United Electric Controls B117 Installation And Maintenance Instructions Manual

Also see for 117 Series: Installation and operation instruction Installation and maintenance instructions

United Electric Controls B117 Installation And Maintenance Instructions Manual Manual pdf 1 page image

IMT117-06www.ueonline.com117 SeriesTemperature SwitchTypes B117, E117 U N I T E D E L E C T R I CC O N T R O L SInstallation and MaintenanceInstructionsIMT117-06GENERALMISUSE OF THIS PRODUCT MAY CAUSE EXPLOSION AND PERSONALINJURY. THESE INSTRUCTIONS MUST BE THOROUGHLY READ ANDUNDERSTOOD BEFORE UNIT IS INSTALLED.THIS EQUIPMENT IS SUITABLE FOR CLASS I, DIVISION 2,GROUPS A,B,C,D; CLASS II, DIVISION 2, GROUPS F AND G; CLASS III;OR NON-HAZARDOUS LOCATIONS ONLY.Types B117 (Immersion Stem)The 117 Series temperature switch utilizes a liquid filled sensor whichexpands or contracts against a bellows to detect a temperature change.The response, at a pre-determined set point, actuates or deactuates aSPDT or DPDT snap-acting switch, converting the temperature signal into anelectrical signal. Control set point is adjusted by turning an internal dial (seeadjustment - Part II).Types E117 (Bulb & Capillary)The 117 Series temperature switch utilizes a liquid-filled sensing bulb whichhydraulically transmits temperature change to a bellows. The response, ata pre-determined set point, actuates or deactuates a SPDT or DPDT snap-acting switch, converting the temperature signal into an electrical signal.Control set point is adjusted by turning an internal dial (see adjustment- Part II).MAXIMUM TEMPERATURE: THE HIGHEST TEMPERATURE TO WHICHA SENSING ELEMENT MAY BE OCCASIONALLY EXPOSED TO WITH-OUT ADVERSELY AFFECTING SET POINT CALIBRATION AND REPEAT-ABILITY. MAXIMUM TEMPERATURE STATED IN LITERATURE AND ONNAMEPLATE MUST NEVER BE EXCEEDED, EVEN BY TEMPERATURE OVER-SHOOTS IN THE SYSTEM. OCCASIONAL OPERATION OF UNIT UP TO MAX.TEMPERATURE IS ACCEPTABLE (E.G., START-UP, TESTING). CONTINUOUSOPERATION SHOULD BE RESTRICTED TO THE DESIGNATED ADJUSTABLERANGE.THESE PRODUCTS DO NOT HAVE ANY FIELD REPLACEABLE PARTS.ANY SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FORCLASS I, DIVISION 2Part I - Installation Tools NeededAdjustable WrenchScrewdriverHammer (for alternate wire knockouts)MOUNTINGWARNING: EXPLOSION HAZARD - DO NOT DISCONNECT EQUIPMENTUNLESS POWER HAS BEEN SWITCHED OFF OR THE AREA IS KNOWNTO BE NON-HAZARDOUS.INSTALL UNIT WHERE SHOCK, VIBRATION AND TEMPERATUREFLUCTUATIONS ARE MINIMAL. MOUNT UNIT SO THAT MOISTURE ISPREVENTED FROM ENTERING THE ENCLOSURE. IF UNIT IS BEINGINSTALLED WHERE HEAVY CONDENSATION IS EXPECTED, VERTICALMOUNTING (TEMPERATURE SENSOR DOWN) IS REQUIRED. DO NOT MOUNTUNIT IN AMBIENT TEMPERATURES EXCEEDING PUBLISHED LIMITS.ALWAYS HOLD A WRENCH ON THE TEMPERATURE HOUSING HEXWHEN MOUNTING UNIT. DO NOT TIGHTEN BY TURNING ENCLOSURE.THIS WILL DAMAGE SENSOR AND WEAKEN SOLDERED OR WELDEDJOINTS.117 Series Temperature Controls can be mounted in any position. Mount theunit via the (2) 1/4” screw clearance holes on the enclosure (see MountingDimensions).Please read all instructional literature carefully and thoroughly before starting. Refer to the final page for the listing of RecommendedPractices, Liabilities and Warranties.For remote mounting, fully immerse the bulb and 6” capillary in the controlzone. For best control, it is generally desirable to place the bulb close to theheating or cooling source in order to sense temperature fluctuations quickly.Be sure to locate the bulb so it will not be exposed to temperature beyondthe instrument range limits.WIRINGDISCONNECT ALL SUPPLY CIRCUITS BEFORE WIRING UNIT.WIRE UNITS ACCORDING TO NATIONAL AND LOCAL ELECTRI-CAL CODES. MAXIMUM RECOMMENDED WIRE SIZE IS 14 AWG.THE RECOMMENDED TIGHTENING TORQUE FOR FIELD WIRINGTERMINALS IS 7 TO 17 IN-LBS.ELECTRICAL RATINGS STATED IN LITERATURE AND ON NAMEPLATESHOULD NEVER BE EXCEEDED. OVERLOAD ON A SWITCH CANCAUSE FAILURE ON THE FIRST CYCLE.Remove the two screws retaining the cover and cover gasket. A 1/2” NPTconduit connection is provided on the left hand side of the enclosure. Twocast-in 7/8” diameter knock outs for electrical conduits are located on theside and back of enclosure (see dimensional drawings, opposite page).These can easily be knocked out by placing a blade of a screwdriver ingroove and tapping sharply with a hammer. The terminal block terminals areclearly labeled “Common”, “Normally Open” and “Normally Closed.” For unitssupplied with DPDT, all terminals are labeled and the following color codingapplies.Grounding screw and clamp (cast in symbol) are provided. Keep the wire asshort as possible to prevent interference with the plunger.Part II - AdjustmentsTo change set point, turn dial and align with pointer.Types B117 and E117 with dial knob controls are factory calibrated formaximum accuracy at the midpoint of the scale.Re-calibrationTo re-calibrate, turn dial to desired set point. If the actual temperature and set pointtemperature do not agree, turn the 3/16” hex fine adjustment screw to the left toraise and to the right to lower temperature setting.SPDT DPDTSWT1 SWT2Common Violet Violet YellowNormally Closed Black Black RedNormally Open Blue Blue Orange

/ 2

Related manuals for United Electric Controls 117 Series