Install Instructions

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

I&M No. V 9611 R5

Installation & Maintenance Instructions

HYDRAMOTOR® PUSH-TYPE LINEAR ACTUATOR

WITH USER SETTABLE LOW FIRE SETTING AND

GENERAL PURPOSE OR WATERTIGHT ENCLOSURE

To prevent the possibility of death, serious injury or property

damage, the Hydramotor® Actuator must be installed and

serviced only by a qualiﬁ ed service technician avoiding the

following hazards:

• Electrical hazard. Turn off all electrical power to

Hydramotor® Actuator.

• Risk of electric shock – More than one disconnect switch

may be required to de-energize the device for servicing.

• Pressure hazard. Depressurize valve and vent hazardous

or combustible ﬂ uid to a safe area before inspection or

removal of the actuator or valve from service.

• Explosion, ﬁ re or toxic gas hazards. Extinguish all open

ﬂ ames and avoid any type of sparking or ignition during

leakage testing.

SERIES

AH4E

Speciﬁ cations

Force Output: 250 lbs

Stroke: 1 1/8” maximum

Electrical Characteristics:

AH4E actuator assembly

Nameplate/electrical

cover

Conduit

knockouts

Cover screw

Valve assembly

Valve stem position indicator

Damper arm

(optional)

Mounting set screw

Figure 1. AH4E Actuator and V710 Valve Assembly

Service Notices

See separate V710 Gas Valve Installation and Maintenance Instructions

for information on: Operation, Positioning, Mounting, Piping, Strainer

or Filter Requirements, Flow Controls, Preventive Maintenance, and

Cause of Improper Operation.

Do not install an actuator with General Purpose Enclosure in a location

subject to weather, wash down, or other sources for water ingress. Use

AH actuators with watertight enclosure for these locations.

DESCRIPTION

AH4E Hydramotors are self-contained linear, push-type actuators which

extend when powered and retract by spring force upon power interruption.

The AH actuator is typically used for control of gas-ﬁ red heating

equipment, commonly to open and close a valve or both a valve and

damper. AH4E actuators position V710 Series gas valve assemblies.

OPERATION

Application of electrical power simultaneously drives an electric pump

and closes a normally-open dump valve and control valve, resulting in up

to 250 pounds of force on the actuator stem. This extends the actuator stem

and attached valve poppet, to open the valve and/or damper.

On reaching the low ﬁ re setpoint, a low ﬁ re switch interrupts power to

the motor while maintaining power to the dump and control valves, thus

stabilizing hydraulic pressure to hold shaft position.

Closing the external high ﬁ re switch causes the actuator to extend beyond

the low ﬁ re point.

Upon reaching the fully extended position, a travel limit switch interrupts

power to the electric motor while maintaining power to the dump valve and

control valves, thus stabilizing hydraulic pressure to hold shaft position.

Opening the high ﬁ re switch de-energizes the control valve allowing the gas

valve to return smoothly to the low ﬁ re position.

Position indicators on both sides of the actuator show the actual position of

the valve stem.

Upon power interruption, the dump valve opens releasing hydraulic

pressure, and allowing the return spring to retract the stem and close the

valve fully. Closing time is one second or less.

ACTUATOR / VALVE COMPATIBILITY

The AH4E series actuator is designed for use only with ASCO V710

valves having V15 or V25 sufﬁ x in catalog number.

OPTIONAL FEATURES

• Damper Shaft Arm Is factory-mounted on RH side. The arm is ﬁ eld-

adjustable to 8 positions and can be switched to the LH side.

» Damper Arm Rating: Drives damper in one direction only. 20

lb maximum at 2.85 in. radius at 20°F to 150°F (-7°C to 65°C )

and 10 lb maximum at -40°F to 20°F (-40°C to -7°C). Damper

spring and linkage must provide sufﬁ cient return force.

» Damper Arm Travel: 2”

• Auxiliary Switch One integral SPDT switch, ﬁ eld adjustable to actuate

atany position of stroke. This is not a safety switch.

• Overtravel Proof-of-Closure Switch A single factory set non-ﬁ eld

adjustable SPDT switch to be used in conjunction withV710 Series

Gas Valves with overtravel seal (V25 sufﬁ x in catalog number).

*Current increases by 20% for 50Hz operation.

WARNING

ASCO Valves®

E226360 - 5/12

I&M No. V 9611 R5

Operating Voltage /

Frequency

Current, in Amperes

Inrush

Opening Holding

120/60 3.6 2.2 0.18

240/60 1.9 1.2 0.09

Summary of content (4 pages)

PAGE 1
I&M No. V 9611 R5 Installation & Maintenance Instructions SERIES HYDRAMOTOR® PUSH-TYPE LINEAR ACTUATOR WITH USER SETTABLE LOW FIRE SETTING AND GENERAL PURPOSE OR WATERTIGHT ENCLOSURE Opening the high fire switch de-energizes the control valve allowing the gas valve to return smoothly to the low fire position.
PAGE 2
Fast Opening: Slow Opening: Opening Time: 14 seconds max. 26 seconds max. Note: • • • Opening time doubles below -30°F (-34°C). 50Hz operation increases opening time by 20%. Opening time is not field adjustable. Wiring (Refer to Figure 2) WARNING: Electrical hazard. To prevent the possibility of death, serious injury or property damage, open all circuits before inspection, service or disassembly.
PAGE 3
6. 7. 8. 9. If a proof of closure or auxiliary switch is being used make those electrical connections. Use the markings located on the insulators to determine normally open and normally closed terminals. Torque electrical connection screws 8 to 12 in-lbs (0.9 to 1.3 Nm). Refer to auxiliary switch adjustment section on page 3 for instructions on adjusting switch. Proof of closure switches are set at the factory. Do not adjust proof of closure switches. Proof-of-Closure Switch Assembly Factory set.
PAGE 4
. Cycle the actuator several times to verify the switch setting and readjust as required. 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. 5. Proof of Closure Switch Replacement(Refer to Figure 7) Same as auxiliary switch replacement except switch must NOT be adjusted.