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printed in u.s.a. 6/12 ? copyright 2012 sch neider electric all rights reserved. f-06491-32 application for two-position operation of dampers, valves, and other equipment which require the return to normal position upon power interruption. hazardous location models offer a sturdy cast aluminum case with bolted cover. they have two 3/4" pipe tapped openings for joints with rigid metal conduit. all wiring is brought out to separate terminals for ease of installation. these fact ory enclosure and actuator assemblies are underwriters laboratories listed. features ? compatible wit h most spst control devices ? spring return ? 24, 120, 208, and 240 vac models ? actuators with part number suffix "-500" are equipped with spdt auxiliary switch ? actuator has a rugged die cast aluminum housing with two 1/2? conduit openings ? hazardous location actuator housing has two 3/4" pipe taped openings for rigid metal conduit connection ? oil immersed motor and gear train applicable literature ? electric/electronic products catalog, f-27382 ? valve products catalog, f-27384 ? cross-reference guide, f-26789 ? av-29x valve linkage for hazardous location gear train actuators general instructions, f-27441. ? apparatus for hazardou s locations en-56-2, f-18451. ? av-390 series, valve linkage for gear train actuators general instructions, f-24376. ? material safety data sh eet (msds) for bcs-51-168 oil (until feb. 1989) two-position actuators general instructions MAX-305 & max-318 series max-405 through max-419 series ma6-3xx, ma6-4xx, ma7-4xx, ma8-3xx, ma8-4xx (hazardous locations) ma-3xx, ma5-318, ma-4xx, ma5-419 (standard) ? material safety data shee t (msds) for bcs-51-185 oil (until march 2002) (max-3xx-x-x-3 and max-4xx-x-x-3) ? material safety da ta sheet (msds) for bcs-51-185-1 oil (current) (max-3xx-x-x-4 and max-4xx-x-x-4) ? high temperature exposure performance (ul 555s) max-31x-x-x-4, max-41x- x-x-4 series actuators engineering information en-216, f-27068
2 ? copyright 2012 schneider elec tric all rights reserved. f-06491-32 specifications actuator inputs connections: coded screw terminals. control circuit: two-wire. power input: see table-1. actuator outputs torque: see table-1. shaft rotation: ma-305, ma-405, ma6-305, ma6-405, cw 180 when power is applied. ma-318, ma-41x, max-318, max-41x, cw 180 when power is applied. spring return: ccw to the original position when the actuator is de-energized. auxiliary switch (-500 models): spdt makes (or breaks) the circuit at the powered end of stroke. environment ambient temperature limits: shipping & storage, -40 to 136 f (-40 to 58 c). operating, -40 to 136 f (-40 to 58 c). humidity: 5 to 95% rh, non-condensing. location: nema type 4 when used with the gasket (provided) and water-tight conduit connectors (not provided), optional hazardous location models. agency listings: us standard ul 873, underwriters laboratories (file #e9429 xapx, temperature indicating and regulating equipment). candadian standard c22.2 no. 24: underwriters laboratories (file #e429 category xapx7, temperature indicating and regulating equipment). hazardous location models, ul file #e29291. designed for use in hazardous locations n.e.c., class 1, groups c and d, and class 2, groups e, f, and g. temperature code t6 for hazardous housing. table-1 model chart. part number power supply auxiliary switch a input watts va rated torque lb-in. (n-m) no load timing in seconds at 75 f (24 c) b mounting application vac hz running holding ma-305 24 60 no 25 56 56 16 (1.8) 20 any position (horizontal output shaft position preferred) damper actuators ma-305-500 yes ma-405 120 no 48 48 ma-405-500 yes ma-318 24 no 70 running 25 holding 92 32 60 (6.8) output shaft must be horizontal damper and valve actuators ma-318-500 yes ma-416 208 60 no 104 38 ma-416-500 yes ma-418 120 no 108 42 ma-418-500 yes ma-419 240 no 120 39 ma-419-500 yes ma5-419 50 no ma5-419-500 yes a 4.4 fla, 26.4 lra @ 24 or 120 vac; 2.4 fla, 13.2 lra @ 240 vac. b spring return timing with full load opp osing spring is approximately 60 sec.
f-06491-32 ? copyright 2012 schneider electric all rights reserved. 3 accessories damper only am-111 crank arm for 5/16" diameter damper shaft am-112 crank arm for 3/8" diameter damper shaft am-113 crank arm for 1/2" diameter damper shaft am-115 crank arm for 7/16" diameter damper shaft am-122 linkage connector straight type am-123 damper clip am-125 5/16" diameter x 20" damper rod am-125-048 5/16" diameter x 48" damper rod am-132 ball joint connector am-161 damper linkage kit am-161-1 damper linkage kit am-301 90 mounting bracket (not used with ma6-xxx, ma7-xxx, & ma8-xxx) valve only (to be used with 60 lb-in. (6.8 n-m) actuators only, excluding ma7-xxx & ma8-xxx) av-29 & av-300 linkage for 2-1/2" & 3" discontinued vb-9323 av-391 linkage for 1/2" to 2" vb-7xxx and 1/2" to 1-1/4" discontinued vb-9xxx av-392 linkage for 1-1/2" and 2? discontinued vb-9xxx av-395 linkage for 2-1/2" to 4" vb-931x or discontinued vb-92xx valve only (to be used with 60 lb-in. (6.8 n-m) ma7-xxx & ma8-xxx hazardous location actuators only) av-291 linkage for 1/2" to 2" vb-7xxx valves assembled with hazardous location actuator assemblies. av-295 linkage for 2-1/2" and 3" vb-9xxx valves assembled with hazardous location actuator assemblies. table-2 actuator part numbers for hazardous location applications. standard part numbers a hazardous location actuator assemblies part numbers b c d damper actuators valve actuators ma-305 ma6-305 ? ma-305-500 ? ? ma-405 ma6-405 ? ma-405-500 ma6-405-500 ? ma-318 ma6-318 ma8-318 ma-318-500 ma6-318-500 ma8-318-500 ma-416 ma6-416 ? ma-416-500 ma6-416-500 ? ma-418 ma6-418 ma8-418 ma-418-500 ma6-418-500 ma8-418-500 ma-419 ma6-419 ? ma-419-500 ma6-419-500 ? ma5-419 ma7-419 ? ma5-419-500 ma7-419-500 ? a max-31x-x-x-4 and max-41x-x-x-4 series actuators provi de significantly improved hi gh temperature exposure performance for use in smoke or fire dampers, or co mbination smoke and fire dampers. refer to engineering information en-216 (ul 555s), f-27068. b class 1, groups c & d, and class 2, groups e, f, and g hazardous locations; refer to en-56-2. c models for hazardous locations are only available as factory-built enclosure/actuator assemblies. d see standard actuator part number wiring diagrams for wiring terminations.
4 ? copyright 2012 schneider elec tric all rights reserved. f-06491-32 typical applications (wiring diagrams) figure-1 typical wiring for ma-305 and ma-405 series. figure-2 typical wiring for ma-318, ma-416, ma-418, and ma-419 series. 2 ma-305 ma-405 series actuator 1 actuator rotates 180 cw when thermostat or switch contacts are closed. actuator spring returns when thermostat or switch contacts are open. 2 aux. switch for -500 models thermostat or switch l1 or h l2 or g motor field coil 1 nc no com 3 2 4 ma-318, ma-416 ma-418, ma-419 series actuator 1 actuator rotates 180 cw when thermostat or switch contacts are closed. actuator spring returns when thermostat or switch contacts are open. 2 high input (running) 3 low input (holding) 4 aux. switch for -500 models no nc thermostat or switch l1 or h l2 or g 1 nc no com
f-06491-32 ? copyright 2012 schneider electric all rights reserved. 5 installation inspection inspect the package for damage. if damaged, not ify the appropriate carrier immediately. if undamaged, open the package and inspect the device for obvious damage. return damaged products. requirements ? job wiring diagrams ? tools (not provided): ? digital volt-ohm meter (dvm) ? appropriate screwdriver(s) for cover and mounting screws ? appropriate drill and drill bit for mounting screws ? appropriate wrenches for adjustment of damper and valve linkages ? appropriate accessories ? mounting screws (not provided) ? training: installer must be a qualified, experienced technician warning: ? disconnect the power supply (line power) before installation to prevent electrical shock and equipment damage. ? make all connections in accordance with the wiring diagram and in accordance with national and local electrical codes. use copper conductors only. caution: ? do not apply power to the unit unless the da mper linkage and/or the valve assembly have been installed. ? avoid locations where excessive oil, dust, mo isture, corrosive fumes or vibration, or an explosive atmosphere is pres ent. the actuator case is in tended primarily to provide a degree of protection against windblown dust, ra in, sleet, and external ice formation (nema type 4). mounting mount the actuator according to the following requirements: 1. allow a minimum of 6 " (152 mm) clearance behind the actuator for access to the wiring compartment. 2. locate the actuator in a weather-protected area. 3. to ensure water and weather resistance, install the cover gasket (provided) and use water-tight conduit fittings. dampers install the actuator and the damper linkage, so that 180 of actuator shaft rotation drives 90 of damper shaft rotation, as follows: actuator mounting and damper linkage installation 1. mount the actuator in an appropr iate position near the damper. note: ? ma-305 and ma-405 series actuators are not posi tion-sensitive, and in damper applications, may be mounted in any position. however, the upright position is preferred. ? ma-318, ma-416, ma-418, and ma-419 series actuators must be mounted so that the output shaft lies in a horizontal position. ? to the extent possible, positi on the actuator to optimize the length of the damper rod needed to link it with the damper. a damper rod that is too long is not rigid enough for good control, and a damper rod th at is too short makes it difficult to adjust the linkage. 2. install crank arms onto the driven shaft and th e actuator shaft. tigh ten the crank arm on the driven shaft. do not tighten the crank ar m on the actuator shaft at this time. 3. install a linkage connector onto the actuator shaft crank arm, at the prick point. refer to (figure-3) and (figure-4).
6 ? copyright 2012 schneider elec tric all rights reserved. f-06491-32 figure-3 location of prick point on crank arm. figure-4 180 actuator rotation driv ing a damper rotation of 90. 4. install a linkage connector onto the driven shaf t crank arm, at the end of the slot. refer to (figure-4). 5. install the damper rod in the linkage connecto rs on both crank arms and tighten the linkage connector screws finger-tight. caution: never attempt to turn the actuator shaf t with a wrench or a crank; this may damage the actuator. linkage adjustment 1. verify that the crank arm on the actuator shaft is loose. ro tate, by hand, the crank arm on the actuator to drive the linkag e and the damper shaft through its full stroke, to ensure proper damper action. 2. for normally closed dampers, proceed as follows: a. return the damper to the closed position. b. tighten the crank arm on the actuator shaft. c. loosen the screw on one of the linkage connectors. d. while pushing the damper closed, tighten t he linkage connector screws to secure the damper rod. 3. for normally open dampers, proceed as follows: a. move the damper to approximately 85 of the full open position. b. tighten the crank arm on the actuator shaft. c. tighten the linkage connector screws to secure the damper rod. 4. run the actuator back and forth through its full stroke and check for proper damper and linkage operation. adjust the linkage if required. caution: when linking an actuator to a damper, be sure that it can complete its full stroke. if the damper stops the actuator before it has reac hed its electrical limit of travel on the power stroke, the actuator may be permanently damaged. readj ust the linkage as necessary. prick point 12 3 slot provides adjustment from 7/8" to 3-1/8". actuator shaft 0 0 90 180 install connector at prick-point on crank arm driven shaft install connector at end of slot on crank arm
f-06491-32 ? copyright 2012 schneider electric all rights reserved. 7 valves note: when mounting an actuat or onto a valve, observe the following: ? allow 3 " (76 mm) of clearance above the assembled actuator and valve for the removal and reattachment of the actuator. ? always install single-seat valves with pressure under the seat. ? install all two-way valves so that they close aga inst the flow. a tag or an arrow on the valve body indicates proper flow direction. ? always install three-way mixing valves with two inlets and one outlet. ? always install three-way diverting valves with one inlet and two outlets. ? for steam applications only, mount the actuat or above the valve body at 45 from the vertical. ? ma-318, ma-416, ma-418, and ma-419 series actuators can be moun ted in any upright position above the centerline of the valve body . however, the output shaft must lie in a horizontal position. for detailed valve linkage installation instructions, refer to av-29x valve linkage for hazardous location gear train actuators general instructions, f-27441 or av-390 series, valve linkage for gear trai n actuators general instructions, f-24376. refer to figure-5 for the components of a typical valve installation of a standard actuator. for installing an actuator with a hazardous location housing, refer to figure-6. figure-5 typical components for valve installation of standard actuator. indicator screw front cover nylon bushing actuator mounting screws (3) mounting bracket valve body (vb-7xxx shown) plunger assembly connecting pin stem extension stem locknut packing nut mounting nut cover screws (2) indicator plunger cam 1 1 1 1 "c" ring 1 not included in av kits. 2 used with 1/2" through 2" valve bodies. 2
8 ? copyright 2012 schneider elec tric all rights reserved. f-06491-32 figure-6 typical components for valve installation of hazardous location actuator. indicator screw front cover nylon bushing actuator mounting screws (3) mounting bracket valve body (vb-7xxx shown) plunger assembly connecting pin stem extension stem locknut packing nut mounting nut cover screws (2) indicator plunger cam 1 1 1 not included in the linkage kit. 2 mounting screws attach the bracket to threaded mounting holes in the bottom of the hazardous location housing. 2 1 1
f-06491-32 ? copyright 2012 schneider electric all rights reserved. 9 wiring hazardous location models make all electrical connections to the assembly in accordance with the job wiring diagram, the national electric code article 500, and in compliance with the local electrical codes. two 3/4 " pipe tapped openings are provided in the housing for rigid conduit connections. it is recommended to insert a chase nipple from inside of the housing to prevent threads from cutting or damaging wiring. when wiring, take care to lay all leads in the wiring channel located just under the housing cover to protect the leads from any sharp edges which may be in the vicinity. the housing and the edge of the cover are stamped with the letter "o." when replacing the cover, the letters must be aligned with each other. warning: the cover-to-housing orientation must be maintained in order to preserve the integrity of the seal. failure to observe this warning can result in injury or death. 1. remove twelve cover screws and cover. place cover, machined surface up, in a protected location to avoid damage to machined surfaces. 2. make all wiring connections to actuator taking care to lay all leads in the wiring channel provided. 3. before enclosing the actuator, wipe machined su rfaces of housing clea n with a lint free cloth and apply one of the ul approved compounds. see note below. warning: failure to observe these warnings can result in injury or death. ? do not scrape, scratch, or use abras ives on the machined surfaces. ? ensure the surfaces are clean. ? use only the approved compounds listed below. 4. secure cover tight against the enclosure in the same position before removal with the twelve screws provided. note: underwriters laboratories has sanctioned the use of the following compounds on hazardous location ground joints: crouse-hinds ty pe osl lubricant, crouse-hinds type stl lubricant, or "no-oxid" oil, grade "d." two 1/2 " conduit knockouts are provided on the actuator case. refer to figure-7 fo r terminal locations. figure-7 actuator terminal locations. refer to table-3 for the selection of the proper gage wire for the length of the wire run. feed-through terminal bloc k case ground power terminals a ux. switch (-500 models) (shown with back cover removed) n.o. n.c. c l 1 l 2
10 ? copyright 2012 schneider elec tric all rights reserved. f-06491-32 table-3 power wire selection. checkout after the entire system has been installed and the actuator has been powered up, perform the following check for proper system operation. che ck for the correct operation of the damper while the actuator is being stroked. note: smoke control systems must be tested in accordance with nfpa standard 92a. 1. verify that the system wiring is properly connected and powered. 2. be sure the controller (manu al or automatic) is operatin g properly according to system requirements. 3. when the controller energizes th e actuator, the output shaft must run to the end of the stroke (180 cw). 4. when the controller de-energizes the actuator, the spring will return the output shaft to its original position. 5. the action of the auxiliary switch (-500 models only) shall be as follows: a. c makes to n.c. when t he actuator is de-energiz ed. refer to (figure-8). b. c makes to n.o. when the actuator is ene rgized and the output shaft reaches the end of the stroke. figure-8 action of auxiliary switch (-500 models only). theory of operation ma-305 and ma-405 series actuat or output shafts rotate 180 clockwise when energized and spring return counterclockwis e to 0 when de-energized. ma-31x and ma-41x series act uator output shafts rotate 170 clockwise when energized and spring return counterclockwise when de-energized. ma-305 and ma-405 series actuator motors are asse mbled to a gear train and stall at the end of the power stroke. ma-318, ma-416, ma-418, and ma-419 series ac tuators have an end of travel switch which reduces the running input from 70 watts to 25 watts at the end of clockwise shaft rotation. actuator series wire size awg maximum run a b ft (m) ma-305 14 122 (37) 12 191 (58) 10 305 (93) ma-405 14 2800 (853) ma-318 14 44 (13) 12 68 (21) 10 110 (34) ma-416, ma-418, ma-419 14 950 (290) 12 1580 (482) a each run has two wires. b the length given is for a maximum two-wire run, for one actuator. when multiple actuators are used, determine the maximum run for each actuator by dividing the num ber of actuators into the corresponding maximum run. n.c. (normally closed) n.o. (normally open) c (common) n.o. makes when actuator is energized and output shaft reaches end of stroke.
f-06491-32 ? copyright 2012 schneider electric all rights reserved. 11 maintenance caution: ma-300 series and ma-400 series actuators th at are used in applications where they are energized for extend ed periods of time must be electrically cycled at least once every six months to ensure correct operation. regular maintenance of the total system is recommended to assure sustained, optimum performance. field repair none. replace an inoperative ac tuator with a functional unit. dimensional data figure-9 dimensions of ma-3xx, ma5-318, ma -4xx, and ma5-419 (standard) actuators. 1/4 (6) 4-3/4 (121) 15/16 (24) 3-3/8 (86) 4-1/2 (114) 1-1/2 (38) 2-1/4 (57) 4-1/4 (108) 5-5/8 (143) 3-7/8 (98) 4 (102) 5-3/4 (146) 5-3/8 (136) 1-7/16 (37) 4-3/4 (121) 1/2 (13) dia. shaft 17/64 (7) dia. hole (1 of 3) dimensions are in inches (mm). 1/2 (13) conduit opening on each side 13/16 (21)
? copyright 2012, schneider electric all brand names, trademarks and registered trademarks are the property of their respective owners. information contained within this document is subject to change without notice. f-06491-32 schneider electric 1354 clifford avenue p.o. box 2940 loves park, il 61132-2940 www.schneider-elect ric.com/buildings figure-10 dimensions of ma6-3xx, ma6-4xx, and ma 7-4xx damper actuators for hazardous locations. figure-11 dimensions of ma7-4xx, ma8-3xx, and ma8-4xx valve actuators for hazardous locations. 4-1/2 (114) 15/16 (24) 4-7/32 (107) 8-1/4 (209) 1/2 (13) dia. shaft dimensions are in inches (mm). 4-13/32 (112) 9 (228) 1/4 (6) 2-15/16 (51) 2-1/8 (54) 3/4 (19) pipe tap on each side 9 (229) 9-9/16 (243) 10-5/8 (270) 3-1/16 (78) 6-1/8 (156) 7-1/2 (190) 21/64 (8) dia. hole (1 of 3) 3-3/4 (95) 2-1/8 (54) 7 (178) 4-1/4 (108) 8-1/4 (209) dimensions are in inches (mm). 4-13/32 (112) 9 (228) 1/4 (6) 4-1/2 (114) 2-15/16 (51) 2-1/8 (54) 3/4 (19) pipe tap on each side 9 (229) 10-13/16 (275) 1/8 (3)

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