DESCRIPTION

The MO953 and MP953 Pneumatic Valve Actuators(“Actuators”) are used with V5011 and V5013 Valves andcan control older steam and water valves via adapters. TheM0953A-D Actuators are functionally identical to theMP953A-D Actuators. Therefore, most of this sheet isdirected to the MP953 Actuators.

MP953A and B Actuators use a Gradutrol Relay forpositioning, and the MP953E and MP953F Actuators use apositive positioner. The relay and the positioner function inessentially the same way. Positivepositionerretrofitkitsareavailable for MP953A and B Actuators (seeACCESSORIES).

APPLICATION

These Actuators operate the V5011 and V5013 Valvesand certain other coil, line, and zone valves that

GENERAL

proportionally control steam or hot and cold liquids inHVAC systems.

SPECIFICATIONS

MODELS:MP953A-Direct-acting with Gradutrol RelayMP953B-Reverse-acting with Gradutrol RelayMP953C-Direct-acting without positionerMP953D-Reverse-acting without positionerMP953E-Direct-acting with positive positionerMP953F-Reverse-acting with positive positioner

MAXIMUM SAFE AIR PRESSURE25 psi (172 kPa)

See Table 1 for additional specifications.

Table 1. MO953/MP953 Specifications.

MP953 I MO953 I Size in

Device Type Active Inactive Act ive Inact ive In . (mm)

Direct a c t i n g - A1087 A1004 A1210 - A l 5 (127)

with Gradutrol - Al095 A1012 Al228 - A2

Relay

A

I

- All78 A1053 - A7

- A1202 All86 A1061 - A8 13 (330)

with Gradutrol

iCl067 I- C l 0 6 7 C3XH 8 (203)

Cl075 I - C l 0 7 5 C3XK

- Cl141 - C9XH 5 (127)

- Cl158 - C9XK

112 (13) 160 (71)

314 (19)

314 (19)

l-1/2 (38)

314 (19)

l-1/2 (38)

314 (19)

103)

l/2 (13) 2-7 (14-48) No

8-l 2 (55-83)

1 3-91 75-5500

Table 1. MO953hW53 Specifications (Continued).

MP953 MO953 Sh?In

Device Type Active 1 Inactive Active 1 Inactive In (mm)- I Cl166 - I c9xL 5 (127)

Travel in

In (mm)

1n (13)

314 (19)Direct acting

no Relay orpositioner

(Cant)

8-12 (55-83)

4-l 1 (28-76)

250 (121) 3-7 (21-48)8-12 (55-83)

4-l 1(28-76)

160 (71) 3-7 (21-48)

8-12 (55-83)

4-l 1 (28-76)

8 (203)

- Cl414 - -

C l 4 7 1 Cl125 Cl471 C8XH 13 (330)I l-l/2 (38)

C l 4 8 9 Cl133 Cl489 C8XL

Cl554 - Cl554 -C l 5 6 2 - C l 5 6 2 -

314 (19)

7-118 (181)

- D1206 D1206t -- D1214 D1214t -

D1222 - D1222 -

D1230

D1248

D1255El301

El319

Direct acting

with positive

positioner

l-112 (38)

El327

El277

El285

El293

- - -- - - 8 (203)

El368

El376

El384

1-K (38)El392

El400

- - - 13 (330)- - -

- - - !3 (330)

El418

El427 - I- I- IEl435

El443 - I- I- IReverse acting F1119 - - - 7 (180)

with positive FllOl - - -

wsitioner F1093 - - -

10 (69)

160 (71) 10 (69) No,

*Diaphragm color indicates maximum temperature:Black (Neoprenetl6OF (71C)Black with White Dot (Ethylene Propylene-250F (121C)

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OPERATION

In a direct-acting (n.o. valve) system, an increase incontrol (branch/pilot) air pressure forces the Actuatordiaphragm and cup assembly downward, forcing the valvestem down to proportionally close off the flow through thevalve (Fig. 1).

In a reverse-acting (nc. valve) system, an increase incontrol (branch/pilot) air pressure forces the Actuatordiaphragm and cup assembly upwards, forcing the valvestem up to proportionally increase the flow through thevalve.

In Actuators without Gradutrol Relays or positivepositioners, branchline pressure is applied to thediaphragm. In Actuators with Gradutrol Relays or positivepositioners, up to full main air pressure is applied to thediaphragm to ensure the valve is positioned proportionallyto the pilot pressure (the branchline pressure output fromthe controlling device).

1 THERMOSTAT

POSITIONER

Mius

Fig. 1. Typical Direct-Acting MP953 Operation.

MAINTENANCE

EQUIPMENT NEEDED

- Commercial cleaning solvent or degreaser- Pressure Gage 14003519 (0 to 30 psi [0 to 207 kPa])- Wrench 301572A for MP953A and B

VISUAL INSPECTION

Check periodically for leaks, loose fittings, and othervisible problems.

CLEANING

Clean the Actuator with a commercial cleaning solvent ordegreaser.

A WARNING ACareless handling of solvents can cause permanentrespiratory or skin damage. Avoid prolonged exposure tosolvents.

OPERATIONAL CHECK 2

Vary the branchline (pilot) pressure through theoperational range of the Actuator in both directions. Thevalve should open and close smoothly.

ADJUSTMENTS

CHECK ADJUSTMENT ON MP953A, B, E, F

Install gages in the main and pilot air lines.Main air pressure should be greater than or equal to thetop of the sequencing range (span): 13 psi (90 kPa) isthe minimum main pressure for the device to function.Slowly increase pilot pressure and note the pressure atwhich the valve stem begins to travel. This pressureshould be within kO.75 psi (5 kPa) of the start pointsetting of theMP953AandB‘ForMP953EandF, thepressure should be within +l psi (7 kPa) of the startpoint.Continue increasing the pilot pressure until the valvestem stops traveling. This pressure should be the startpoint pressure plus the range (span) setting.

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SET OPERATING RANGE

MP953A, B

1,

2.

Use Wrench 301572A to loosen the cover lockingscrew (Fig. 2).Unscrew the start point adjustment knob until threadis disengaged. Remove knob.a. For 3 psi (21 kPa) range, back all range adjustment

screws off to friction stop.b. For 5 psi (34 kPa) range, back only the black range

adjustment screws to stop and tighten the outer,cadmium-plated range adjustment screws.

c. For 10 psi (69 kPa) range, tighten all rangeadjustment screws.

MP953E, F

Change the operating range of MP953E and F byreplacing the feedback spring with one for the desired range(see REPAIR).

ADJUST START POINT

MP953A, B

RANGE ADJUSTMENT SCREWS(BLANK) - (3)

START POINTADJUSTMENT

E ADJUSTMENT

M IUM PLATED) -

RANGEADJUSTMENTINSTRUCTIONSSHOWN HERE

RELA‘i BODY 8817-I

Fig. 2. Adjustment Points of M0953/MP953A and BGradutrol Relay.

Reinstall setpoint knob.Tighten knob by turning it until it is seated on relaybody (Fig. 2).Loosen knob (maximum of one turn) until start pointof correct scale range lines up with start pointindicator.Tighten knob locking screw until it engages relaybody. Do not overtighten.

MP953E, F

Set the start point on the positioner to the value shown onthe job drawings. Critical applications and feedback springchanges mightrequire fine-tuning the start point. Each clickof the start point knob will adjust the start point 0.25 psi (1.7kPa).

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TROUBLESHOOTING

EQUIPMENT NEEDED

Troubleshooting procedures require Pressure Gage14003519 (0 to 30 psi [O to 207 kPa]).

SYMPTOMS AND CORRECTIVEACTION

Figures 3 and 4 show troubleshooting flowcharts.

CHECK THAT ACTUATORIS SECURELY MOUNTED

AND STEM EU-lTON ISPROPERLY LATCHED

NOf

PRESSURETO

ADOES

RANGE VALUE

LOOSEN POSiTlONERSETPOINT COVER. SLOWLY

TURN COVER SCALE TOBELOWZERO START POINT.

ADJUST POSITIONERSTART POINT DIALTO

MINIMUM VALUE

I

RECAUBRATEPOSITIONER START

POINT IF NECESSARY

NOY

REMOVE ANY FOREIGNMATERIAL; AND/ORREPAIR DISC, SEAT.AND STEM; AND/OR

REPACK VALVE

Fig. 3. Troubleshooting Flowchart for MP953A, B, E, F (with Gradutrol Relay/Positioner).

5

IS SECURELY h4OUNTEDAND STEM 6UlTON IsPROPERLY LATCHED

NO I

ADEQUATE FORCOMPLETE

REPLACE ACTUATORDIAPHRAGM AND/OR

SLEEVE

S-EM MOVE

REMOVE ANY FOREIGNMATERIAL; AND/ORREPAIR DISC, SEAT,AND STEM; AND/OR

REPACK VALVE

ACTUATOR IS OK.RESTORE SYSTEM

TO SERVICE.

Fig. 4. Troubleshooting Flowchart for MP953C, D (without Gradutrol Relay/Positioner).

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REPAIRTable 4. Loosening and Removing Actuator Bases from

Valve Bonnets.GENERAL

Device ActuatorSeries Dia (In.)Model Tools Required

This section lists tools needed to disassemble andreassemble Actuators and gives procedures for replacingparts of actuators. See PARTS AND ACCESSORIES forparts diagrams and lists.

MP953AMP953cMP953E

3/16-in hex allen wrench (bit)or T-25 Torx bitNOTE Series number does not

NOTE: Used only

1989 or later date

actuators regardless of date

umber does not

Table 5. Miscellaneous Tasks.

EQUIPMENT NEEDED Mp953cMP953E

Tables 2 through 5 list basic repair tasks and the toolsrequired for each.

MP953AMP953cMP953E

Table 2. Removing and Replacing Actuator Covers.

Model‘~MP953AMF953ch4P953E

MP953BMIY53DMP953F

Au 5 1/4-h hex socket

8 - 3/8-in hex socket- Two l/4-20 x 3 in. hex-head

bolts, threaded to withinl/%-in. of bolt head

13 - 3/8-in. hex socket-Four 5/16-18 x 3 in. hex-head

bolts, threaded to withinl/2-+1. of bolt head

All 7 5/16-in. hex socket

MP953B

MP953DMP953F

Task Tools Required

Removing MP953AGradutrol Relay positioner

Crescent wrench with jawopening to at least 2-5/8 in. (67mm). Narrow-jaw pipe wrench orlarge adjustable pliers may besubstituted as long as they do notdistort the setpoint knob.

Removing MP953E positivepositioner

Adjustable crescent wrench withjaw opening to at least 2-5/8 in.(67 mm).

Table 3. Removing and Replacing Actuator Bases. 5/16-in. hex socketRemoving hJP953BGradutrol Relay positionerbracket assembly

Removing MP953F positivepositioner bracket assembly

De vice ActuatorModel Series Dia (In.)

MP953A 2 5

MP953c 2MP953E 1

Tools Required

5/16-in. hex socket

5/16-in. hex socket or T-25Torx bitNOTE: Series number does not

indicate type offastener.

Removing and replacingMP953B, D, F sleevediaphragm

- Small-blade screwdriver-3/16-m hex socket- l-3/8-in. adjustable hex socket

(crescent wrench is acceptablesubstitute)

9/16-m., six-point, deep socket(3/8-in. drive preferable)3/8-in. hex allen wrench (bit)3/16-m. hex allen wrench (bit)

3/16-in. hex allen wrench (bit)or T-25 Torx bitNOTE: Series number does not

indicate type offastener.

Pliobond glue or equivalentReplacing feedback-springcup on MP953A, E maindiaphragmUnlatching actuator fromvalve stem button

Medium- to large-bladescrewdriver

MP953F 1 Lubricating MP953AGradutrol Relay positionerO-ring

Lubricant or silicone greaseobtained locally

Lubricating MP953Epositive positioner O-ring

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GRA DUTRO ‘ELAY ASSEMBLIES

313695 J

31371 I(MP953B) ’A

SPRING -@

/--_315178 CUP

6-32 X l/4 ROUND H

SCREW 0-80X 5/16 ROUND HD

NUT OS0 X .05 IN. THICK

PARTS BELOW COMMON TO AU RELAYS PARTS BELOW COMMON TO ALL RELAYS

VALVE UNIT

CUP ASSY

START POlNTSPRING

A1THE 313711A AND D MODELS HAVE

DUAL BARBED CONNECTORS; THE3137118 AND C MODELS USE PlPt=. . -THREAD CONNECTION. THE 313711AAND 8 MODELS HAVE DUAL SCALE,ENGLISH AND METRIC; THE 313711CAND D MODELS HAVE ENGLISH

5!32c-2

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Fig. 5. Gradutrol Relay Assemblies Exploded View.

8

MO953 CONVERSION

JO CONVFRT A4 DFVICF-8 IN. (203 MM)RELAY ASSY 313695JFEEDBACK SPRING

3 13696-00063CUP 315178-00062DIAPHRAGM 311750 OR314153

72 - S C R E W

Q-WASHER

@- PLATE

TO CONVFRT A8 DWICF-13 IN. (330 MM)RELAY ASSY 313695JFEEDBACK SPRING

313814-00605CUP 315178-00062DIAPHRAGM 312505CUP 315020-00124

CUP 31174O-OO602

- D I A P H R A G M

Fig. 6. MO953 Conversion.

YOKE ASSEMBLY

SPRING314652

YOKE314651 (314651A)316059 (316059A) 314653

ASSEMBLY 316059A-FOR SUPPORT WITHHELICOIL INSERTASSEMBLY 314651A-FOR SUPPORT WITHNYLON INSERT 14732-l

Fig. 7. Yoke Assembly.

REPLACE MAIN DIAPHRAGM

GENERAL

Before replacing the diaphragm, determine the type andmaterial of the existing diaphragm according to its color:

- Black: NeopreneMaximum temperature 160F (71C)Used on MP953A, 6, and E

- Black with white spot: Ethylene Propylene (EPR)Maximum temperature 250F (121C)Used on MP953B, D and F

- White: SiliconeMaximum temperature 250F (12 1C)Used on MP953A and C and may be installed on

MP953E

Flat diaphragms and beaded-roll diaphragms are notinterchangeable. Neoprene and EPR diaphragms areinterchangeable but must meet maximum temperaturerequirements.

MP953A, C, E DIRECT-ACTING ACTUATORS

Direct-acting Actuators are subject to extremely highinternal spring loads. Therefore, Actuator covers must beremoved very carefully before the the main diaphragm canbe replaced.

When using the following procedures, see Figures 8 and10 for exploded diagrams and Tables 6 and 8 for parts.

REMOVE ACTUATOR COVER

A WARNING AUse extreme caution when disassembling Actuators.Actuator assemblies are under spring load which can reach

1.

2.

3.4.

5.

6.

Disconnect all air lines, including any connected toGradutrol Relay or positive positioner, if present.MP953A and E only: Remove Relay/positioner fromActuator cover by turning counterclockwise.Remove exposed feedback spring.See WARNING in this section. Loosen coversetscrews sequentially l-1/2 turns each.Check whether cover can be squeezed back to frameby hand. If so, continue sequentially loosening screwsuntil cover is free. Remove cover, diaphragm, and goto REPLACE DIAPHRAGM.If cover cannot be squeezed back to frame, use thefollowing guides according to Actuator size.NOTES:

a. Bolts should be threaded to withinapproximately l/2 in. of their heads.

b. In each case, turn the long bolt in until its headcontacts the cover flange.- 8-m Actuator: Remove two cover screws

that are directly opposite each other. Replacecover screws with l/4-20 x 3 in. bolts.

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- 13-in. Actuator: Sequentially remove andreplace every second cover screw with a 5/16-18 x 3 in. bolt.

7. Continue sequentially loosening all bolts/screws untilall original (short) bolts/screws are disengaged.

8, Continue to loosen remaining long bolts alternatelyuntil no more spring load exists. Remove bolts, cover,and diaphragm.

5.6.

7.

8.

9.10.

REPLACE DIAPHRAGM

Reinstall small sleeve cup, ring, and screws.Install new main diaphragm, checking that it isproperly located.Reinstall cup, lockwasher, and nut. Tighten nutenough to seal diaphragm against cup.Reinstall feedback spring. Check that spring issecurely seated in grooves on lever and cup support.Reinstall cover and cover screws.Reinstall air lines and restore system to service,

1.

2.

3‘

4.

5,

Fit new diaphragm over Actuator cup. Position coverover diaphragm,Reinstall Actuator cover following procedure inREMOVE ACTUATOR COVER in reverse order.NOTE: In some cases, cup and diaphragm will be

forced above top of frame. As cover istightened, check that diaphragm bead isproperly positioned in its retention groove.

MP953A and E only: Cement positioner feedbackspring cup to new diaphragm. Cup must be centeredin hole of Actuator cover.Reassemble feedback spring and Relay/positioner.Make certain that each end of spring is located in aspring cup (one end on diaphragm and the other endin Relay/positioner) before screwing Relay/positioner back into position.Reinstall air lines and restore system to service.

MP953B, D, F REVERSE-ACTING ACTUATORS

Reverse-acting Actuators are not subject to high internalspring loads. Therefore, the Actuator cover can be removedroutinely.

Replace diaphragm and sleeve (inner seal) together. UseSERVICELINE Kit 14003 124-002 for all Actuators. Partsare rated at 250F (121C).

When using the following procedure, see Figures 9 and11 for exploded diagrams and Tables 7 and 9 for parts.

Disconnect all air lines, including any connected toGradutrol Relay or positive positioner, if present.Remove cover screws, cover (on MP953B and F,Relay/positioner remains attached to cover),feedback spring (MP953B, F), large nut,lockwasher, cup, and diaphragm.Remove small sleeve cup, screws, ring, and sleevediaphragm.Install new sleeve diaphragm, checking for properseating in its locating groove.

REPLACE ACTUATOR BASE

MP953A, C, E DIRECT-ACTING ACTUATORS

When using the following procedure, see Figures 8 and10 for exploded diagrams and Tables 6 and 8 for parts.

A WARNING AUse extreme caution when disassembling Actuators.Actuator assemblies are under spring load which can reach550 pounds.

1.

2.

3.45.

6.

To eliminate internal forces in Actuator assembly andremove Actuator cover, refer to REMOVEACTUATOR COVER under MP953A, C, EDIRECT-ACTING ACTUATORS in REPLACEMAIN DIAPHRAGM section.Remove Actuator cup, spring, retainer, plate,mainspring, and ring (5-in. models only).Remove fasteners securing base to frame.Install new base assembly and reinstall fasteners.Reassemble Actuator assembly by followingprocedure in Steps 1 and 2 in reverse order.Reinstall air lines and restore system to service.

MP953B, D, F REVERSE-ACTING ACTUATORS

When using the following procedure, see Figures 9 and11 for exploded diagrams and Tables 7 and 9 for parts.

AWARNING ATo safely disassemble and reassemble reverse-actingActuators with 8 psi start point, a mechanical advantage isrequired due to the high compression of the main spring(200 pounds). For safety, use a large bench vise or C-clampand two blocks of wood.

1. To release support assembly from Actuator cup, referto Steps 1 through 3 in MP953B, D, F REVERSE-ACTING ACTUATORS under REPLACE MAINDIAPHRAGM.

75-5500 10

2.

3.4.5.6.

7.

See WARNING in this section. Sequentially loosenfasteners securing base to frame. Base pops up fromframe when fasteners disengage.When tension is relieved, remove fasteners and base.Install new base assembly.Reinstall fasteners.

NOTE: Considerable force may be required beforethe positioner begins to turn because of thelarge O-ring that seals the Relay/positionerto the Actuator cover.

3. Remove feedback spring. Retain old spring forMP953A.

Reassemble Actuator assembly by following 4. Install original feedback spring in diaphragm cupprocedure in Steps 1 and 2 in reverse order. when Relay/positioner is being replaced with anReinstall air lines and restore system to service. identical device.

REPLACE ACTUATOR MAINSPRING

MP953A, C, E DIRECT-ACTING ACTUATORS

Remove the main spring on direct-acting Actuators safelyby following the procedure in REMOVE ACTUATORCOVER under MP953A, C, E DIRECT-ACTINGACTUATORS in REPLACE MAIN DIAPHRAGMsection. This procedure relieves all internal spring force andmakes the spring fully accessible.

See PARTS for the proper replacement spring.

MP953B, D, F REVERSE-ACTING ACTUATORS

Remove the main spring on reverse-acting Actuatorssafely by following the procedure in MP953B, D, FDIRECT-ACTING ACTUATORS in REPLACE MAINDIAPHRAGM section. This procedure relieves all internalspring force and makes the spring fully accessible.

See PARTS for the proper replacement spring.

REPLACE GRADUTROL RELAY/POSITIVE POSITIONER

MP953A, E DIRECT-ACTING ACTUATORS

When using the following procedure, see Figure 8 for anexploded diagram and Table 6 for parts.

To prevent damage to the MP953E, wrench force must only

1.2.

Disconnect all air lines.Unscrew Relay/positioner counterclockwise fromActuator cover and remove.

.l

5. When replacing Gradutrol Relay with a new-stylepositive positioner, discard original spring and installfeedback spring with proper range from appropriateretrofit kit. For part number, see POSITIONERRETROFIT AND SPRING KITS in PARTS ANDACCESSORIES.

6. Position new O-ring in groove of Relay/positionerbase and install new Relay/positioner in Actuatorcover.NOTE: Compress feedback spring as the Relay/

positioner is screwed in place. Check thatboth ends of the feedback spring are locatedin the spring cups, one in the Relay/positioner and one cemented to the Actuatordiaphragm.

7. Tighten Relay/positioner only enough to seat large O-

of position and damage Actuator diaphragm andfeedback spring when unit is destroked.

8. Reinstall air lines and restore system to service.9. Adjust range (MP953A only) and/or start point. See

MAINTENANCE.

MP953B, F REVERSE-ACTING ACTUATORS

When using the following procedure, see Figure 9 for anexploded diagram and Table 7 for parts

Disconnect all air lines, including short tube fromRelay/positioner to side of Actuator cover.Remove three screws that locate the Relay/positionerbracket assembly on the Actuator cover.Remove bracket assembly. Retain original bias andfeedback springs when Relay/positioner is beingreplaced with an identical device,When replacing Gradutrol Relay assembly with new-style positive positioner assembly, discard originalbias and feedback springs and install springs withproper range from appropriate retrofit kit. For partnumber, see POSITIONER RETROFIT ANDSPRING KITS in PARTS AND ACCESSORIES.

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Check that ends of bias and feedback springs areproperly located. Install new Relay/positionerbracket assembly on Actuator cover.Replace short tube from Relay/positioner branch portto fitting on side of Actuator cover.Reinstall remaining air lines and return system toservice.Adjust range (MP953B only) and/or start point. SeeMAINTENANCE.

REPLACE GRADUTROL RELAY/POSITIVE POSITIONERFEEDBACK SPRING

See appropriate part of REPLACE GRADUTROLRELAY/POSITIVE POSITIONER for correct feedbackspring replacement procedures.

REPLACE GRADUTROL RELAY/POSITIVE POSITIONER FILTER

MP953A, B WITH GRADUTROL RELAY

When using the following procedure, see Figures 5, 8,and 9 for exploded diagrams and Tables 6 and 7 for parts.

1.2.3.

4.

5.

Remove tubing.Remove Gradutrol Relay air fittings.Remove filters from Relay ports with pointed toolsuch as an awl.Install foam filters, taking care not to fold filters orbunch them together.Reinstall fittings and tubing. Restore system toservice.

MP953E, F WITH POSITIVE POSITIONER

When using the following procedure, see Figures 8 and 9for exploded diagrams and Tables 6 and 7 for parts.

Remove tubing.To remove positioner from Actuator cover, followappropriate procedures under REPLACEGRADUTROL RELAY/POSITIVE POSITIONER.Remove service plate (Fig. 12 through 14) frompositioner.Replace filter assembly with Filter Assembly14001865-001.

5. Replace service plate and reinstall positioner.6. Reconnect tubing and restore system to service.

INSTALL STEM ANTISPINFEATURE

GENERAL

A valve stem

(MP953A, C, E)

will not spin when it is locked to theActuator. The antispin feature is built into 13-inchMP953A, C, and E and can be added to the 5- and 8inchMP953A, C, and E. Adding the antispin feature involvesmodifying the latching mechanism in the Actuator thenreplacing the stem button on top of the valve.

‘when using the following procedures, see Figures 8 and10 for exploded diagrams and Tables 6 and 8 for parts.

MODIFY ACTUATOR

1.2.

3.4.

5.

6.7.

Disconnect air lines.Loosen two Actuator base/valvebonnet setscrews andrelease stem button latch located on underside ofActuator cup.Remove Actuator from valve.On Relay/positioner equipped Actuators (MP953Aand E), refer to appropriate procedures underREPLACE GRADUTROL RELAY/POSITIVEPOSITIONER. Remove feedback spring.Remove Actuator cover, diaphragm, cup, spring,retainer, and plate. Refer to appropriate proceduresunder REPLACE MAIN DIAPHRAGM fordisassembly.Replace plate with Antispin Plate 3 11975A.Reassemble retainer, spring, cup, diaphragm, cover,and positioner.

REPLACE VALVE STEM BUTTON

Use the following procedure to replace the stem button onlf2- to 3-inch V5011 Valves and l/2- to 2-inch V5013AValves. The procedure requires Stem Button 3 12495.

Remove existing stem button.Replace old button with new button, checking that thenew button is installed at the same height as the oldbutton.Reinstall Actuator on valve.Reconnect air lines and restore system to service,

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PARTSANDACCESSORIES

PARTS

Figures 8 through 11 show exploded diagrams ofM0953A-D and MP953A-F Actuators. Tables 6 through11 list parts shown in the figures.

24076

Fig. 8. MO/MP953A and MP953E Exploded View. Fig. 9. MO/MP953B and MP953F Exploded View.

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Table 6. MOLMP953A and MP953E Parts.

313814~OGO65 Feedback spring for l-l/2-in. stroke MP953A (see NOTE 2)313696-00063 Feedback spring for 3/4-in. stroke MP953A (see NOTE 2)

t 14004698-0011 312099

21 1 14004298-00514003034-26114003034-264

Frame for g-in. models, includes screwsFrame for 13-in. modelsBase for 5-in. models, includes screwsBase for g-in. modelsBase for 13-in. models, 3/4-in. strokeBase for 13-in. models, l-l/2-in. strokeReplace with l/4-20 x 5/8 in. can-head machine screw (2) for 5-in. modelsReplace with 5/16-18 x I- l/4 in. cap-head machine screw (2) for g-in. modelsReplace with 5/16-18 x l-314 in. cap-head machine screw (2) for 13-in. models, 3/4-in. strokeRentace with 3/8-16 x I-112 in. can-head machine screw (2) for 13-in. models. I-l/2-in. stroke

Base screw (2), l/4-20 x 314 in. for 5-m. modelsBasescrew (2), l/2-13 x i-1/2 in. for g-in. modelsBasescrew (2), ID-13 x 2 in. for 13-in. models

NOTES:I. For metric conversion: Model sizes- 5 in. (127 mm)8 Stroke- l/2 in. ( 13

in. (203 mm) 13 mm)3/4 in. (19in. (330 mm) mm)l-l/2 in. (38

2. For MP953E feedback spring, see Table 13.

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Table 7. MO/MP953B and MP953F Parts.

Kev 1 INO:

1

2

Part Number Description

- Gradutrol Relay assembly for MP953B, use 14004138-001 Positive Positioning Retrofit Kit.

Obtain locally Hex-head screw (2), lo-24 x 506 in.

3 16579 Filters (3)

Obtain locally Tubing connector, l/8 NPT, for MP953B

14004080-00 1 Positive positioner and bracket assembly for MP953F, includes filter 14001865-001

Obtain locally Copper or plastic tubing, l/4 in.

314420-01508 Bias spring for Gradutrol Relay

140040 15-00 1 Bias spring for positive positionerI I I Y L L

8 Obtain locally Hex-head screw (6), 10-24 x 3/4 in.

9 14004665-00 1 Cover (casting stamped 14004660-001)

10- 313918-00064 Feedback spring for l/2-in. stroke MP953B (see NOTE 1)

313919-00063 Feedback spring for all other MP953Bs (see NOTE 1)

11 3 12205

12 304733

. v

Nut

Lockwasher

13 312199 CUP14 1400204@002 Diaphragm for all temperature ranges (see NOTE 2)

1 314524 1 Washer for 3/4-in. stroke models

NOTES:1. For MP953F feedback spring, see Table 13.2. Diaphragm and Sleeve (Seal) available in Kit 14003 124-002.

15 75-5500

24078

Fig. 10. MOjMP953C Exploded View.

Y 24079

Fig. 11. MO/MP9531> Exploded View_

75-5500 PUC 9-90 16

Table 8. MO/MP953C Parts.

KeyNo.

1

Part Number Description

312817 Cover for 5-in. Series 2 model

311748 Cover for 8-in. model

312103 Cover for 13-m. model

2 Obtain locally Fillister-head screw, 6-32 x l/2 in. for early models (8)

Obtain locally Fillister-head screw, 8-32 x l/2 in. for 5-in. model (4)

Obtain locally Filhster-head screw, l/4-20 x 3/4 in. for 8-in. model (6)

Obtain locally Fillister-head screw, 5/l 6-18 x 7/8 in. for 13-in. model (4)

3 310673 Main diaphragm for old 5-in. models Al, A5, A9; 160F (71C), neoprene black

312760 Main diaphragm for 5-in. models neoprene black

3 10668 Main diaphragm for old 5-in. models A2 and A6; 250F (121C), silicone white

3 13745 Main diaphragm for 5-in. models, (121C), silicone white

7

3 14683-00062 Retainer for 13-in. model

310501-00021 Plate for 5- and S-in. models, 3/4-in. stroke

31197514 Plate for 8-in. model, l-l/2-in. stroke, with antispin

3 14646-00062 Plate for 13-in. model89

10

See Table 10 Mainspring3 10665-00062 Ring for 5-in. model

14004613-001 Frame for 5-in. model, includes screws

14004611-001 Frame for 8-in. model, includes screws

11

312101 Frame for 13-in. model

14004577-001 Base for 5-in. model, includes screws

311744 Base for 8-in. model14004698-001 1 Base for 13-in. model, 3/4-in. stroke

312099 Base for 13-in. model, l-l/2-in. stroke

12 Obtain locally Replace with l/4-20 x 5/8 in. cap-head machine screw (2) for 5-in. model

Obtain locally Replace with 5/l 6-l 8 x l-1/4 in. cap-head machine screw (2) for 8-in. model

Obtain locally Replace with 5/16-18 x l-3/4 in. cap-head machine screw (2) for 13-in. model, 3/4-in. stroke

Obtain locally Replace with 3/8-16 x l-1/2 in. cap-head machine screw (2) for 13-in. model, I-l/2-in. stroke

13 14004298-003 Base screw (2), l/4-20 x 3/4 in. for 5-in. model

14004383-562 Base screw (2), l/2-13 x l-1/2 in. for 8-in. model

30462 I-00605 Base screw (2), l/2-13 x 2 in. for 13-in. model

NOTE: For metric conversion: Model sizes- 5 in. (127 mm)8 in. (203 mm)13 in. (330 mm)

Stroke-112 in. (13 mm)314 in. (19 mm)l-1/2 in. (38 mm)

17 75-5500

Table 9. MO/MP953D Parts.

2 Obtain locally Hex-head screw with lockwasher (6), lo-24 x 3/4 in.

3 I 1 4 0 0 4 6 6 0 - 0 0 1 I Cover

4 3 1220.5 Nut

5 304733-00021 Lockwasher

6 1 312199 I CUD

1 314524 I Washer for 3/4-in. stroke model

15 I 3 12200-00767 I CUD

16 3 14650A Support Assembly with helicoil insert for Series 2 models only. Convert MOIMP953D

Series 1 to Series 2 with this Support Assemblv and 3 16059A Yoke Assemblv.

17 I 1 4 0 0 4 5 7 8 - 0 0 1 I Base. includes set screw

18

19

3 1605914 Yoke Assembly for Support Assembly with helicoil insert (see detail in Fig. 7)

3 1465 1A Yoke Assembly for Support Assembly with nylon insert (see detail in Fig. 7)

14004298-003 Socket-cap base screw (2). l/4-20 x l-3/4 in.

2 0 1 Ob ta in loca l ly 1 Replace with l/4-20 x 5/8 in. cap-head machine screw

NOTE 1. Diaphragm and Sleeve (Seal) available in Kit 14003124-002.

Table 10. MP953C Mainsprings.BActuator StrokeD i a m e t e r I n . Pressure RangeIn. b-m m-4 Color psi &Pa) - Part Number

5 l/2 (13) Brown 2-7 (14-48) -

(127) Gray 8-12 (55-83) -

*Used on MP953A and E models.

75-5500 8

Table 11. MP953D Mainsprings.

3/4 (19) 1 White 1 4-11 (28-76) 1 314313-00123

1 Black I 8-13 ( 5 5 - 9 0 ) I 312203-00017*I Silver I 3-7 (21-48) I 314963-0060~

* Used on MP953B and F models. Tbl II

POSITIONER RETROFIT ANDSPRING KITS

Table 12. MP953 Positive Positioner Retrofit Kits.

Part No. 1 Description*14004138-001 For RA valve actuators (Fig 12)14004139-001 For 8- and 13-in. (203- and 330-mm),

1 3/4-in. (19-mm) stroke valveactuators (Fig. 13)

14004140-001 For 8- and 13-in. (203- and 330-mm),1 l-1/2 in. (38-mm) stroke valve

actuators (Fig. 14)14004214-001 For 5-in. (127-mm), 3/4-in. (19-mm)

stroke valve actuators (Fig. 13).

I (Positioner has cream-colored lowerplate.)

Table 13. MP953 Feedback Spring Kits.

Part No. Description*1400421 l-001 For 3/4-in. (19-mm) stroke DA vahs14004212-001~ For l-l/&in. (38-mm) stroke DA

14004213-001I

* All kits include springs with 3-, 5, and lo-psi (21-,

For RA valve actuators (includes bias

34-, and 69-kPa) range.

spfiw~

* Includes corresponding feedback spring kit listed inTable 13.

Fig. 12. Positive Positioner Retrofit Kit 14004138-001.

19 PUC 9-90 75-5500

D-RING312602

BLUE10 PSI (69 KPA)

YELLOW5 PSI (34 KPA)

BLACK3 PSI (21 KPA)

FEEDBACK SPRING K

. 14004211-001

O-RING312602

GREEN10 PSI (69 KPA)

GRAY5 PSI (34 KPA)

RED3 PSI (21 KPA)

FEEDBACK SPRING KIT14004212-001_

R2719-1

Fig. 13. Positive Positioner Retrofit Kits 14004139-001and 14004214-001 (3/4 in. stroke):).

R27151

Fig. 14. Positive Positioner Retrofit Kit 14QO4 140-001(l-1/2 in. stroke).

75-5500 20

Ei

1 3

0

ACTUATOR STEM EXTENSION311851-00062 - 8 IN. MODEL

POSITION INDICATOR FOR.5IN. (127 MM) DIA-316028A7-IN (178 MM) DIA-316035A8-IN (203 MM) DIA-316037A

314 IN. STROKE ADAPTER14001162-001, -002. -003, -004ADAPTS MP953C TO V053,VO55 OR V056 FOR COMPLETE CROSS-REFERENCE iNFORMATION ON VALVES,

13-IN (330 MM) DIA, 314 IN (19 MM) STROKE-1400d722-001 SEE 95-557913-IN (330 MM) DIA, l-112 IN (38 MM) STROKE-316036A

12

EXTENSION Cb

Q

- SETSCREW

312518-00062 l/4-28 X 114 IN.

31BUTTON

.0503-00062

ACTUATOR STEM AND SETSCREW13 IN. MODEL. l-1/2 IN. STROKE I I

CORRCSION RESISTANT SPRAYMSC 3858 Fig. 15. MP953 Accessories. 8825.2

21 7545500

HoneywellHome and Building Control Home and Building ControlHoneywell Inc. Honeywell Limited-Honeywell Limit&zHoneywell Plaza 740 Ellesmere RoadP.O. Box 524 Scarborough, OntarioMinneapolis, MN 55408-0524 MlP 2V9

Helping You Control Your World

75-5.500 7-89