Honeywell MO953 Series Istruzioni per il montaggio

DESCRIPTION

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.

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).

APPLICATION

These Actuators operate the

V5011

and

V5013

Valves

and certain other coil, line, and zone valves that

GENERAL

proportionally control steam or hot and cold liquids in

HVAC systems.

SPECIFICATIONS

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

MAXIMUM SAFE AIR PRESSURE

25 psi (172

kPa)

See Table 1 for additional specifications.

Table

MO953/MP953

Specifications.

MP953

MO953

Size in

Device Type Active Inactive Active Inactive In. (mm)

Direct

acting

A1087 A1004 A1210

Al 5 (127)

with Gradutrol

Al095 A1012 Al228

Relay

All78 A1053

A1202 All86 A1061

A8 13 (330)

with Gradutrol

Cl067

I-

Cl067 C3XH 8 (203)

Cl075

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)

3-91 75-5500

Table

MO953hW53

Specifications (Continued).

MP953

MO953

Sh?In

Device Type

Active

Inactive Active

Inactive In (mm)

Cl166

c9xL

(127)

Travel

In (mm)

(13)

314

(19)

Direct acting

no Relay or

positioner

(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

Cl471 Cl125

Cl471

C8XH 13 (330)

l-l/2

(38)

Cl489 Cl133 Cl489

C8XL

Cl554

Cl562

314

(19)

7-118

(181)

D1206 D1206t

D1214 D1214t

D1222

D1230

D1248

D1255

El301

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-

El435

El443

-I-

I-

Reverse acting

F1119

(180)

with positive

FllOl

wsitioner

F1093

10 (69)

160 (71) 10 (69)

*Diaphragm color indicates maximum temperature:

Black

(Neoprenetl6OF

(71C)

Black with White Dot (Ethylene Propylene-250F

(121C)

75-5500

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

(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).

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 other

visible problems.

CLEANING

Clean the Actuator with a commercial cleaning solvent or

degreaser.

AWARNINGA

Careless handling of solvents can cause permanent

respiratory or skin damage. Avoid prolonged exposure to

solvents.

OPERATIONAL CHECK

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)

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

theMP953AandB‘ForMP953EandF, the

pressure should be within

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

MP953A,

Use Wrench 301572A to loosen the cover locking

screw (Fig. 2).

Unscrew the start point adjustment knob until thread

is disengaged. Remove knob.

For

psi (21

kPa)

range, back all range adjustment

screws off to friction stop.

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.

MP953E,

Change the operating range of

MP953E

and F by

replacing the feedback spring with one for the

desired

range

(see REPAIR).

ADJUST START POINT

MP953A, B

RANGE ADJUSTMENT SCREWS

(BLANK)

(3)

START POINT

ADJUSTMENT E ADJUSTMENT

M IUM

PLATED)

RANGE

ADJUSTMENT

INSTRUCTIONS

SHOWN HERE

RELA‘i BODY

8817-I

Fig. 2. Adjustment Points of

M0953/MP953A

and B

Gradutrol Relay.

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.

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).

75-5500

TROUBLESHOOTING

EQUIPMENT NEEDED

Troubleshooting procedures require Pressure Gage

14003519 (0 to 30 psi

to 207

kPa]).

SYMPTOMS AND CORRECTIVE

ACTION

Figures 3 and 4 show troubleshooting flowcharts.

CHECK

THAT

ACTUATOR

IS SECURELY MOUNTED

AND STEM EU-lTON IS

PROPERLY LATCHED

PRESSURETO

DOES

RANGE VALUE

LOOSEN POSiTlONER

SETPOINT COVER. SLOWLY

TURN COVER SCALE TO

BELOWZERO START POINT.

ADJUST POSITIONER

START POINT

DIALTO

MINIMUM VALUE

RECAUBRATE

POSITIONER START

POINT IF NECESSARY

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).

IS SECURELY h4OUNTED

AND STEM

6UlTON

PROPERLY LATCHED

ADEQUATE FOR

COMPLETE REPLACE ACTUATOR

DIAPHRAGM AND/OR

SLEEVE

S-EM MOVE

REMOVE ANY FOREIGN

MATERIAL; AND/OR

REPAIR DISC, SEAT,

AND STEM; AND/OR

REPACK VALVE

ACTUATOR IS OK.

RESTORE SYSTEM

TO SERVICE.

Fig.

Troubleshooting Flowchart for

MP953C,

D (without Gradutrol Relay/Positioner).

75-5500

REPAIR

Table 4. Loosening and Removing Actuator Bases from

Valve Bonnets.

GENERAL

Device Actuator

Series Dia (In.)

Model

Tools Required

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.

MP953A

MP953c

MP953E

3/16-in hex

allen

wrench (bit)

or T-25 Torx bit

NOTE Series number does not

NOTE:Used only

1989

or later date

actuatorsregardlessof date

umber does not

Table 5. Miscellaneous Tasks.

EQUIPMENT NEEDED Mp953c

MP953E

Tables 2 through 5 list basic repair tasks and the tools

required for each.

MP953A

MP953c

MP953E

Table 2. Removing and Replacing Actuator Covers.

Model

‘~

MP953A

MF953c

h4P953E

MP953B

MIY53D

MP953F

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

All

5/16-in.

hex socket

MP953B

MP953D

MP953F

Task Tools Required

Removing

MP953A

Gradutrol Relay positioner

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

positioner Adjustable crescent wrench with

jaw opening to at least

2-5/8

in.

(67 mm).

Table 3. Removing and Replacing Actuator Bases.

5/16-in. hex socketRemoving

hJP953B

Gradutrol Relay positioner

bracket assembly

Removing

MP953F

positive

positioner bracket assembly

De vice

Actuator

Model

Series Dia (In.)

MP953A

MP953c 2

MP953E

Tools Required

5/16-in.

hex socket

5/16-in.

hex socket or T-25

Torx bit

NOTE: Series number does not

indicate type of

fastener.

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)

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 bit

NOTE: Series number does not

indicate type of

fastener.

Pliobond glue or equivalentReplacing feedback-spring

cup on

MP953A,

E main

diaphragm

Unlatching actuator from

valve stem button Medium- to large-blade

screwdriver

MP953F 1 Lubricating

MP953A

Gradutrol Relay positioner

O-ring

Lubricant or silicone grease

obtained locally

Lubricating

MP953E

positive positionerO-ring

75-5500

GRADUTRO

‘ELAY

ASSEMBLIES

313695 J

31371

(MP953B)

’

SPRING

/--_315178

CUP

6-32 X

l/4

ROUND H

SCREW

0-80X

5/16 ROUND

NUT OS0 X .05

IN.

THICK

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

VALVE UNIT

CUP ASSY

START POlNT

SPRING

THE 313711A AND D MODELS HAVE

DUAL BARBED CONNECTORS; THE

3137118 AND C MODELS USE

PlPt=

THREAD CONNECTION. THE

313711A

AND

MODELS HAVE DUAL SCALE,

ENGLISH AND METRIC; THE 313711C

AND D MODELS HAVE ENGLISH

5!32c-2

75-5500

Fig. 5.

Gradutrol

Relay Assemblies Exploded View.

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