Temperatures 316 Stainless Steel, Hastelloy C, and Monel -40° to +325° F (-40° to +163° C) Kynar -40° to +250° F (-40° to +121° C) CPVC -40° to +180° F (-40° to 82° C) 5.1.3 Operating Pressure Maximum operating pressures are dependent on the transducer material. Refer to Section 3.4 in the Echotel Model 961/962 Ultrasonic Level Switches Installation and Operating Manual (Bulletin 51-646). 5.1.4 Environmental See Section 3.4 of the Echotel Model 961/962 Ultrasonic Single and Dual Point Level Switches Installation and Operating Manual (Bulletin 51-646) for environmental limitations. 5.2 Skill Level of Personnel Personnel following the procedures of this safety manual should have technical expertise equal to or greater than that of a qualified instrument technician. 6 51-650 Echotel SIL Safety Manual 5.3 Necessary Tools High Alarm Fill Line Dual Point Alarm No special equipment or tools are required to install Echotel Model 961/962 ultrasonic level switch. The following items are recommended: • Wrenches, flange gaskets, and flange bolting appropriate for process connection(s) • Screwdrivers and assorted tools for making conduit and electrical connections Pump Protection • Digital multimeter or DVM for troubleshooting Low Alarm 5.4 Storage Figure 2 Model 961/962 should be stored in its original shipping box and not be subjected to temperatures outside the storage temperature range -40° F to +160° F (-40° C to +70° C), as shown in Section 3.1 of the Echotel Model 961/962 Ultrasonic Level Switches Installation and Operating Manual (Bulletin 51.646). Typical Mounting Orientations 5.5 Use wrench on flats Process connection Figure 3 Vertical Mounting Bottom View Installation The Model 961 single point switch may be used for high or low level alarm, overfill protection, or seal pot level and pump protection. Model 961 can be mounted vertically or horizontally in vessels, bridles, or pipes. The Model 962 dual point switch may be used to measure high/low, high/high, or low/low levels. It can be used as a level controller or to control pumps in an auto-fill or autoempty mode. Model 962 must be top mounted. Refer Figures 2–5 to the Echotel Model 961/962 Ultrasonic Single and Dual Point Level Switches Installation and Operating Manual (Bulletin 51.646) for the proper installation instructions. Bottom View Figure 4 Figure 5 Horizontal Mounting Nozzle Mounting 51-650 Echotel SIL Safety Manual 7 5.5.1 Hygienic-Specific Installation The hygienic version of the Model 961 is available with a deep-drawn 304 stainless steel housing. A variety of hygienic process connections are offered for use in food and beverage, pharmaceutical, and biotechnology applications. These hygienic transducers have 3-A (Authorization #596), EHEDG certification (per TNO Report # V4772/01) and a 20 Ra finish providing a uniform and ultra-smooth surface that inhibits microbial growth. Electron beam welding technology is utilized to facilitate a crevice-free surface inside the transducer tip. This allows these transducers to be used in a wide variety of hygienic applications where CIP (clean-in-place) is used to remove any contamination from the transducer surface. 5.5.2 Pump-Specific Installation A DIP switch on the Model 962 allows it to be configured to control level, or to function as a pump controller. In the pump control mode the unit can perform auto-fill or autoempty of tanks, sumps, or wet wells. The tip sensitive lower gap allows liquid levels to be pumped down to within 1⁄4" from the bottom of the vessel. The rigidity of the flow through upper gap allows the Model 962 to be used even when sumps experience severe turbulence from vessel fill lines. 5.6 Configuration Refer to Section 2.5 in the Echotel Model 961/962 Ultrasonic Single and Dual Point Level Switches Installation and Operating Manual (Bulletin 51.646) for complete configuration instructions. 5.6.1 Time-Delay Potentiometer The time-delay potentiometer is used in applications where turbulence or splashing may cause false level alarm. The response time can be adjusted from factory-set standard of 0.5 seconds to a maximum of 45 seconds. The time-delay potentiometer is an option for both Model 961 and Model 962 in either line-powered or loop-power configuration. 5.6.2 Level Test Push Button The level test push button is used to manually test the DPDT process level relay and whatever is connected to the relay. Pressing this push button reverses the state of the DPDT relay from engaged to de-engaged, or vise-versa. The level test push button is an option for both Model 961 and Model 962 in line-powered configuration only. 8 51-650 Echotel SIL Safety Manual 5.6.3 Malfunction Test Push Button The malfunction test push button is used to manually test the SPDT malfunction relay and whatever is connected to the relay. Pressing and holding this push button for 2 seconds causes the SPDT relay to de-engage, indicating a fault condition. The malfunction test push button is an option for both the Model 961 and Model 962 in line-powered configuration only. 5.6.4 High/Low DIP Switch The Hi/Lo DIP switch is used to select whether the switch is used as a high-level fail-safe or a low-level fail-safe switch. See Section 2.5 of the Echotel Model 961/962 Ultrasonic Single and Dual Point Level Switches Installation and Operating Manual (Bulletin 51.646) for high/low DIP switch configuration tables. 5.6.5 Independent/Joint DIP Switch The I/J DIP switch is used to configure the SPDT malfunction relay to act independently or jointly with the DPDT process-level relay. In the factory-set I position, the SPDT and DPDT relays act independent of each other. In the J position, both the SPDT and DPDT relays will de-engage when a fault is detected. The I/J DIP switch is an option for the Model 961 in line-powered configuration only. 5.6.6 Loop Test Push Button The loop test push button is used to manually test the loop current output. For Model 961, pressing the loop test push button reverses the output from 8 mA to 16 mA or from 16 mA to 8 mA. For Model 962, pressing the loop test push button changes the output from 8 mA to 12 mA, 12 mA to 16 mA, or 16 mA to 8 mA. 51-650 Echotel SIL Safety Manual 9 5.6.7 Fault Test Push Button The fault test push button is used to manually change the mA values to that selected at the 22/3.6 DIP switch. Pressing this push button for 2 seconds simulates a circuit test failure. The output goes to the selected fault current of either 22 or 3.6 mA, and all 3 LEDs go dark. The fault test push button is an option on both Model 961 and Model 962 in loop-powered configuration only. 5.6.8 22/3.6 DIP Switch The 22/3.6 switch is used to produce a 22 mA or 3.6 mA output when the unit detects a fault. The 22/3.6 switch is on both the Model 961 and Model 962 in loop-powered configuration only. 5.6.9 PC/LC DIP Switch The PC/LC DIP switch is used to select pump control (PC) or level control (LC) mode. In PC mode, the switch functions as a pump controller where the relays latch to enable an auto fill or auto empty operation. In LC mode, the switch functions as a level controller where the relays operate independently of each other. See Section 2.5 of the Echotel Model 961/962 Ultrasonic Single and Dual Point Level Switches Installation and Operating Manual (Bulletin 51.646) for proper setting of the PC/LC DIP switches. 5.7 Site Acceptance Testing Complete a site acceptance test to ensure proper operation after installation and configuration. Results of site acceptance testing should be recorded for future reference. 5.8 Maintenance • Report all failures to Magnetrol. • Firmware can only be upgraded by factory personnel. 10 51-650 Echotel SIL Safety Manual 5.8.1 Diagnostics Model 961/962 has a unique diagnostics feature to assist in troubleshooting should a failure occur. A microprocessor in the electronics continuously monitors all self-test data. Should a fault occur, the microprocessor can determine whether the malfunction is due to the electronics, transducer, piezoelectric crystals, or the presence of environmental noise. Table 4 Diagnostic Push Buttons and LED Indications Electronics Version Push Button LED 961 with 5 amp relays LEVEL TEST FAULT 961 with current shift LOOP TEST FAULT 962 with 5 amp relays LEVEL TEST FAULT 962 with 5 amp relays LOOP TEST 16 mA Table 4 shows the push buttons and LEDs used for each version of the 961/962 for diagnostic troubleshooting: 5.8.2 Troubleshooting Model 961/962 has a diagnostic push button and Fault LED used to assist in troubleshooting the switch (see Table 5). Table 5 Troubleshooting Faults and Corrective Actions Flashes 1 flash 2 flashes 3 flashes Fault Action Indicates a problem with either the transducer, piezoelectric crystals, or the interconnection wiring. Check wiring inside the housing to make sure that all wires are secure in their respective terminal blocks. Make sure that all the terminal block screws are fully tightened. If all wires are secure then contact the factory. Replace transducer if needed. Refer to Section 3.8 of the Installation and Operating Manual for proper replacement part numbers. Indicates a problem with one of the electronics boards. Contact the factory for a replacement electronics module. Refer Section 3.8 of the Installation and Operating Manual for spare electronics modules part numbers. Indicates excessive levels of environmental noise. Check if any source may be causing the interference, such as VFD (variable frequency drive), radiated electrical interference (two-way radio transceiver) or mechanical vibration from nearby source. Refer to Section 3.7 of the Echotel Ultrasonic Single and Dual Point Level Switches Installation and Operating Manual (Bulletin 51.646) for troubleshooting device errors. 51-650 Echotel SIL Safety Manual 11 6.0 Appendices 6.1 SIL Declaration of Conformity Functional safety according to IEC 61508. Magnetrol International, Incorporated 5300 Belmont Road, Downers Grove, Illinois 60515 declares as the manufacturer, that the level switches: Echotel Model 961/962 Ultrasonic Single and Dual Point Level Switches are suitable for use in safety instrumented systems according to IEC 61508, if the safety instructions and following parameters are observed: FIT = Failure in Time (1×10-9 failures per hour) Model 961 Loop-Powered Model 961 AC/DC Line-Powered Model 962 Loop-Powered Model 961 AC/DC Line-Powered 2 2 2 2 Proof Test Interval 1 Year 1 Year 1 Year 1 Year SFF 91.4% 92.0% 91.8% 91.5% 1.61E-04 1.77E-04 1.87E-04 2.31E-04 0 FIT 0 FIT 0 FIT 0 FIT 96 FIT 106 FIT 110 FIT 130 FIT λdd 288 FIT 351 FIT 362 FIT 427 FIT λdu 36 FIT 40 FIT 42 FIT 52 FIT Product SIL PFDavg λsd λsu As determined in compliance with ANSI/ISA-84.01 clause 9.2.3 for 1oo1 system. Magnetrol International, Incorporated 5300 Belmont Road Downers Grove, Illinois 60515 12 Name Name Title Title Date Date 51-650 Echotel SIL Safety Manual 6.2 FMEDA Report Management Summary 6.2.1 Model 961 Loop-powered Level Switch The Model 961 ultrasonic level switch is a complex device classified as Type B according to IEC61508, having a hardware fault tolerance of 0. This 24 VDC loop-powered unit contains self diagnostics programmed to output either 3.6 mA or 22 mA during a failure state. Additionally, any output that exceeds the nominal values of 8 mA and 16 mA by a tolerance of ±1.6 mA must be detected as a fault by the logic solver. The FMEDA analysis assures the diagnostic signal is being transmitted to a logic solver programmed to detect over-scale and under-scale currents. The Model 961 failure rates are shown on Table 6. Table 6 Model 961 IEC 61508 Format Failure Rates Failure Category λsd λsu λdd λdu SFF Model 961 0 FIT 96 FIT 288 FIT 36 FIT 91.4% These failure rates can be used in a probabilistic model of a Safety Instrumented Function (SIF) to determine suitability in part of Safety Instrumented System (SIS) usage in a particular Safety Integrity Level (SIL). A more complete listing of failure rates is provided in Section C.4 of the FMEDA for the 961 Loop-Powered Switch. 6.2.2 Model 961 AD/DC Ultrasonic Level Switch with Relay Output The Model 961 ultrasonic level switch is a complex device and is classified as Type B according to IEC 61508 having a hardware fault tolerance of 0. The Model 961 ultrasonic level switch is an 18–32 VDC or 102–265 VAC power device that provides relay outputs. Model 961 has only one output failure state (fail-safe), with the relay de-energized. Model 961 failure rates are shown in Table 7. Table 7 Model 961 IEC 61508 Format Failure Rates Failure Category λsd λsu λdd λdu SFF Model 961 0 FIT 106 FIT 351 FIT 40 FIT 92.0% A more complete listing of failure rates is provided in Section C.4 of the FMEDA for the 961 Line-Powered Switch. 51-650 Echotel SIL Safety Manual 13 6.2.3 Model 962 Loop-powered Ultrasonic Level Switches The Model 962 ultrasonic level switch is a complex device classified as Type B according to IEC61508, having a hardware fault tolerance of 0. This 24 VDC loop-powered unit contains self diagnostics programmed to output either 3.6 mA or 22 mA during a failure state. Additionally, any output that exceeds the nominal values of 8 mA and 16 mA by a tolerance of ±1.6 mA must be detected as a fault by the logic solver. The FMEDA analysis assumes the diagnostic signal is being transmitted to a logic solver programmed to detect over-scale and under-scale currents. Model 962 failure rates are shown in Table 8. Table 8 Model 962 IEC 61508 Format Failure Rates Failure Category λsd λsu λdd λdu SFF Model 961 0 FIT 110 FIT 362 FIT 42 FIT 91.8% A more complete listing of failure rates is provided in Table 1, of the FMEDA for the 962 Loop-powered Switch. 6.2.4 Model 962 AC/DC Ultrasonic Level Switch with Relay Output The Model 962 ultrasonic level switch is a complex device classified as Type B according to IEC61508, having a hardware fault tolerance of 0. The Model 962 ultrasonic level switch is an 18–32 VDC or 102–265 VAC power device that provides relay outputs. The Model 962 has only one output failure state (fail-safe) with the relay de-energized. The Model 962 failure rates are shown in Table 9. Table 9 Model 962 IEC 61508 Format Failure Rates Failure Category λsd λsu λdd λdu SFF Model 961 0 FIT 130 FIT 427 FIT 52 FIT 91.5% A complete listing of failure rates is provided in Table 1 of the FMEDA for the 962 Line-Powered Switch. 14 51-650 Echotel SIL Safety Manual 6.3 Report - Lifetime of Critical Components According to Section 7.4 of IEC 61508-2, a useful lifetime, based on experience, should be assumed. Although a constant failure rate is assumed by the probabilistic estimation method, this only applies provided that the useful lifetime of components is not exceeded. Beyond their useful lifetime, the result of the probabilistic calculation method is therefore meaningless, as the probability of failure significantly increases with time. The useful lifetime is highly dependent on the subsystem itself and its operating conditions. This assumption of a constant failure rate is based on the bathtub curve. Therefore it is obvious that the PFDavg calculation is only valid for components that have this constant domain and that the validity of the calculation is limited to the useful lifetime of each component. As there are no electrolytic capacitors used, there are no electrical components that limit the useful lifetime of the system. Based on general field failure data, a useful life period of approximately 50 years is expected for the Echotel Model 961/962 Ultrasonic Level Switches. When plant experience indicates a shorter useful lifetime than indicated, the number based on plant experience should be used. 51-650 Echotel SIL Safety Manual 15 References • ANSI/ISA-84.00.01-2004 Part 1 (IEC 61511-1Mod) “Functional Safety: Safety Instrumented Systems for the Process Industry Sector –Part 1 Hardware and Software Requirements” • ANSI/ISA-84.00.01-2004 Part 2 (IEC 61511-2Mod) “Functional Safety: Safety Instrumented Systems for the Process Industry Sector –Part 2 Guidelines for the Application of ANSI/ISA84.00.01-2004 Part 1 (IEC 61511-1 Mod) –Informative” • ANSI/ISA-84.00.01-2004 Part 3 (IEC 61511-3Mod) “Functional Safety: Safety Instrumented Systems for the Process Industry Sector –Part 3 Guidance for the Determination of the Required Safety Integrity Levels – Informative” • ANSI/ISA-TR84.00.04 Part 1 (IEC 61511 Mod) “Guideline on the Implementation of ANSI/ISA84.00.01-2004” Disclaimer The SIL values in this document are based on an FMEDA analysis using exida’s SILVER Tool. Magnetrol accepts no liability whatsoever for the use of these numbers of for the correctness of the standards on which the general calculation methods are based. ASSURED QUALITY & SERVICE COST LESS Service Policy Owners of Magnetrol controls may request the return of a control or any part of a control for complete rebuilding or replacement. They will be rebuilt or replaced promptly. Controls returned under our service policy must be returned by prepaid transportation. Magnetrol will repair or replace the control at no cost to the purchaser (or owner) other than transportation if: 1. Returned within the warranty period; and 2. The factory inspection finds the cause of the claim to be covered under the warranty. If the trouble is the result of conditions beyond our control; or, is NOT covered by the warranty, there will be charges for labor and the parts required to rebuild or replace the equipment. In some cases it may be expedient to ship replacement parts; or, in extreme cases a complete new control, to replace the original equipment before it is returned. If this is desired, notify the factory of both the model and serial numbers of the control to be replaced. In such cases, credit for the materials returned will be determined on the basis of the applicability of our warranty. Return Material Procedure So that we may efficiently process any materials that are returned, it is essential that a “Return Material Authorization” (RMA) number be obtained from the factory prior to the material’s return. This is available through Magnetrol’s local representative or by contacting the factory. Please supply the following information: 1. 2. 3. 4. 5. Company Name Description of Material Serial Number Reason for Return Application Any unit that was used in a process must be properly cleaned in accordance with OSHA standards, before it is returned to the factory. A Material Safety Data Sheet (MSDS) must accompany material that was used in any media. All shipments returned to the factory must be by prepaid transportation. All replacements will be shipped F.O.B. factory. No claims for misapplication, labor, direct or consequential damage will be allowed. 5300 Belmont Road • Downers Grove, Illinois 60515-4499 • 630-969-4000 • Fax 630-969-9489 • www.magnetrol.com 145 Jardin Drive, Units 1 & 2 • Concord, Ontario Canada L4K 1X7 • 905-738-9600 • Fax 905-738-1306 Heikensstraat 6 • B 9240 Zele, Belgium • 052 45.11.11 • Fax 052 45.09.93 Regent Business Ctr., Jubilee Rd. • Burgess Hill, Sussex RH15 9TL U.K. • 01444-871313 • Fax 01444-871317 Copyright © 2010 Magnetrol International, Incorporated. All rights reserved. Printed in the USA. Magnetrol, Magnetrol logotype, and Echotel are registered trademarks of Magnetrol International. Hastelloy® is a registered trademark of HAYNES INTERNATIONAL, INC. (DELAWARE CORPORATION). Monel® is a registered trademark of the INCO family of companies. Kynar® is a registered trademark of Elf Atochem North America, Inc. BULLETIN: 51-650.0 EFFECTIVE: July 2010