Install Instructions

ManualsBrandsAsco RedHat ManualsHydramotorsStandard Watertight Fast Opening Hydramotor Actuator, Damper Shaft & Arm (110/120V)

Field Service Notice

Field service replacement kits are limited to the following:

1. Auxiliary Switch Replacement Kit 296804

2. Proof of Closure Switch Replacement Kit 296806

3. Travel Limit Switch Replacement Kit 296807

4. Gasket and Screw Replacement Kit 296808

Kit contains:

• Front cover gasket and screws

• Window o-ring and screws

• Mounting gasket and set screws

5. Low Fire Switch Replacement Kit 425981

To order, specify the kit or part number, as well as the actuator

model number.

Auxiliary Switch Replacement(Refer to Figure 7)

Note: The Auxiliary switch is not a safety switch.

1. Before removing the cover, review WARNING statements on

page 1. Remove the front cover (with nameplate) and set aside.

Take care not to damage the cover gasket if supplied or sealing

surfaces. A diagram is located on the inside of the cover to aid in

making electrical connections.

2. Disconnect auxiliary switch wiring.

3. Remove two mounting screws and the auxiliary switch.

4. Install new auxiliary switch in the actuator making sure that the

fork of the switch actuation lever engages the indicator arm as

shown in Figure 7.

5. Torque mounting screws 20 to 25 in-lbs (2.3 to 2.8 Nm).

6. Reconnect switch wiring and torque terminal screws 8 to

12 in-lbs (0.9 to 1.3 Nm).

7. See instructions on page 3 for auxiliary switch adjustment,

starting at Step 2.

Adjust this

screw

using 7/64”

Allen key.

Figure 6. Low Fire Switch Adjustment

Travel Limit Switch Replacement(Refer to Figure 8)

1. Before removing the cover, review WARNING statements on

page 1. Remove the front cover (with nameplate) and set aside. Take

care not to damage the cover gasket if supplied or sealing surfaces.

A diagram is located on the inside of the cover to aid in making

electrical connections.

2. Remove the two mounting screws.

3. Disconnect wiring from the travel limit switch taking care not to

strain the wire connection at the terminal.

4. Install new travel limit switch. Torque mounting screws 20 to 25 in-

lbs (2.3 to 2.8 Nm). Travel limit switches are set at the factory. DO

NOT adjust.

5. Plug terminal connections to travel limit switch.

6. Install the cover. Be certain that the gasket (if applicable) and sealing

surfaces are clean and without damage. Snug down all screws before

tightening. Torque screws 20 to 25 in-lbs (2.3 to 2.8 Nm) evenly

using a crisscross pattern starting at the middle.

7. Operate actuator (with valve) through ﬁ ve cycles to verify proper

operation prior to use.

Do not adjust

this screw.

Figure 8. Limit Switch

4. Cycle the actuator several times to verify the switch setting and

readjust as required.

5. Install the cover. Be certain that the gasket (if applicable) and

sealing surfaces are clean and without damage. Snug down all

screws before tightening. Torque screws 20 to 25 in-lbs (2.3 to 2.8

Nm) evenly using a crisscross pattern starting in the middle.

MAINTENANCE

Before inspection, maintenance or rebuild, review WARNING

statements on page 1. Maintenance should

include annual inspection

and cleaning. Use a mild cleaning ﬂ uid, not aggressive solvents to remove

dirt and oil. Organize a maintenance schedule based on environment and

frequency of use. Check for loose electrical and mechanical connections

and replace damaged parts. Do not remove the top cover for maintenance.

There are no serviceable parts contained inside the actuator housing.

Proof of Closure Switch Replacement(Refer to Figure 7)

Same as auxiliary switch replacement except switch must NOT be

adjusted.

Low Fire Switch Replacement(Refer to Figure 7)

Same as auxiliary switch replacement. Make a note of terminal connections

before disassembly. Ensure terminals are replaced in the same positions.

Gasket replacement

The gaskets have an adhesive attachment. Use a nonmarring tool to peel

off the old gasket. Remove backing from new gasket and stick on in the

same location as the old gasket.

Page 4 of 4

Fork must engage

arm as shown.

Figure 7. Auxiliary, Proof of Closure and Low

I&M No. V 9611 R5