United Electric Controls 120 Series Installation And Maintenance Instructions Manual
Also see for 120 Series: Installation and maintenance instructionsInstallation & operation instructionsInstallation & operation instructions
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IMT120-10GENERALMIsuse of ThIs producT May cause explosIon andpersonal Injury. These InsTrucTIons MusT be Thoroughlyread and undersTood before unIT Is InsTalled.ThIs equIpMenT Is suITable for use In class I, dIvIsIon 1,groups b, c and d; class II, dIvIsIon 1, groups e, f and g;class III; or non-hazardous locaTIons only. enclosureType 4x, 7 & 9.ThIs equIpMenT Is aTex cerTIfIed for equIpMenT caTegory2. suITable for approprIaTe use In gas zone 1 & dusTzone 21 applIcaTIons.deMKo 09 aTex 0815573x0539 Iecex ul 03.0001xII 2 g ex d IIc T6 gbII 2 d ex tb IIIc T85°c db Ip66-40°c ≤ TaMb. ≤ + 75°cThese producTs do noT have any fIeld replaceableparTs. any subsTITuTIon of coMponenTs May IMpaIrsuITabIlITy for class I, dIvIsIon 1.To prevenT IgnITIon of hazardous aTMospheres,dIsconnecT supply cIrcuITs before openIng. Keep coverTIghT whIle cIrcuITs alIve.The 120 series temperature switch utilizes either a liquid filled sens-ing stem (immersion stem, direct mounting) or liquid filled sensing bulb(bulb & capillary, remote mounting) to detect a temperature change. Theresponse at a pre-determined set point(s), actuates a spdT, dual spdT,or dpdT snap-acting micro switch(es), converting the temperature signalinto an electrical signal. control set point(s) may be varied by turningthe adjustment hex (c120, f120) or the external knob(s) and pointer(s)(b121, b122, e121, e122, e122p, 820e, 822e) according to the proce-dures outlined (see part II - adjustments)MaxIMuM TeMperaTure* sTaTed In lITeraTure and on naMe-plaTe MusT never be exceeded, even by surges In The sys-TeM. occasIonal operaTIon of unIT up To Max. TeMpera-Ture Is accepTable (e.g., sTarT-up, TesTIng). conTInuous operaTIonshould be resTrIcTed To The desIgnaTed adjusTable range.*Maximum Temperature - the highest temperature to which a sensing ele-ment may be occasionally operated without adversely affecting set pointcalibration and repeatability.please refer to the product bulletins for product specifications. productbulletin may be found at www.ueonline.com.date code format on nameplate is “yyww” for year and week.TOOLS NEEDED – screwdriver/adjustable wrench to 1 1/2”MOUNTINGThe connecTIon of The devIce shall be Made by cableenTrIes or a sToppIng box cerTIfIed In Type of explosIonproTecTIon flaMeproof enclosure ‘d,’ suITable for ThecondITIons of use and correcTly InsTalled.To prevenT IgnITIon, seal all conduIT runs wIThIn 18 Inchesof enclosure.always hold a wrench on The TeMperaTure housIng hexwhen MounTIng unIT. do noT TIghTen by TurnIng enclosure.ThIs wIll daMage sensor and weaKen solder or weldedjoInTs.InsTall unITs where shocK, vIbraTIon and TeMperaTureflucTuaTIons are MInIMal. MounT unIT To prevenT MoIsTurefroM enTerIng The enclosure. IT Is IMperaTIve To useproperly raTed explosIon-proof sealIng fITTIngs for elecTrIcalwIre enTry. do noT MounT unIT In aMbIenT TeMperaTures ThaTexceed The lIMITs on The naMeplaTe for The approprIaTe area.c120, f120, 820e and 822e enclosures are provIded wIThTwo 3/4” npT elecTrIcal conduIT openIngs, eITher of whIchor boTh can be used durIng InsTallaTIon. a 3/4” explosIonproof plug* Is provIded for properly sealIng The unused conduITopenIng. The explosIon proof plug MusT be properly sealeddurIng producT InsTallaTIon.do noT KnocKouT any plugs on explosIon-proof Types 820eor 822eremote mount types e121, e122, e122p & f120 temperature controlscan be mounted vertically (temperature assembly facing down) or horizon-tally. The conduit connection must be properly sealed (potted) for horizontalinstallation. controls may be surface mounted via the four 1/4” screw clear-ance holes on the enclosure or through the use of a mounting bracket (seeMounting dimensions).*plug is approved explosion-proof with the product as a full assembly and does not carry indi-vidual markings.IMT120-10120 Series Explosion-ProofTemperature and IndicatingTemperature Switches andControlsLocal Mount Types B121, B122, C120Remote Mount Types E121, E122, E122P, F120;820E, 822EPlease read all instructional literature carefully and thoroughly before starting. Refer to the final page for the listing ofRecommended Practices, Liabilities and Warranties.Installation and MaintenanceInstructionsPart I - Installation |
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