M9203-Bxx-2(Z) Series On/Off Electric Spring Return Actuators Installation Instructions1 Refer to the QuickLIT website for the most up-to-date version of this document.ApplicationsThe M9203-Bxx-2(Z) Series On/Off Electric SpringReturn Actuators are direct-mount actuators that operate on AC24V power at 50/60Hz, DC24V power, or AC85to 264 V power at 50/60Hz. These bidirectional actuators do not require a damper linkage, and are easily installed on round shafts from1/4to 1/2in.(6to12mm) or square shafts from1/4to5/16in.(6to8mm) using the standard shaft clamp included with the actuator. A single M9203-Bxx-2(Z) Series On/Off Electric SpringReturn Actuator provides 27lb·in.(3N·m) running and spring return torque. An integral line voltage auxiliary switch, available only on the M9203-xxB-2(Z) models, indicates end-stop position, or performs switching functions within the selected rotation range. InstallationThe M9203-Bxx-2(Z) Series On/Off Electric Spring Return Actuators mount directly to the surface in any convenient orientation using two No.M3.5 x 9.5 mm self-drilling sheet metal screws and the anti-rotation bracket (parts included with the actuator). No additional linkages or couplers are required. Electrical connections are color-coded and identified with numbers permanently marked on the actuator cable. A tag on the actuator cable identifies the electrical connections and wiring details are included on the actuator housing.Parts Included•M9203-Bxx-2(Z) actuator•M9203-603 adjustable stop kit•M9000-604 anti-rotation bracket with twoNo.M3.5 x 9.5 mm, pan-head, cross-recessed (Phillips), self-drilling and self-tapping screwsIMPORTANT:Use this M9203-Bxx-2(Z) SeriesOn/Off Electric Spring Return Actuator only to control equipment under normal operating conditions. Where failure or malfunction of the actuator could lead to personal injury or property damage to the controlled equipment or other property, additional precautions must be designed into the control system. Incorporate and maintain other devices, such as supervisory or alarm systems or safety or limit controls, intended to warn of or protect against failure or malfunction of the actuator.IMPORTANT :Utiliser ce M9203-Bxx-2(Z) Series On/Off Electric Spring Return Actuator uniquement pour commander des équipements dans des conditions normales de fonctionnement. Lorsqu'une défaillance ou un dysfonctionnement du actuator risque de provoquer des blessures ou d'endommager l'équipement contrôlé ou un autre équipement, la conception du système de contrôle doit intégrer des dispositifs de protection supplémentaires. Veiller dans ce cas à intégrer de façon permanente d'autres dispositifs, tels que des systèmes de supervision ou d'alarme, ou des dispositifs de sécurité ou de limitation, ayant une fonction d'avertissement ou de protection en cas de défaillance ou de dysfonctionnement du actuator.IMPORTANT:Do not install or use this M9203-Bxx-2 Series On/Off Electric Spring Return Actuator in or near environments where corrosive substances or vapors could be present. Exposure of the electric actuator to corrosive environments may damage the internal components of the device, and will void the warranty.M9203-Bxx-2(Z) Series On/Off Electric Spring Return ActuatorsInstallation InstructionsM9203-BUA-2, M9203-BUB-2,M9203-BGA-2, M9203-BGB-2M9203-BUA-2Z, M9203-BUB-2ZPart No. 34-1791-24, Rev. EIssued June 2018*34179124D*34-1791-24, Rev. EM9203-Bxx-2(Z) Series On/Off Electric Spring Return Actuators Installation Instructions2Special Tools Needed•10 mm wrench/socket•drill with Phillips bit, driver size 1DimensionsFigure 1: M9203-Bxx-2 Series On/Off Electric Spring Return Actuator Dimensions, in. (mm)103090507010309050701/4 (6.5) Slot Width5/16 (8) Slot Length4-15/64(107.5)25/32(20)3-15/16(82)15/64(6)2-1/4(57.5)45/64(18)1-1/8(28.7)1-35/64(39.2)47/64(18.7)FIG:M9203_Bxx_dim4-55/64(123.6)6-3/8(162)M9203-Bxx-2(Z) Series On/Off Electric Spring Return Actuators Installation Instructions3Accessories MountingThe M9203-Bxx-2(Z) Series On/Off Electric Spring Return Actuators can be easily installed on dampers with round shafts from 1/4to1/2in.(6to12mm) or square shafts from 1/4to5/16in.(6to8mm) using the standard shaft coupler included with the actuator. If the damper shaft extends less than 3.31in.(84mm), see the Removable Coupler section for further instructions. If the damper shaft extends less than 0.79in.(20mm), install a shaft extension recommended by the damper manufacturer.Table 1: Accessories and Replacement Parts (Order Separately)Code NumberDescriptionDMPR-KC0037in. (178mm) Blade Pin Extension (without bracket) for JohnsonControls® Direct-Mount Damper Applications (quantity 1)Note: Available with damper and may be ordered separatelyM9000-322Weathershield Kit for Damper Application of M9203, M9308, and M9310 Series Electric Actuators (quantity 1)M9000-400Jackshaft Linkage Adapter Kit (quantity 1)M9000-560Ball Valve Linkage Kit for applying M9104, M9203, and M9208 Series Electric Actuators to VG1000 Series Valves (quantity 1)M9000-561Thermal Barrier Kit for M9000-560 Ball Valve Linkage. Extends M(VA)9104, M(VA)9203, and M(VA)9208 Series Electric Spring Return Actuators applications to include low pressure steam (quantity 1)M9000-604Replacement Anti-Rotation Bracket Kit for M9203, M9208, M9220, M9308, M9310, M9320, and M9335 Series Electric Actuators (quantity 1)M9000-606Position Indicator for Damper Applications (quantity 5)M9000-607Position Indicator for VG1000 Series Ball Valve Applications (quantity 5)M9203-100Remote Mounting Kit with Crankarm Kit (quantity 1)M9203-110Universal Mounting Kit without Crankarm Kit (quantity 1)M9203-115Universal Mounting Kit with Crankarm Kit (quantity 1)M9203-150Crankarm Kit (quantity 1)M9203-250Remote Mounting Kit with Crankarm Kit and Damper Linkage for D1300 Dampers (quantity 1)M9203-601Replacement Standard Coupler Kit (with Retainer) for Mounting M9203 Series Electric SpringReturn Actuators (quantity 1)M9203-602Replacement Retainer for M9203 Series Electric Spring Return Actuators (quantity 5)M9203-603Adjustable Stop Kit for M9203 Series Electric Spring Return Actuators (quantity 1)M9203-Bxx-2(Z) Series On/Off Electric Spring Return Actuators Installation Instructions4Counterclockwise (CCW) SpringReturn Direction – Clockwise (CW) Powered OperationFor CCW springreturn direction, mount the actuator to the damper shaft so that Side A of the actuator is away from the damper as illustrated in Figure2. With power applied, the actuator drives CW from the 0° position and spring returns CCW. Clockwise (CW) Spring Return Direction – Counterclockwise (CCW) Powered OperationFor CW spring return direction, mount the actuator to the damper shaft so that Side B of the actuator is away from the damper as illustrated in Figure3. With power applied, the actuator drives CCW from the 0° position and spring returns CW.Removable CouplerIf the damper shaft extends less than 3.31in.(84mm), mount the coupler on the face of the actuator closest to the damper.Figure 2: Actuator Side A 309050703090507010FIG:M9203_Bxx_AFigure 3: Actuator Side B9070105030FIG:M9203_Bxx_BM9203-Bxx-2(Z) Series On/Off Electric Spring Return Actuators Installation Instructions5If the damper shaft extends less than 0.79in.(20mm), a shaft extension is required to mount the actuator.To change the coupler’s position, see Figure4 and proceed as follows:1.Mount the coupler on either Side A or Side B of the actuator as determined by the shaft length.2.Snap the locking clip securely into the coupler retention groove to retain the coupler.Mounting the ActuatorTo mount the actuator, proceed as follows:1.See the dimensions in Figure5 and Table2 to ensure the correct positioning of the anti-rotation bracket.2.Bend or cut the anti-rotation bracket to fit the damper frame or duct as illustrated in Figure6.Note:The anti-rotation bracket can be bent to fit a round damper.3.Mark or drill mounting holes in the damper frame or duct using the anti-rotation bracket as a guide (based on the measurements obtained in Table2 and Figure5).Table 2: Dimensions from Anti-Rotation Bracket to Shaft CenterShaft Diameter,in. (mm)Dimension A,in. (mm)Dimension B,in. (mm)1/4to1/2 (6to12)4-27/32 (123)3-5/8 (92)IMPORTANT:The tab on the anti-rotation bracket must fit midpoint in the actuator slot. Positioning the tab midpoint in the slot prevents actuator binding and premature wear, and makes actuator removal easier.Figure 4: Changing the Coupler Position FIG:exp_cplrFigure 5: Positioning the Anti-Rotation Bracket309050703090507030905070309050701010FIG:M9203_Bxx_brktDIM. ADIM. BM9203-Bxx-2(Z) Series On/Off Electric Spring Return Actuators Installation Instructions64.Secure the anti-rotation bracket to the damper frame or duct using the two No.M3.5 x 9.5 mm self-drilling sheet metal screws provided.5.Slide the actuator onto the damper shaft, and position the anti-rotation bracket tab into the slot at the bottom of the actuator as illustrated in Figure6.6.Rotate the damper blade(s) to the desired position if the power is lost. 7.Hold the actuator perpendicular to the damper shaft. Evenly hand-tighten each nut on the coupler U-bolt, then torque the coupler U-bolt nuts to 100to125lb·in.(11 to14 N·m).8.Apply power long enough for the actuator to travel a full stroke. Verify that the actuator rotates freely throughout the range.Limiting Rotation Range Using M9203-603 Adjustable Stop KitThe actuator is factory set for 95° rotation, and its range is limited in 5° increments to a minimum of 35°. A stroke-limiting stop can be attached in the field to the shaft coupler side of the actuator to reduce the rotation range. Attaching the stroke-limiting stop in the furthest mounting position reduces the rotation range of the actuator by 5°. Each progressive mounting position reduces the rotation range an additional 5°.1.Check that the damper blade is visible or its position is permanently marked on the end of the damper shaft, as illustrated in Figure7.IMPORTANT:Do not overtighten the mounting screws to avoid stripping the threads. Be certain that the tab on the anti-rotation bracket remains properly positioned in the slot on the actuator, and that the actuator remains parallel to the mounting surface.Figure 6: Anti-Rotation Mounting Bracket FIG:M9203_ Anti-Rotn_Mntg_Brkt_Posn2-1/4(57.5)3-1/4(82.5)Anti-Rotation BracketDamper FrameSelf-Drilling Sheet Metal Screws (2)Figure 7: Damper Position FIG:dampersM9203-Bxx-2(Z) Series On/Off Electric Spring Return Actuators Installation Instructions72.Position the stroke-limiting stop in the serrated slot with its leading edge at the scale position matching the desired stroke.3.The product label marks hole positions for the M3-0.5x8mm self-tapping screw provided with the adjustable stop kit. Drive the screw through the slot in the adjustable stop and into the actuator face over a marked hole position. (SeeFigure8.)Note:The minimum rotation range is 35°.WiringSee Figure9 and Figure10 to wire the applicable M9203-Bxx-2(Z)Series model.Figure 8: Limiting Rotation Range FIG:strk_limitFigure 9: Control Wiring AC 85...264 V 50/60 HzL1NWHTBLK21AC 24 V 50/60DC 24 VREDBLK21+-~FIG:M9203Bxx2_wiringM9203-Bxx-2(Z) Series On/Off Electric Spring Return Actuators Installation Instructions8 !WARNING: Risk of Electric Shock.Disconnect or isolate all power supplies before making electrical connections. More than one disconnection or isolation may be required to completely de-energize equipment. Contact with components carrying hazardous voltage can cause electric shock and may result in severe personal injury or death.AVERTISSEMENT : Risque de décharge électrique.Débrancher ou isoler toute alimentation avant de réaliser un branchement électrique. Plusieurs isolations et débranchements sont peut-être nécessaires pour -couper entièrement l'alimentation de l'équipement. Tout contact avec des composants conducteurs de tensions dangereuses risque d'entraîner une décharge électrique et de provoquer des blessures graves, voire mortelles.!CAUTION: Risk of Property Damage.Do not apply power to the system before checking all wiring connections. Short circuited or improperly connected wires may result in permanent damage to the equipment.MISE EN GARDE : Risque de dégâts matériels.Ne pas mettre le système sous tension avant d'avoir vérifié tous les raccords de câblage. Des fils formant un court-circuit ou connectés de façon incorrecte risquent d'endommager irrémédiablement l'équipement.!CAUTION: Risk of Property Damage.Insulate and secure each unused wire lead before applying power to the actuator. Failure to insulate and secure each unused wire lead may result in property damage.MISE EN GARDE : Risque de dégâts matériels.Isoler et protéger chaque fil non utilisé avant de mettre l'actuator sous tension. Le non-respect de cette obligation d'isolation et de protection de chaque fil non utilisé risque d'entraîner des dégâts matériels.IMPORTANT:Make all wiring connections in accordance with the National Electrical Code and local regulations. Use proper Electrostatic Discharge (ESD) precautions during installation and servicing to avoid damaging the actuator’s electronic circuits.Figure 10: Auxiliary Switch Wiring Diagram COMNCNO21212322212223BLK/REDBLK/BLUBLK/GRYS1FIG:aux_wringM9203-Bxx-2(Z) Series On/Off Electric Spring Return Actuators Installation Instructions9Using ConduitAll M9203-xxx-2(Z) Series Actuators accept 1/2in. threaded electrician’s fittings. 1.Feed the actuator cables through the field supplied electrician’s fittings and conduit.2.Thread the electrician’s fitting into the actuator and secure the conduit to the fitting in accordance with local building code requirements.Setup and AdjustmentsAuxiliary Switch (M9203-xxB-x Models)The M9203-xxB-x models include one integral auxiliary switch with a switch adjuster accessible on either face of the actuator (see Figure2 and Figure3). The factory setting for the Auxiliary Switch is 11°closing (relative to the 0to90° rotation range as printed on the product label). See the Technical Specifications table for the auxiliary switch ratings.The switch point is continuously adjustable through the actuator’s rotation range. For the most accurate switch positioning, see Figure12 and use the method in the following example.To change the switch point, proceed as follows:1.Position the actuator in the full spring return position.Note:The switch is factory set to trip when the actuator reaches the 11° position.!WARNING: Risk of Electric Shock and Property Damage.Insulate and secure each unused wire lead before applying power to the actuator. Failure to insulate and secure each unused wire lead may result in property damage, electric shock, and severe personal injury or death.AVERTISSEMENT : Risque de décharge électrique et dégâts matériels.Isoler et protéger chaque fil non utilisé avant de mettre l'actuator sous tension. Le non-respect de cette obligation d'isolation et de protection de chaque fil non utilisé risque d'entraîner des dégâts matériels, des décharges électriques et des blessures graves, voire mortelles.Figure 11: Adding Flexible Metal Conduit FIG:add_cndtNext >