Emerson V150 Bedienerhandbuch PDF herunterladen (Seite 22)

Basis Weight Actuator

WARNING

The valve ball or disk closes and opens

with a shearing, cutting motion. Avoid

personal injury from this motion by

keeping hands, tools, and other objects

away from the valve ball or disk.

3. Loosen the socket–head screws in the valve shaft

clamp (see figure 17). The valve shaft clamp is located

on the actuator where the valve shaft is connected to

the actuator.

4. Remove the cap screws that attach the valve body

to the actuator mounting yoke. If it is desired to re-

move the yoke from the actuator, remove the cap

screws and nuts that attach the mounting yoke to the

actuator.

Mounting the Actuator on the Valve

1. When maintenance is complete, attach the mount-

ing yoke to the actuator if it was removed.

2. Refer to the valve body instruction manual for in-

structions on determining the fully closed position. Ful-

ly close the valve and keep it in that position until this

procedure is complete.

CAUTION

Incorrect valve shaft rotation can dam-

age internal valve parts. To avoid such

damage, be certain that the actuator will

provide the correct rotation direction for

the valve you are using.

Required valve shaft rotation is not the same for all

valves. Design V150 valves require clockwise valve

shaft rotation to open the valve. Before mounting the

valve, check to see that the actuator will provide the

correct rotation to open and close the valve. If the rota-

tion is not correct, change the rotation direction by

changing the switch settings and jumper locations on

the control cards. Refer to the Settings section.

Always use the standard mounting position shown in

figure 17 and check for proper rotation before installing

the actuator on the valve. Other mounting positions

might provide incorrect valve rotation.

3. Use the actuator handwheel to rotate the actuator

mechanism to the closed end of its travel (to the posi-

tion it is to be in when the valve is fully closed).

4. While guiding the valve shaft clamp over the valve

shaft, place the actuator and mounting yoke on the

valve.

5. Check to be sure that the valve is still fully closed.

Then, tighten the socket head cap screws in the valve

shaft clamp. If the valve ball or disk has moved from

the fully closed position, remove the actuator from the

valve, fully close the valve and repeat steps 4 and 5.

6. Attach the mounting yoke to the valve with cap

screws.

Replacing Fuses

1. Remove alternating current power at the external

circuit breaker box.

2. Unlock and open the Stepmotor Interface.

3. Locate fuses. Fuses are in terminal block TB2 and

on the SD13 card.

4. Test the fuses and replace them if needed.

Replacing the Actuator Motor

1. Remove alternating current power at the external

circuit breaker box.

2. Remove the cover plate from the motor. The cable

was sealed to the motor with silicone rubber at the fac-

tory. Remove the seal. Note the wire–terminal connec-

tions so you can re–wire the new motor correctly. Dis-

connect and remove the wires from the motor.

3. Unscrew the four screws and nuts that attach the

motor to the actuator (figure 2). Remove the motor by

separating the two halves of the zero backlash cou-

pler. Inspect the elastomer spider in the coupler; re-

place it if worn or damaged. Keep the coupler as you

may need to use it again during re-assembly.

4. Install the new motor. Make sure the coupling en-

gages both the actuator and the motor output shaft.

Secure the motor with the four screws and nuts.

5. Connect the motor wires to the correct terminals as

you noted in step 2. Re–seal the cable to the motor or

provide another suitable cable connector.

Replacing Modules

1. Remove alternating current power at the external

circuit breaker box.

2. Unlock and open the cover of the Stepmotor Inter-

face.

3. Unlock and open the Stepmotor Interface.

4. Loosen the four captive screws that secure the

module you wish to replace. Pull the module out of the

cabinet.

5. If you are replacing the IC500 or FT100 card, make

the appropriate switch and jumper settings on the re-

placement card. Refer to the Settings section.

Replacing the Transformer

1. If it is necessary to replace the transformer, remove

alternating current power at the external circuit breaker

box. Unlock and open the cabinet.

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