75-5500 - MO953A-D and MP953A

75-5500 - MO953A-D and MP953A
GENERAL
DESCRIPTION
proportionally control steam or hot and cold liquids in
HVAC systems.
The MO953 and MP953 Pneumatic Valve Actuators
(“Actuators”) are used with V5011 and V5013 Valves and
can control older steam and water valves via adapters. The
M0953A-D Actuators are functionally identical to the
MP953A-D Actuators. Therefore, most of this sheet is
directed to the MP953 Actuators.
SPECIFICATIONS
MP953A and B Actuators use a Gradutrol Relay for
positioning, and the MP953E and MP953F Actuators use a
positive positioner. The relay and the positioner function in
essentially the same way. Positivepositionerretrofitkitsare
available for MP953A and B Actuators (see
ACCESSORIES).
MODELS:
MP953A-Direct-acting with Gradutrol Relay
MP953B-Reverse-acting with Gradutrol Relay
MP953C-Direct-acting without positioner
MP953D-Reverse-acting without positioner
MP953E-Direct-acting with positive positioner
MP953F-Reverse-acting with positive positioner
APPLICATION
MAXIMUM SAFE AIR PRESSURE
25 psi (172 kPa)
See Table 1 for additional specifications.
These Actuators operate the V5011 and V5013 Valves
and certain other coil, line, and zone valves that
Table 1. MO953/MP953 Specifications.
MP953
Device Type
Active
Inactive
I
MO953
acting -
A1087 A1004 A1210
-
Al
with Gradutrol -
Al095 A1012 Al228
-
A2
Direct
I
Size in
Active Inactive In. (mm)
5 (127)
Relay
112 (13)
160 (71)
314 (19)
A
314 (19)
l-1/2 (38)
I
-
All78 A1053
-
A7
-
A1202 All86 A1061
-
A8
314 (19)
13 (330)
l-1/2 (38)
with Gradutrol
314 (19)
i
Cl067
I-
C l 0 6 7 C3XH
Cl075
I-
C l 0 7 5 C3XK
8 (203)
103)
-
Cl141
-
C9XH
-
Cl158
-
C9XK
5 (127)
l/2 (13)
2-7
(14-48)
No
8-l 2 (55-83)
1
3-91 75-5500
Table 1. MO953hW53 Specifications (Continued).
MP953
Active 1
Inactive
I Cl166
Device Type
MO953
Sh?In
1 Inactive In (mm)
Active
-
I
c9xL
5 (127)
Direct acting
Travel in
In (mm)
1n (13)
314 (19)
no Relay or
positioner
(Cant)
8-12 (55-83)
4-l 1 (28-76)
8 (203)
I
Cl414
C l 4 7 1 Cl125
C l 4 8 9 Cl133
-
-
Cl471
Cl489
C8XH
C8XL
Cl554 Cl562 -
-
with positive
positioner
Cl554
Cl562 7-118 (181)
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)
160 (71)
10 (69)
l-l/2 (38)
314 (19)
D1206
D1206t
D1214
D1222 D1230
D1214t
-
D1222
-
-
-
-
8 (203)
l-112 (38)
-
-
-
13 (330)
1-K (38)
-
-
-
-
-
-
I-
I-
!I
I-
I-
I
-
-
-
-
-
Direct acting
13 (330)
250 (121)
-
D1248
D1255
El301
El319
El327
El277
El285
El293
El368
El376
El384
El392
El400
El418
El427
Reverse acting
with positive
wsitioner
El435
El443
F1119 FllOl
-
F1093 -
*Diaphragm color indicates maximum temperature:
Black (Neoprenetl6OF (71C)
Black with White Dot (Ethylene Propylene-250F (121C)
75-5500
-
3 (330)
10 (69)
7 (180)
,
No
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).
1
THERMOSTAT
POSITIONER
In a reverse-acting (nc. 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 through the
valve.
In Actuators without Gradutrol Relays or positive
positioners, branchline pressure is applied to the
diaphragm. In Actuators with Gradutrol Relays or positive
positioners, up to full main air pressure is applied to the
diaphragm to ensure the valve is positioned proportionally
to the pilot pressure (the branchline pressure output from
the controlling device).
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 other
visible problems.
CLEANING
Clean the Actuator with a commercial cleaning solvent or
degreaser.
A WARNING A
Careless handling of solvents can cause permanent
respiratory or skin damage. Avoid prolonged exposure to
solvents.
OPERATIONAL CHECK 2
Vary the branchline (pilot) pressure through the
operational range of the Actuator in both directions. The
valve 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 the
top of the sequencing range (span): 13 psi (90 kPa) is
the minimum main pressure for the device to function.
Slowly increase pilot pressure and note the pressure at
which the valve stem begins to travel. This pressure
should be within kO.75 psi (5 kPa) of the start point
setting of theMP953AandB‘ForMP953EandF, the
pressure should be within +l psi (7 kPa) of the start
point.
Continue increasing the pilot pressure until the valve
stem stops traveling. This pressure should be the start
point pressure plus the range (span) setting.
75-5500
SET OPERATING RANGE
MP953E, F
MP953A, B
Change the operating range of MP953E and F by
replacing the feedback spring with one for the desired range
(see REPAIR).
1, Use Wrench 301572A to loosen the cover locking
screw (Fig. 2).
2. Unscrew the start point adjustment knob until thread
is 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 range
adjustment screws.
ADJUST START POINT
MP953A, B
RANGE ADJUSTMENT SCREWS
(BLANK) - (3)
START POINT
ADJUSTMENT
Reinstall setpoint knob.
Tighten knob by turning it until it is seated on relay
body (Fig. 2).
Loosen knob (maximum of one turn) until start point
of correct scale range lines up with start point
indicator.
Tighten knob locking screw until it engages relay
body. Do not overtighten.
E ADJUSTMENT
M IUM PLATED) -
RANGE
ADJUSTMENT
INSTRUCTIONS
SHOWN HERE
RELA‘i BODY
MP953E, F
Set the start point on the positioner to the value shown on
the job drawings. Critical applications and feedback spring
changes mightrequire fine-tuning the start point. Each click
of the start point knob will adjust the start point 0.25 psi (1.7
kPa).
8817-I
Fig. 2. Adjustment Points of M0953/MP953A and B
Gradutrol Relay.
75-5500
4
TROUBLESHOOTING
EQUIPMENT NEEDED
SYMPTOMS AND CORRECTIVE
ACTION
Troubleshooting procedures require Pressure Gage
14003519 (0 to 30 psi [O to 207 kPa]).
Figures 3 and 4 show troubleshooting flowcharts.
CHECK THAT ACTUATOR
IS SECURELY MOUNTED
AND STEM EU-lTON IS
PROPERLY LATCHED
NO
f
PRESSURETO
A
DOES
RANGE VALUE
LOOSEN POSiTlONER
SETPOINT COVER. SLOWLY
TURN COVER SCALE TO
BELOWZERO START POINT.
ADJUST POSITIONER
START POINT DIALTO
MINIMUM VALUE
I
RECAUBRATE
POSITIONER START
POINT IF NECESSARY
NO
Y
REMOVE ANY FOREIGN
MATERIAL; AND/OR
REPAIR DISC, SEAT.
AND STEM; AND/OR
REPACK VALVE
Fig. 3. Troubleshooting Flowchart for MP953A, B, E, F (with Gradutrol Relay/Positioner).
5
IS SECURELY h4OUNTED
AND STEM 6UlTON Is
PROPERLY LATCHED
NO
I
REPLACE ACTUATOR
DIAPHRAGM AND/OR
SLEEVE
ADEQUATE FOR
COMPLETE
S-EM MOVE
ACTUATOR IS OK.
RESTORE SYSTEM
TO SERVICE.
REMOVE ANY FOREIGN
MATERIAL; AND/OR
REPAIR DISC, SEAT,
AND STEM; AND/OR
REPACK VALVE
Fig. 4. Troubleshooting Flowchart for MP953C, D (without Gradutrol Relay/Positioner).
75-5500
REPAIR
Table 4. Loosening and Removing Actuator Bases from
Valve Bonnets.
GENERAL
Device
This section lists tools needed to disassemble and
reassemble Actuators and gives procedures for replacing
parts of actuators. See PARTS AND ACCESSORIES for
parts diagrams and lists.
Model
MP953A
MP953c
MP953E
EQUIPMENT NEEDED
Mp953c
MP953E
Actuator
Series Dia (In.)
NOTE: Used only
Tables 2 through 5 list basic repair tasks and the tools
required for each.
Table 2. Removing and Replacing Actuator Covers.
1989 or later date
MP953A
MP953c
MP953E
‘~
Model
MP953B
1/4-h hex socket
- 3/8-in hex socket
- Two l/4-20 x 3 in. hex-head
bolts, threaded to within
l/%-in. of bolt head
- 3/8-in. hex socket
-Four 5/16-18 x 3 in. hex-head
bolts, threaded to within
l/2-+1. of bolt head
5/16-in. hex socket
MP953D
MP953F
MP953A
MF953c
h4P953E
Au
5
8
13
MP953B
MIY53D
MP953F
All
7
Tools Required
3/16-in hex allen wrench (bit)
or T-25 Torx bit
NOTE Series number does not
actuators regardless of date
umber does not
Table 5. Miscellaneous Tasks.
Task
Removing MP953A
Gradutrol Relay positioner
Tools Required
Crescent wrench with jaw
opening to at least 2-5/8 in. (67
mm). Narrow-jaw pipe wrench or
large adjustable pliers may be
substituted as long as they do not
distort the setpoint knob.
Removing MP953E positive Adjustable crescent wrench with
jaw opening to at least 2-5/8 in.
positioner
(67 mm).
Table 3. Removing and Replacing Actuator Bases.
De vice
Model
MP953A
MP953c
MP953E
MP953F
Actuator
Tools Required
Series Dia (In.)
5/16-in. hex socket
5
2
5/16-in. hex socket or T-25
2
Torx bit
1
NOTE: Series number does not
indicate type of
fastener.
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)
1
3/16-in. hex allen wrench (bit)
or T-25 Torx bit
NOTE: Series number does not
indicate type of
fastener.
Removing hJP953B
Gradutrol Relay positioner
bracket assembly
5/16-in. hex socket
Removing MP953F positive
positioner bracket assembly
Removing and replacing
MP953B, D, F sleeve
diaphragm
- Small-blade screwdriver
-3/16-m hex socket
- l-3/8-in. adjustable hex socket
(crescent wrench is acceptable
substitute)
Replacing feedback-spring
cup on MP953A, E main
diaphragm
Unlatching actuator from
valve stem button
Pliobond glue or equivalent
Lubricating MP953A
Gradutrol Relay positioner
O-ring
Lubricant or silicone grease
obtained locally
Medium- to large-blade
screwdriver
Lubricating MP953E
positive positioner O-ring
75-5500
GRA DUTRO
‘ELAY ASSEMBLIES
31371 I
(MP953B) A ’
SPRING [email protected]
313695 J
/--_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
A
1
THE 313711A AND D MODELS HAVE
DUAL BARBED CONNECTORS; THE
3137118 AND C MODELS USE PlPt=
THREAD CONNECTION. THE 313711A
AND 8 MODELS HAVE DUAL SCALE,
ENGLISH AND METRIC; THE 313711C
AND D MODELS HAVE ENGLISH
. . -
START POlNT
SPRING
5!32c-2
Fig. 5. Gradutrol Relay Assemblies Exploded View.
75-5500
8
MO953 CONVERSION
JO CONVFRT A4 DFVICF8 IN. (203 MM)
RELAY ASSY 313695J
FEEDBACK SPRING
3 13696-00063
CUP 315178-00062
DIAPHRAGM 311750 OR
314153
CUP 31174O-OO602
72
- S C R E W
Q-WASHER
- PLATE
@
TO CONVFRT A8 DWICF13 IN. (330 MM)
RELAY ASSY 313695J
FEEDBACK SPRING
313814-00605
CUP 315178-00062
DIAPHRAGM 312505
CUP 315020-00124
- D I A P H R A G M
- Black with white spot: Ethylene Propylene (EPR)
Maximum temperature 250F (121C)
Used on MP953B, D and F
- White: Silicone
Maximum temperature 250F (12 1C)
Used on MP953A and C and may be installed on
MP953E
Flat diaphragms and beaded-roll diaphragms are not
interchangeable. Neoprene and EPR diaphragms are
interchangeable but must meet maximum temperature
requirements.
MP953A, C, E DIRECT-ACTING ACTUATORS
Direct-acting Actuators are subject to extremely high
internal spring loads. Therefore, Actuator covers must be
removed very carefully before the the main diaphragm can
be replaced.
Fig. 6. MO953 Conversion.
When using the following procedures, see Figures 8 and
10 for exploded diagrams and Tables 6 and 8 for parts.
YOKE ASSEMBLY
REMOVE ACTUATOR COVER
A WARNING A
SPRING
314652
Use extreme caution when disassembling Actuators.
Actuator assemblies are under spring load which can reach
1. Disconnect all air lines, including any connected to
Gradutrol Relay or positive positioner, if present.
YOKE
314651 (314651A)
316059 (316059A)
2. MP953A and E only: Remove Relay/positioner from
314653
ASSEMBLY 316059A-FOR SUPPORT WITH
HELICOIL INSERT
ASSEMBLY 314651A-FOR SUPPORT WITH
NYLON INSERT
14732-l
Fig. 7. Yoke Assembly.
REPLACE MAIN DIAPHRAGM
GENERAL
Before replacing the diaphragm, determine the type and
material of the existing diaphragm according to its color:
- Black: Neoprene
Maximum temperature 160F (71C)
Used on MP953A, 6, and E
Actuator cover by turning counterclockwise.
3. Remove exposed feedback spring.
4. See WARNING in this section. Loosen cover
setscrews sequentially l-1/2 turns each.
5. Check whether cover can be squeezed back to frame
by hand. If so, continue sequentially loosening screws
until cover is free. Remove cover, diaphragm, and go
to REPLACE DIAPHRAGM.
6. If cover cannot be squeezed back to frame, use the
following guides according to Actuator size.
NOTES:
a. Bolts should be threaded to within
approximately l/2 in. of their heads.
b. In each case, turn the long bolt in until its head
contacts the cover flange.
- 8-m Actuator: Remove two cover screws
that are directly opposite each other. Replace
cover screws with l/4-20 x 3 in. bolts.
75-5500
- 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.
5. Reinstall small sleeve cup, ring, and screws.
6. Install new main diaphragm, checking that it is
properly located.
7. Reinstall cup, lockwasher, and nut. Tighten nut
enough to seal diaphragm against cup.
8. Reinstall feedback spring. Check that spring is
securely seated in grooves on lever and cup support.
9. Reinstall cover and cover screws.
10. Reinstall air lines and restore system to service,
REPLACE DIAPHRAGM
REPLACE ACTUATOR BASE
1. Fit new diaphragm over Actuator cup. Position cover
over diaphragm,
2. Reinstall Actuator cover following procedure in
REMOVE ACTUATOR COVER in reverse order.
NOTE: In some cases, cup and diaphragm will be
forced above top of frame. As cover is
tightened, check that diaphragm bead is
properly positioned in its retention groove.
3‘ MP953A and E only: Cement positioner feedback
spring cup to new diaphragm. Cup must be centered
in hole of Actuator cover.
4. Reassemble feedback spring and Relay/positioner.
Make certain that each end of spring is located in a
spring cup (one end on diaphragm and the other end
in Relay/positioner) before screwing Relay/
positioner back into position.
5, Reinstall air lines and restore system to service.
MP953A, C, E DIRECT-ACTING ACTUATORS
When using the following procedure, see Figures 8 and
10 for exploded diagrams and Tables 6 and 8 for parts.
A WARNING A
Use extreme caution when disassembling Actuators.
Actuator assemblies are under spring load which can reach
550 pounds.
1. To eliminate internal forces in Actuator assembly and
remove Actuator cover, refer to REMOVE
ACTUATOR COVER under MP953A, C, E
DIRECT-ACTING ACTUATORS in REPLACE
MAIN DIAPHRAGM section.
2. Remove Actuator cup, spring, retainer, plate,
mainspring, and ring (5-in. models only).
3. Remove fasteners securing base to frame.
4 Install new base assembly and reinstall fasteners.
5. Reassemble Actuator assembly by following
procedure in Steps 1 and 2 in reverse order.
6. Reinstall air lines and restore system to service.
MP953B, D, F REVERSE-ACTING ACTUATORS
Reverse-acting Actuators are not subject to high internal
spring loads. Therefore, the Actuator cover can be removed
routinely.
Replace diaphragm and sleeve (inner seal) together. Use
SERVICELINE Kit 14003 124-002 for all Actuators. Parts
are rated at 250F (121C).
MP953B, D, F REVERSE-ACTING ACTUATORS
When using the following procedure, see Figures 9 and
11 for exploded diagrams and Tables 7 and 9 for parts.
When using the following procedure, see Figures 9 and
11 for exploded diagrams and Tables 7 and 9 for parts.
A WARNING A
To safely disassemble and reassemble reverse-acting
Actuators with 8 psi start point, a mechanical advantage is
required due to the high compression of the main spring
(200 pounds). For safety, use a large bench vise or C-clamp
and two blocks of wood.
Disconnect all air lines, including any connected to
Gradutrol 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 sleeve
diaphragm.
Install new sleeve diaphragm, checking for proper
seating in its locating groove.
75-5500
1. To release support assembly from Actuator cup, refer
to Steps 1 through 3 in MP953B, D, F REVERSEACTING ACTUATORS under REPLACE MAIN
DIAPHRAGM.
10
NOTE: Considerable force may be required before
the positioner begins to turn because of the
large O-ring that seals the Relay/positioner
to the Actuator cover.
3. Remove feedback spring. Retain old spring for
MP953A.
4. Install original feedback spring in diaphragm cup
when Relay/positioner is being replaced with an
identical device.
5. When replacing Gradutrol Relay with a new-style
positive positioner, discard original spring and install
feedback spring with proper range from appropriate
retrofit kit. For part number, see POSITIONER
RETROFIT AND SPRING KITS in PARTS AND
ACCESSORIES.
6. Position new O-ring in groove of Relay/positioner
base and install new Relay/positioner in Actuator
cover.
NOTE: Compress feedback spring as the Relay/
positioner is screwed in place. Check that
both ends of the feedback spring are located
in the spring cups, one in the Relay/
positioner and one cemented to the Actuator
diaphragm.
7. Tighten Relay/positioner only enough to seat large O-
2. See WARNING in this section. Sequentially loosen
fasteners securing base to frame. Base pops up from
frame when fasteners disengage.
3. When tension is relieved, remove fasteners and base.
4. Install new base assembly.
5. Reinstall fasteners.
6. Reassemble Actuator assembly by following
procedure in Steps 1 and 2 in reverse order.
7. Reinstall air lines and restore system to service.
REPLACE ACTUATOR MAIN
SPRING
MP953A, C, E DIRECT-ACTING ACTUATORS
Remove the main spring on direct-acting Actuators safely
by following the procedure in REMOVE ACTUATOR
COVER under MP953A, C, E DIRECT-ACTING
ACTUATORS in REPLACE MAIN DIAPHRAGM
section. This procedure relieves all internal spring force and
makes the spring fully accessible.
See PARTS for the proper replacement spring.
MP953B, D, F REVERSE-ACTING ACTUATORS
Remove the main spring on reverse-acting Actuators
safely by following the procedure in MP953B, D, F
DIRECT-ACTING ACTUATORS in REPLACE MAIN
DIAPHRAGM section. This procedure relieves all internal
spring force and makes the spring fully accessible.
of position and damage Actuator diaphragm and
feedback 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.
See PARTS for the proper replacement spring.
REPLACE GRADUTROL RELAY/
POSITIVE POSITIONER
MP953B, F REVERSE-ACTING ACTUATORS
When using the following procedure, see Figure 9 for an
exploded diagram and Table 7 for parts
MP953A, E DIRECT-ACTING ACTUATORS
Disconnect all air lines, including short tube from
Relay/positioner to side of Actuator cover.
Remove three screws that locate the Relay/positioner
bracket assembly on the Actuator cover.
Remove bracket assembly. Retain original bias and
feedback springs when Relay/positioner is being
replaced with an identical device,
When replacing Gradutrol Relay assembly with newstyle positive positioner assembly, discard original
bias and feedback springs and install springs with
proper range from appropriate retrofit kit. For part
number, see POSITIONER RETROFIT AND
SPRING KITS in PARTS AND ACCESSORIES.
When using the following procedure, see Figure 8 for an
exploded diagram and Table 6 for parts.
To prevent damage to the MP953E, wrench force must only
1. Disconnect all air lines.
2. Unscrew Relay/positioner counterclockwise from
Actuator cover and remove.
.l
75-5500
5. Replace service plate and reinstall positioner.
Check that ends of bias and feedback springs are
properly located. Install new Relay/positioner
bracket assembly on Actuator cover.
Replace short tube from Relay/positioner branch port
to fitting on side of Actuator cover.
Reinstall remaining air lines and return system to
service.
Adjust range (MP953B only) and/or start point. See
MAINTENANCE.
6. Reconnect tubing and restore system to service.
INSTALL STEM ANTISPIN
FEATURE (MP953A, C, E)
GENERAL
REPLACE GRADUTROL RELAY/
POSITIVE POSITIONER
FEEDBACK SPRING
A valve stem will not spin when it is locked to the
Actuator. The antispin feature is built into 13-inch
MP953A, C, and E and can be added to the 5- and 8inch
MP953A, C, and E. Adding the antispin feature involves
modifying the latching mechanism in the Actuator then
replacing the stem button on top of the valve.
See appropriate part of REPLACE GRADUTROL
RELAY/POSITIVE POSITIONER for correct feedback
spring replacement procedures.
‘when using the following procedures, see Figures 8 and
10 for exploded diagrams and Tables 6 and 8 for parts.
MODIFY ACTUATOR
REPLACE GRADUTROL RELAY/
POSITIVE POSITIONER FILTER
1. Disconnect air lines.
2. Loosen two Actuator base/valvebonnet setscrews and
MP953A, B WITH GRADUTROL RELAY
3.
When using the following procedure, see Figures 5, 8,
and 9 for exploded diagrams and Tables 6 and 7 for parts.
4.
1. Remove tubing.
2. Remove Gradutrol Relay air fittings.
3. Remove filters from Relay ports with pointed tool
5.
such as an awl.
4. Install foam filters, taking care not to fold filters or
bunch them together.
6.
7.
5. Reinstall fittings and tubing. Restore system to
service.
MP953E, F WITH POSITIVE POSITIONER
REPLACE VALVE STEM BUTTON
When using the following procedure, see Figures 8 and 9
for exploded diagrams and Tables 6 and 7 for parts.
Use the following procedure to replace the stem button on
lf2- to 3-inch V5011 Valves and l/2- to 2-inch V5013A
Valves. The procedure requires Stem Button 3 12495.
Remove tubing.
To remove positioner from Actuator cover, follow
appropriate procedures under REPLACE
GRADUTROL RELAY/POSITIVE POSITIONER.
Remove service plate (Fig. 12 through 14) from
positioner.
Replace filter assembly with Filter Assembly
14001865-001.
75-5500
release stem button latch located on underside of
Actuator cup.
Remove Actuator from valve.
On Relay/positioner equipped Actuators (MP953A
and E), refer to appropriate procedures under
REPLACE GRADUTROL RELAY/POSITIVE
POSITIONER. Remove feedback spring.
Remove Actuator cover, diaphragm, cup, spring,
retainer, and plate. Refer to appropriate procedures
under REPLACE MAIN DIAPHRAGM for
disassembly.
Replace plate with Antispin Plate 3 11975A.
Reassemble retainer, spring, cup, diaphragm, cover,
and positioner.
Remove existing stem button.
Replace old button with new button, checking that the
new button is installed at the same height as the old
button.
Reinstall Actuator on valve.
Reconnect air lines and restore system to service,
12
PARTSANDACCESSORIES
PARTS
Figures 8 through 11 show exploded diagrams of
M0953A-D and MP953A-F Actuators. Tables 6 through
11 list parts shown in the figures.
24076
Fig. 9. MO/MP953B and MP953F Exploded View.
Fig. 8. MO/MP953A and MP953E Exploded View.
13
75-5500
Table 6. MOLMP953A and MP953E Parts.
313814~OGO65
313696-00063
t 14004698-001
1 312099
21 1 1 4 0 0 4 2 9 8 - 0 0 5
14003034-261
14003034-264
Feedback spring for l-l/2-in. stroke MP953A (see NOTE 2)
Feedback spring for 3/4-in. stroke MP953A (see NOTE 2)
Frame for g-in. models, includes screws
Frame for 13-in. models
Base for 5-in. models, includes screws
Base for g-in. models
Base for 13-in. models, 3/4-in. stroke
Base for 13-in. models, l-l/2-in. stroke
Replace with l/4-20 x 5/8 in. can-head machine screw (2) for 5-in. models
Replace with 5/16-18 x I- l/4 in. cap-head machine screw (2) for g-in. models
Replace with 5/16-18 x l-314 in. cap-head machine screw (2) for 13-in. models, 3/4-in. stroke
Rentace 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. models
Basescrew (2), l/2-13 x i-1/2 in. for g-in. models
Basescrew (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. (19
in. (330 mm)
mm)l-l/2 in. (38
2. For MP953E feedback spring, see Table 13.
75-5500
14
Table 7. MO/MP953B and MP953F Parts.
Kev
1
I
Part Number
-
NO:
1
Obtain locally
14004080-00 1
Gradutrol Relay assembly for MP953B, use 14004138-001 Positive Positioning Retrofit Kit.
Hex-head screw (2), lo-24 x 506 in.
Filters (3)
Tubing connector, l/8 NPT, for MP953B
Positive positioner and bracket assembly for MP953F, includes filter 14001865-001
Obtain locally
314420-01508
140040 15-00 1
Copper or plastic tubing, l/4 in.
Bias spring for Gradutrol Relay
Bias spring for positive positioner
Obtain locally
3 16579
2
I
Description
I
I
Y
L
L
8
9
Obtain locally
14004665-00 1
Hex-head screw (6), 10-24 x 3/4 in.
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)
.
Nut
11
12
13
14
3 12205
304733
312199
[email protected]
1 314524
v
Lockwasher
CUP
Diaphragm for all temperature ranges (see NOTE 2)
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
Y
Fig. 10. MOjMP953C Exploded View.
75-5500 PUC 9-90
24079
Fig. 11. MO/MP9531> Exploded View_
16
Table 8. MO/MP953C Parts.
Key
No.
1
2
3
7
8
9
10
11
12
13
Part Number
312817
311748
312103
Obtain locally
Obtain locally
Obtain locally
Obtain locally
310673
312760
3 10668
3 13745
3 14683-00062
310501-00021
31197514
3 14646-00062
See Table 10
3 10665-00062
14004613-001
14004611-001
312101
14004577-001
311744
14004698-001
312099
Obtain locally
Obtain locally
Obtain locally
Obtain locally
14004298-003
14004383-562
30462 I-00605
Description
Cover for 5-in. Series 2 model
Cover for 8-in. model
Cover for 13-m. model
Fillister-head screw, 6-32 x l/2 in. for early models (8)
Fillister-head screw, 8-32 x l/2 in. for 5-in. model (4)
Filhster-head screw, l/4-20 x 3/4 in. for 8-in. model (6)
Fillister-head screw, 5/l 6-18 x 7/8 in. for 13-in. model (4)
Main diaphragm for old 5-in. models Al, A5, A9; 160F (71C), neoprene black
Main diaphragm for 5-in. models neoprene black
Main diaphragm for old 5-in. models A2 and A6; 250F (121C), silicone white
Main diaphragm for 5-in. models, (121C), silicone white
Retainer for 13-in. model
Plate for 5- and S-in. models, 3/4-in. stroke
Plate for 8-in. model, l-l/2-in. stroke, with antispin
Plate for 13-in. model
Mainspring
Ring for 5-in. model
Frame for 5-in. model, includes screws
Frame for 8-in. model, includes screws
Frame for 13-in. model
Base for 5-in. model, includes screws
Base for 8-in. model
1 Base for 13-in. model, 3/4-in. stroke
Base for 13-in. model, l-l/2-in. stroke
Replace with l/4-20 x 5/8 in. cap-head machine screw (2) for 5-in. model
Replace with 5/l 6-l 8 x l-1/4 in. cap-head machine screw (2) for 8-in. model
Replace with 5/16-18 x l-3/4 in. cap-head machine screw (2) for 13-in. model, 3/4-in. stroke
Replace with 3/8-16 x l-1/2 in. cap-head machine screw (2) for 13-in. model, I-l/2-in. stroke
Base screw (2), l/4-20 x 3/4 in. for 5-in. model
Base screw (2), l/2-13 x l-1/2 in. for 8-in. model
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
3 I 14004660-001
4
3 1220.5
5
304733-00021
6 1
312199
Hex-head screw with lockwasher (6), lo-24 x 3/4 in.
I Cover
Nut
Lockwasher
I CUD
I Washer
1 314524
15 I 3 12200-00767
16
I CUD
Support Assembly with helicoil insert for Series 2 models only. Convert MOIMP953D
3 14650A
I
17 I 1 4 0 0 4 5 7 8 - 0 0 1
18
3 1605914
3 1465 1A
19
14004298-003
for 3/4-in. stroke model
Series 1 to Series 2 with this Support Assemblv and 3 16059A Yoke Assemblv.
Base. includes set screw
Yoke Assembly for Support Assembly with helicoil insert (see detail in Fig. 7)
Yoke Assembly for Support Assembly with nylon insert (see detail in Fig. 7)
Socket-cap base screw (2). l/4-20 x l-3/4 in.
1 Replace with l/4-20 x 5/8 in. cap-head machine screw
20 1 Obtain locally
NOTE 1. Diaphragm and Sleeve (Seal) available in Kit 14003124-002.
B
Table 10. MP953C Mainsprings.
Actuator Stroke
Diameter In.
In. b-m
5
(127)
m-4
Color
l/2 (13) Brown
Gray
Table 11. MP953D Mainsprings.
Pressure Range
psi &Pa) - Part Number
2-7 (14-48)
8-12 (55-83)
-
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.
*Used on MP953A and E models.
75-5500
8
Tbl II
POSITIONER RETROFIT AND
SPRING KITS
Table 12. MP953 Positive Positioner Retrofit Kits.
Table 13. MP953 Feedback Spring 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 valve
actuators (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).
(Positioner has cream-colored lower
plate.)
Part No.
Description*
1400421 l-001 For 3/4-in. (19-mm) stroke DA vahs
14004212-001~ For l-l/&in. (38-mm) stroke DA
14004213-001 For RA valve actuators (includes bias
I spfiw~
* All kits include springs with 3-, 5, and lo-psi (21-,
34-, and 69-kPa) range.
I
* Includes corresponding feedback spring kit listed in
Table 13.
Fig. 12. Positive Positioner Retrofit Kit 14004138-001.
19
PUC 9-90 75-5500
GREEN
10 PSI (69 KPA)
BLUE
10 PSI (69 KPA)
GRAY
5 PSI (34 KPA)
YELLOW
5 PSI (34 KPA)
O-RING
312602
RED
3 PSI (21 KPA)
BLACK
3 PSI (21 KPA)
D-RING
312602
FEEDBACK SPRING K
.
_
14004211-001
R27151
R2719-1
Fig. 14. Positive Positioner Retrofit Kit 14QO4 140-001
(l-1/2 in. stroke).
Fig. 13. Positive Positioner Retrofit Kits 14004139-001
and 14004214-001 (3/4 in. stroke):).
75-5500
FEEDBACK SPRING KIT
14004212-001
20
EXTENSION
312518-00062
1
Cb - SETSCREW
l/4-28 X 114 IN.
Q
E
i
BUTTON
31 .0503-00062
3 12
0
ACTUATOR STEM EXTENSION
311851-00062 - 8 IN. MODEL
ACTUATOR STEM AND SETSCREW
13 IN. MODEL. l-1/2 IN. STROKE
I
314 IN. STROKE
ADAPTER
14001162-001, -002. -003, -004
ADAPTS MP953C TO V053,
VO55 OR V056 FOR COMPLETE CROSSREFERENCE iNFORMATION ON VALVES,
SEE 95-5579
POSITION INDICATOR FOR.
5IN. (127 MM) DIA-316028A
7-IN (178 MM) DIA-316035A
8-IN (203 MM) DIA-316037A
13-IN (330 MM) DIA, 314 IN (19 MM) STROKE-1400d722-001
13-IN (330 MM) DIA, l-112 IN (38 MM) STROKE-316036A
CORRCSION RESISTANT SPRAY
MSC 3858
I
Fig. 15. MP953 Accessories.
21
8825.2
7545500
Honeywell
Home and Building Control
Honeywell Inc.
Honeywell Plaza
P.O. Box 524
Minneapolis, MN 55408-0524
75-5.500
7-89
Home and Building Control
Honeywell Limited-Honeywell Limit&z
740 Ellesmere Road
Scarborough, Ontario
MlP 2V9
Helping You Control Your World
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