Marwin-valve ER Series Electric Actuators Manuel d'utilisateur télécharger pdf (Page 3)

Installation

The actuator is shipped in the open position from the

factory. It is important to make sure the valve and actua-

tor are in the same position before mounting the actua-

tor on the valve.

Manually open valve.1.

Remove the valve mechanical stops. 2. CAUTION: DO

NOT REMOVE any parts necessary for the proper

operation of the valve, i.e., packing gland, gland

nut, etc.

Check again that the valve and actuator are in the 3.

same position.

Install mounting hardware on valve; do not tighten 4.

bolts securely at this time. Mount actuator to valve;

once actuator screws have been started securely

tighten all nuts and bolts. NOTE: Actuator conduit

entry is normally positioned perpendicular to pipe

line.

Remove actuator cover. Indicator and handwheel, 5.

if any, must be removed rst. Cover may stick to

gasket after fasteners are removed. It can generally

be removed by slapping the sides with an upward

motion. If this doesn’t work, it may be necessary to

carefully pry between the gasket and the cover. Be

careful not to damage the gasket, which is glued to

the base.

Wire actuator, using the wiring diagram inside cov-6.

er. CAUTION: Be sure power is off at the main

power box.

Turn on power to actuator. 7. CAUTION: Use extreme

caution, as there are live circuits that could

cause electrical shock or death.

Operate the valve to the close position, check the 8.

alignment. After checking the alignment of the

valve port, calibration may be required.

To Set the Open Position:

CAUTION: Valves with mechanical stops may be dam-

aged or cause damage to the actuator if allowed to

travel too far open.

Operate valve to the open position by applying 1.

power to terminal connections #1 and #2, the valve

will rotate counter-clockwise (CCW) viewing top of

actuator. NOTE: When the actuator is in the open

position the setscrew securing the cam to the shaft

will be easily accessible.

If valve does not open completely:a.

Loosen 8-32 set screw in top cam.i.

Rotate cam clockwise (CW) until the switch ii.

makes contact (listen carefully for a slight

click). The valve will begin to rotate CCW.

By making small incremental CW move-

ments of the cam the valve can be posi-

tioned precisely in the desired position.

Securely tighten the setscrew.iii.

If valve traveled too far open:b.

Apply power to terminal connections #1 i.

and #3, the valve will begin to rotate CW,

allow it to travel to the mid position.

Follow directions in section a of “To set ii.

open position”.

To Set the Closed Position:

CAUTION: Valves with mechanical stops may be dam-

aged or cause damage to the actuator if allowed to

travel too far closed.

Operate valve to the closed position by applying 1.

power to terminal connections #1 and #3: the

valve will rotate CW viewing the top of the actuator.

NOTE: When the actuator is in the closed position

the setscrew securing the close cam to the shaft

will be accessible.

If valve did not close completely:a.

Loosen 8-32 set screw in bottom cam.i.

Rotate cam CCW until the switch makes ii.

contact (listen for a slight click). The valve

will begin to rotate CW. By making small

CCW incremental movements of the cam

the valve can be positioned precisely in the

closed position.

Securely tighten the setscrew.iii.

If the valve has traveled too far closed:b.

Apply power to terminal connection #1 and i.

#2: the valve will begin to rotate CCW. Al-

low to rotate to the mid position.

Follow directions in section a of “To Set ii.

Closed Position.”

-3-

76432

Optional

Brake

PSC Motor

Optional

Heater &

Thermostat

Ground

Screw

Capacitor

Lights for remote

position indication

DPDT control switch

shown for illustration only

A.C.

Power

Supply

Field Wiring

Switch Layout

Hot

SW. #1 Close Limit

SW. #2 Open Limit

SW #1

SW #2

Wiring diagram for standard

1PH/60Hz/AC electric

actuator illustrating optional

heater, thermostat and

brake.

1 2 3 4 5 6

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Marwin-valve ER Series Electric Actuators Manuel d'utilisateur Page 3

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