Eaton Crouse-Hinds Flex-Station EDS Series Installation & Maintenance Information

IF 1418 • 02/15 Copyright © 2015, Eaton’s Crouse-Hinds Business Page 2ASSEMBLY OF PUSHBUTTONSFigure 2. Inside View of Two Operator Cover• Knowing the back box configuration, select the proper sizecover (1, 2 or 3 device) for application.• Select the DL legend plates with proper markings or markingwindows. Orient them horizontally on the cover as desired.Note a marking window is provided for field markingcustomer’s specific terms.• Reference Table 1 to determine the subassemblies needed tosuit your specific requirements.Single pushbutton with one contact block• Install pushbutton operator assembly to the front side of thecover by threading it down tight to the cover in the desiredlocation. Use a DL legend plate if required as noted inASSEMBLY OF PUSHBUTTONS.• Position the lockout slots on the guard so it does not interferewith an adjacent device. Note the operator may be backed offup to ½ turn to orient the lockout slots without defeating theexplosionproof integrity.• On the inside of the cover, fasten the mounting block to thethreaded portion of the pushbutton assembly. Orient themounting block as shown in Figure 2. This step will allowthe contact block to be in the proper position. Tighten theset-screw thereby locking the pushbutton assembly to thecover, see Figure 3.• Assemble the necessary contact block per instructions inINSTALLATION OF CONTACT BLOCK section.Single pushbutton with two contact blocks• Install pushbutton sub-assembly to the front side of the coverby threading it down tight to the cover in the desired location.Use a DL legend plate if required as noted above. Note thatthe guards with lockout holes should allow a hasp of the lockto not interfere with an adjoining device.• Fasten the mounting block to the inside of the cover. Orientthe mounting block so that the contact blocks will be in thedesired position, see Figure 2. Tighten the set-screw therebylocking the pushbutton assembly to the cover, see Figure 4 onnext page. Using the one #6-32 x 5/16 pan head screw andlock washer, fasten the double contact block actuator to theplunger of the pushbutton operator assembly. Next, fasten themounting plate to the mounting block using the two #4-40 panhead screws provided.• Assemble the necessary contact blocks per instructions inINSTALLATION OF CONTACT BLOCK section.Double pushbuttons• Install double pushbutton bearing and spring washer to thefront side of the cover by threading it down tight to the coverin the desired location, see Figure 5. If a DL legend plate isrequired, first position the legend plate onto the cover then thespring washer. Thread the bearing into place. Next, positionthe pushbutton guard onto the front of the cover with onerectangular opening above the other. Using the two #5-40 x3/16 screws, fasten the guard so that it is square to the cover.On the inside of the cover, thread the mounting block to thebearing. Orient the mounting block so that the contact blockswill be in the desired position, see Figure 2.Tighten the set-screw thereby locking the pushbuttonassembly to the cover. From the inside of the cover, insert thetwo plungers through the pass through holes in the bearing.• On the outside of the cover, place one spring onto eachplunger. Using a #6-32 x 3/8 countersunk screw, fastenthe proper colored pushbutton button onto the end of eachplunger in the operator location as required. Next, fasten themounting plate to the mounting block using the two #4-40 x1/4 pan head screws provided.• Assemble the necessary contact blocks per instructions inINSTALLATION OF CONTACT BLOCK section.Description Number of Sub-assemblycontact blocks catalog number(ESWP126)Single pushbutton 1 DEV11Single pushbutton– momentary 1 DEV11-S111Single mushroom headpushbutton with lockout 1 DEV11-S153Single mushroom headpushbutton – maintained w/ lockout 1 DEV11-S769Single pushbutton – red 1 DEV11 RSingle pushbutton – green 1 DEV11 GSingle pushbutton 2 DEV12Single pushbutton –momentary 2 DEV12-S111Single mushroom headpushbutton with lockout 2 DEV12-S153Single mushroom headpushbutton – maintained w/ lockout 2 DEV12-S769Single pushbutton – red 2 DEV12 RSingle pushbutton – green 2 DEV12 GDouble pushbutton 2 DEV22Double pushbutton – red 2 DEV22 RDouble pushbutton – green 2 DEV22 GTwo position selector switch 2 DEV42*Three position selector switch –center OFF 2 DEV43*Three position selector switch 2 DEV44*Table 1 * Including all selector switchoptionsFigure 3. Assembly of Single Pushbutton OperatorWith 1 Contact BlockPushbutton operator(lockout version shown)Legend plateCover(cut-away shown)Mounting block1/16” hex head set screwSpring WasherFLEX-STATION™ SERIES CONTROL STATIONSInstallation & Maintenance InformationSAVE THESE INSTRUCTIONS FOR FUTURE REFERENCEIF 1418IF 1418 • 02/15 Copyright © 2015, Eaton’s Crouse-Hinds Business Page 1APPLICATIONThe Flex-Station Series control devices are used in conjunctionwith magnetic starters or contactors for remote control ofmotors and to visually indicate that the desired function is beingperformed.The pushbutton stations, selector switches and factory sealedpilot lights are used separately or in combinations with a varietyof standard features and special options available.When used with an EFS/EFSC series of back box theseassemblies are suitable for use in Class I, Groups B, C andD (Division 1 and 2), Class II, Groups E, F and G and Class IIIhazardous locations, as defined by the National Electrical Code®(NEC). When used with an EDS/EDSC series of back box theseassemblies are suitable for use in Class I, Groups B (Division 2only), and C & D (Division 1 and 2), Class II, Groups E, F and Gand Class III hazardous locations.EDS SErIES SINgLE gANg EDS SErIES TYPICAL BODY SIDE VIEW EDS SErIES TWO gANgEFS SErIES TYPICAL BODY SIDE VIEW EFS SErIES SINgLE gANgHub Dead End Thru Feed Dim. Dim.Size Cat. # Cat. # a b1/2”* EDS171 EDSC171 3/4 13/163/4” EDS271 EDSC271 7/8 13/161” EDS371 EDSC371 1 15/16Hub Dead End Through FeedSize Cat. # Cat. #1/2”* EDS171 EDSC1713/4” EDS271 EDSC2711” EDS371 EDSC371Hub Dead End Through FeedSize Cat. # Cat. #1/2”* EDS172 EDSC1723/4” EDS272 EDSC2721” EDS372 EDSC372Hub Dead End Thru Feed Dim. Dim.Size Cat. # Cat. # a b1/2”* EFS171 EFSC171 1 15/163/4” EFS271 EFSC271 1 15/161” EFS371 EFSC371 1 15/16Hub Dead End Through FeedSize Cat. # Cat. #1/2”* EFS172 EFSC1723/4” EFS272 EFSC2721” EFS372 EFSC372EDS, EDSC, EFS and EFSC DimensionsINSTALLATION OF BACK BOX1. Select a mounting location that will provide suitable strengthand rigidity for supporting all contained wiring and controldevices. Figure 1 shows the mounting dimensions of all EFS andEDS back boxes. Drill and tap mounting holes in this location forthe 5/16 – 18 bolts.2. Securely fasten the device body to the mounting surface,then attach the body into the conduit system.3. Pull supply wires into the enclosure, making them longenough to make the required connections. Each conductorshould be long enough to extend at least 3 inches outside thecover opening.4. After selecting the proper cover assembly configuration, makethe electrical connection utilizing the wiring scheme establishedfor your system. See Assembly of Pushbuttons and Pilot Lightsfor instructions on how to assemble the cover assemblies.Disassembly of internal components may be required. SeeFigures 9 and 10 for wiring diagrams for the pushbuttons andpilot lights respectively.5. When cover assembly with operators is completelyassembled per below steps, test wiring for correctness withcontinuity checks and also for unwanted grounds with aninsulation resistance tester.6. Carefully assemble cover assembly to the device body withthe cover screws. Check the tightness of the cover screws toensure that the cover assembly is securely fastened.* Reducers required.WArNINgTo prevent explosions and shock hazard, electrical power mustbe OFF before and during installation and maintenance.WArNINgTo ensure proper installation, hazardous location informationindicating the class and group the product is approved foris marked on the nameplate of each device. Conduit sealingfittings may be required to be installed to comply with therequirements of the latest edition of the NEC, Section 501-5and/or 502-5 plus any other applicable standards. Reviewnameplate for specific information.1716332152F 32WArNINgTo avoid explosions, check for dirt, grit or other foreignmaterial on the mating surfaces of the cover and the back box.Be certain that each surface is wiped completely clean beforeassembling. Surfaces must seat fully against each other toprovide a proper explosionproof joint.Mounting block positionfor 2 contact blocksMounting block position forsingle contact block or pilotlight using a transformerDouble contactblock actuatorFigure 4. Assembly of Single Pushbutton Operatorwith 2 Contact BlocksPushbutton operator(lockout version shown)Legend plateCover(cut-away shown)Mounting block1/16” hex head set screwDouble contactblock actuatorLock washer #6 – 32 screwMounting plate#4 – 40 screwSpring Washer