UE 100 Serie Installation And Maintenance Instructions Manual

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UE 100 Serie Installation And Maintenance Instructions Manual Manual pdf 1 page image

sure connection. Low pressure and differential pressure units, models520-535, 540-543, 544-548, are also available with an optionalsurface mounting bracket. Should the control be installed where con-densation is expected, vertical mounting is recommended as a means ofkeeping water away from switch terminals.Never use the enclosure for leverage to hand tighten the pressure con-nection. Always use a wrench to tighten the pressure connection to thepipe.To prevent damaging the pressure sensor, use a back-up wrenchto hold the hex nut in place when surface mounting.On models supplied with an external manual reset button, be sure toleave sufficient finger space over the reset button for the operator toreset the control. See Mounting Diagram.WIRINGDISCONNECT ALL SUPPLY CIRCUITS BEFORE WIRING.ELECTRICAL RATINGS STATED IN LITERATURE AND ONNAMEPLATES SHOULD NEVER BE EXCEEDED. OVERLOADON A SWITCH CAN CAUSE FAILURE ON THE FIRST CYCLE.WIRE UNITS ACCORDING TO NATIONAL AND LOCAL ELECTRICALCODES. MAXIMUM RECOMMENDED WIRE SIZE IS 14 AWG.Remove the two screws retaining the cover and cover gasket. Twocast-in knockouts for 1/2” conduit are located on the side andback of enclosure. These can easily be knocked out by placing theblade of a screwdriver in the groove and tapping sharply with ahammer. A 1/2” NPT conduit connection is also provided onthe left hand side of the enclosure. The three switch terminalsare clearly labeled “common”, “normally open” and “normallyclosed”. For switches supplied with leadwires, the following colorcoding applies:Manual DPDTReset (Option 1010)SPDT SWT1 SWT2Common Violet Violet YellowNormally Open Blue Blue OrangeNormally Closed Black Black RedGENERALBEFORE INSTALLING, CHECK THE SENSOR MODEL SELECTEDFOR COMPATIBILITY TO THE PROCESS MEDIA IN CONTACT WITHTHE SENSOR AND WETTED PARTS.The H100 and H100K differential pressure switches are activated whena bellows, diaphragm or piston sensor responds to a pressure change.This response, at a pre-determined set point, actuates a single snap-acting switch, converting the pressure signal into an electrical signal.Control set point may be varied by turning the internal adjustment hex.(See Adjustment -PART II).PROOF PRESSURE* LIMITS STATED IN THE LITERATURE AND ONNAMEPLATES MUST NEVER BE EXCEEDED, EVEN BY SURGESIN THE SYSTEM. OCCASIONAL OPERATION OF UNIT UP TOPROOF PRESSURE IS ACCEPTABLE (E.G., START-UP, TESTING).CONTINUOUS OPERATION SHOULD NOT EXCEED THE DESIGNATED OVERRANGE PRESSURE.*Proof PressureThe maximum pressure to which a pressure sensor may be occasionallysubjected, which causes no permanent damage (e.g., start-up, testing).The unit may require re-gapping.Tools NeededAdjustable WrenchScrewdriverHammer (for alternate wire knockouts)MOUNTINGINSTALL UNIT WHERE SHOCK, VIBRATION AND TEMPERATUREFLUCTUATIONS ARE MINIMAL. ORIENT UNIT SO THAT MOIS-TURE IS PREVENTED FROM ENTERING THE ENCLOSURE. IFUNIT IS BEING INSTALLED WHERE HEAVY CONDENSATION IS EXPECTED,VERTICAL MOUNTING (PRESSURE CONNECTION DOWN) IS REQUIRED. DONOT MOUNT IN AMBIENT TEMPERATURES EXCEEDING PUBLISHED LIMITS.Controls may be mounted and operated in anyposition. They may be surface mounted via the two mounting ears oneither side of the enclosure, or directly to a rigid pipe by using the pres-100 SeriesPressure SwitchTypes H100, H100K(Differential Pressure)IMP100-06Please read all instructional literature carefully and thoroughly before starting. Refer to the final page for the listing of RecommendedPractices, Liabilities and Warranties.Part I - InstallationU N I T E D E L E C T R I CC O N T R O L SInstallation and MaintenanceInstructions