Honeywell MO953A-D and MP953A-F Pneumatic Valve Actuators TABLE OF CONTENTS GENERAL .. Description Application Specifications Operation... i MAINTENANCE. Equipment Needed Visual Inspection Cleaning... Operational Che] Adjustments... Check Adjustment on MP953A, B, Set Operating Range IMPISH, B. MPY53E, F. Adjust Start Loin MPYS3A,B. COMPOSE, www BRS TROUBLESHOOTING Equipment Needed .. Symptoms and Corrective Action mn Retrograde Relay Assembly MO§53 Conversion Yoke Assembly .. Replace Main Diaphragm General.
OPERATION In a direct-acting (n.o. valve) system, an increase in control (branch/pilot) air pressure forces the Actuator diaphragm and cup assembly downward, forcing the valve stem down to proportionally close off the flow through the valve (Fig. 1). In a reverse-acting (n.c. valve) system, an increase in control (branch/pilot) air pressure forces the Actuator diaphragm and cup assembly upwards, forcing the valve stem up to proportionally increase the flow throng the valve.
SET OPERATING RANGE CAMPOS, B 1. Use Wrench 3015724 to loosen the cover locking screw (Fig. 2). 2. Unscrew the start point adjustment knob lung thread is disengaged. Remove knob. a. For3psi(21kPa) range, back all range adjustment screws Off to friction stop. b. For5psi(34kPa) range, back only the black range. adjustment screws fo stop and tighten the outer, cadmium-plated range adjustment screws. c. For 10 psi (69 kPa) range, tighten all range adjustment screws.
TROUBLESHOOTING EQUIPMENT NEEDED SYMPTOMS AND CORRECTIVE Troubleshooting procedures require Pressure Gage ACTION 14003519 (0 to 30 psi [0 to 207 kappa. Figures 3 and 4 show troubleshooting flowcharts. Bea) ¥ CHECK THAT ACTUATOR 18 SECURELY MO LINTED AND STEM BUTTON IS MESSIAHS, E ONLY. INSTALL ANTIS FIN PLATE AND STEM BUTTON MAIN LING PRESSURE TO POSITIONED 00Es MAIN UNE PRESSURE EQUIVALENT STADIUM MAIN Line | PRESSURE T0 PROPER VALUE 1429534.
CHECK THAT ACTUATOR 15 SECURELY MOUNT AND STEM BUTTON 13. PROPERLY LATCHED ADEQUATE FOR COMPLETE OPERATING Sp] INSTALL ANTISEPSIS COMPOSITE ONLY: PLATE AND STEM BUTTON DIAPHRAGM ANDORRAN REPLACE ACTUATOR DIAPHRAGM ANDIRON Sieve SLEEVE RANGE LEAK py REMOVE ACTUATOR A ean 8 AND CHECK FOR MALFUNCTION ING BINDING VALVE STEM CONTROL DEVICES ves ACTUATOR 5 OK. 1" RESTORE SYSTEM TO SERVILE. No, MCVEIGH ANY FOREIGN MATERIAL: RANCOR REPAIR DISC, SEAT, AND STEM: REPACK VALVE RECONNECT of ACTUATOR cane Fig. 4.
REPAIR GENERAL This section lists tools needed to disassemble and reassemble Actuators and gives procedures for replacing parts of actuators. See PARTS AND ACCESSORIES for pats diagrams and lists. EQUIPMENT NEEDED Tables 2 through S$ list basic repair tasks and the tools required for each. Table 2. Removing and Replacing Actuator Covers, Device Actuator Model | Series | Dia (In) Tools Required Campos | An 5 |1/4in. hex socket MP9S3C 8 |— 3/8.
GRADUATION RELAY ASSEMBLIES SPRING = i vise —y J 2. THICK s Crew (LSE ase, Br 1 0-50 X 516 FOUND NUT 080 X 95 IN. THICK DS Ee extrasensory od ee SLEEVE i CASKET oan ° —. ony j aver PLATE Loren SETS 34579 FILTER 316579 FILTER 2} = PARTS BELOW COMMON TU ALL RELAYS gasket" ey ROLL err VALVE UNIT Na A rising aso ones DUAL BARBED CONNECTORS, THE 3137118 AND C MODELS USE PIPE. THREAD CONNECTION. THE 3137114 AND & MODELS HAVE DUAL SCALE, ENGLISH AND METRIC; THE 3137116 AND OD MODELS HAVE ENGLISH SCALE.
M0953 CONVERSION REW WASHER Sir CUP 11740-00502 ~— DIAPHRAGM mm CUP Po ee PIN wz Fig. 6. M0953 Conversion. YOKE ASSEMBLY SN SPRING « Ses BEARING 314653 31 6038A—FOR SUPPORT WITH INSERT 54 AF OR SUPPORT WITH 17324 Fig. 7. Yoke Assembly.
13-in, Actuator: Sequentially remove and replace every second cover screw with a 5/ 16-18 x 3 in. bolt. 7. Continue sequentially loosening all bolts/screws until all original (short) bolts/screws are disengaged. 8. Continue to loosen remaining long bolts alternately until no more spring load exists. Remove bolts, cover, and diaphragm, REPLACE DIAPHRAGM 1. Fit new diaphragm over Actuator cup. Position cover over diaphragm. 2.
2. See WARNING in this section. Sequentially loosen fasteners securing base to frame. Base pops up from frame when fasteners disengage, . When tension is relieved, remove Fasteners and beige. . Install new base assembly. . Reinstall fasteners. . Reassemble Actuator assembly by following procedure in Steps 1 and 2 in reverse order. 7. Reinstall air Junes and restore system 10 service.
5. Check that ends of bias and feedback springs are properly located. Install mew Prepositional bracket assembly on Actuator cover, 6. Replace short tube from Prepositional branch port to fining on side of Actuator cover. 7. Reinstall remaining air lines and return system to service. 8. Adjust range (MP953B only) and/or start point. See MAINTENANCE.
PARTS AND ACCESSORIES PARTS Figures 8 through 11 show exploded diagrams of MO953A-D and MP9S3A-F Actuators. Tables 6 through 11 Hist parts shown in the figures, | sar ~ 24078 Fig. 8. MO/MPY33A and MP953E Exploded View. Fig. 9. MO/MP953B and CAMPOS Exploded View.
Table 6. MO/MPIS3A and IMPOSE Parts, Key No. Part Number Description i Obtain locally Plug, 3 NPT, §_ and 13.in, models oily 2 | Obtain locally ‘Tee, 18 NPT. §and 13-in. models only 3 Retrofit Kit 14604139, Universal Relay Assembly from 14004140, or 14004214 4 316579 Filter 2) Ss 14004135-001 Positive positive for MAISIE, includes filter 1450 1865-001 © 31360: O-ring 7 | Obtain locally Filibusterer sew, 6-32 X 172 in. fot 5-in. MO953A Insisting locally Filibuster-bead screw, 8-32 x 1/2 in. for 5-in.
Table 7. MO/MPO53B and MP953F Parts. Key No. Part Number Description 1 — Graduation Relay assembly for MP9S30, use 14004138-001 Facsimile Positioning Retrofit Tot. 2 Ob lain locally | Hex bead screw (3), 10-24 x 5716 in, 3 316579 Filters (3) 4 Obtain locally | Tubing connector, 1/8 NPT, for MP933B 5 14604080-001 | Positive positioned and bracket asexually for MPSS3E, loincloths filter 14001365007 6 Acrobatically | Copper or plastic bung, 174 in.
Table 8. ISOMORPHIC Parts. Key No. Part Number Description 1 312817 Cover for 5-in. Series 2 model 311748 Cover for B-in, model 312103 Cover for 13m. model 2 Obtain locally | Filler head screw, 6-32 x 172 in. for Carly models (8) Obtain locally | Filibuster-head screw, 8-32 x 1/72 in. for 5-in. mode] (4 Obtain locally | Filibuster-head screw, 174-20 X 3/4 in. for 8-in. mode] (6) Chitin locally | Filibuster-head screw, x 7/8 in. for 13-0. model (4) 3 310673 Main diaphragm: for old 5-in.
Table 9. MOMPYS3D Paris. Key No. Part Numbers Description t 313541-0060 Button 2 Obtain locally Hex-head screw with lack washer (6), 10-24 14004660-001 Cover 4 312205 Not 5 304733-00021 Lock washer 6 312199 Cup 7 14002040-002 | Diaphragm for al temperature canes (see NOTE 1) 8 312201 Cup 9 Obtain locally Round-head screw 3), 4-40 312180 Ring 1 4002039-001 | Sleeve, 200F (93C), ethylene polypropylene, black wills white dot (see NOTE 1 12 14004612-001 Frame 13 See Table 11 Mainspring 4 312794.
POSITIONED RETROFIT AND SPRING KITS Table 12. MP953 Positive Positioned Retrofit Kits. Table 13. MP953 Feedback Spring Kits. Part No. Description™ Part No. Description® 14004138-001 For RA valve actuators {Fig 12) 14004211-001 For (19-mm) stroke DA valves 14004129-001 14004140-001 14004214001 * Includes corresponding feedback sp Table 13. WH) vd APSE (21 KPA) For &and 13-in. and 330-mm), {19-mm) stroke valve ALICIA! 13 For and 13-in. (203and 330-mm), 1-1/2 in. (38-mum) stroke valve actuators (Fig.
POSITIONED BLUE 10 951 {69 KPA) YELLOW SERVICE PLATE Pst (34 Key GRAM COLORED LOWER PLATE ON V BLACK PSI {20 KPA) FEEDBACK SPRING 3400421 1001 14004214-001 AN A WW KIT ura Fig. 13. Positive Positioned Retrofit Kits 14004139-001 75-5500 and 14004214-001 (3/4 in. stroke). POSITIONED SERVICE PLATE RING 12502 na Fig. 14. Positive Positioned Retrofit Kit 14004140-001 {1-1/2 in. stroke).
ACTUATOR STEM EXTENT: F1LBEL00062 8 IN. MON! 2-1/2 1h 63 Muy VALVE BONNET EXTENSION KIT 1.001 POSITION SIN {127 Yk DIA 150208 FIN, {178 Ne OMA — 315 SIN £203 MING DIANE 13H. {250 Mk DIZ, 34 CORROSION RES: HSC 3358 IN 11% 3M STROKE: TAN, 1330 Wie DIA 177 IN. 33 MM STROKE —16 expense setscrew Son 2 1.28 X15 FOR valves WITH 1/2 IN. TRAVEL BUTTON 310503. 31251700605 FOR VALVES WITH 3/4 IN TRAVEL 0 me SETSCREW | ©I2X E18 | ACTUATOR STEM ANG SETSCREW MODEL, 1-4/2 IN. STROKE \ ADAPTER 31261500062 SETSCREW — 1428 U
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