This instruction can guide the customers to store, install, operate and maintain the Hawks series pneumatic actuators and pneumatic valves.

This manual is applicable for the actuator with the solenoid valve, and the running condition of the actuator has been adjusted. For the manual of the actuator with valve, please look up http://www.cn-hawks.com. And this manual is also applicable for the air pressure and other fluids.

Note: If disobey the following specification, it will be dangerous to the operator, and the manufacture will not be responsible for this issue.

The design of the Hawks pneumatic actuator is connecting with a pilot solenoid valve, and then installing into the equipment control system; the pilot air source pressure should not be higher than 110% of the rated pressure of the pneumatic actuator, the temperature should be lower than 80°; the type of the actuator is the spring return (spring open, spring close) or double action; according to the equipment control signal, the operating angle of the valve is inside the 90°; if you need larger operating angle, please contact us; the compressed air which is treated by the 40µm filter should be dry and clean; the actuator is correctly installed onto the valve with the locating device at the its housing bottom. A set of the optional limit switch transfers the valve position to the equipment control system.

A: Input the compressed air from the A, the left and right plungers move reversely, the output pinion rotates counter-clockwise, and the air at the sides of the both plungers exhausts from B.
B: Input the compressed air from the B, the left and right plungers move to the center, the output pinion rotates clockwise, and the air between the two plungers exhausts from A.
C: Input the compressed air from the A, the left and right plungers move reversely, the output pinion rotates counter-clockwise, and the air at the sides of the both plungers exhausts from B.
D: When it is out of air or power, the two plungers move to the center under the spring action, the output pinion rotates clockwise, and the air exhausts from A.

1. Acting Procedure of Double Action Pneumatic Actuator
Install the quick joint with the air vent of the air-compressor, and connect the quick joint with the air intake of the solenoid valve; the R1 or R2 of the solenoid valve is connected with the exhaust gas silencer joint, the gas can exhausts into the atmosphere directly; the
A and B air intakes of the solenoid valve should connect with the A and B air intakes of the actuator separately. When the air enters into the pneumatic actuator from A, the air pushes the plungers to the actuator end directions, the pinion rotates counter-clockwise, the valve rotates 90° counter-clockwise, and simultaneously, the air exhausts from B to R1 and R2, and then into the atmosphere; the valve is retained at this position until the A air source is stopped, and the atmosphere enters the actuator from A and causes the pinion and valve rotates clockwise. When the atmosphere enters into the actuator from B, the atmosphere pushes the plungers to the center, the pinion rotates clockwise, the valve rotates 90° clockwise, and simultaneously, the air exhausts from A to R1 and R2, and then into the atmosphere; the valve is retained at this position until the B air source is stopped, and the atmosphere enters the actuator from A and causes the pinion and valve rotates clockwise.

2. Acting Procedure of Spring Return (Single Action) Actuator
Install the quick joint with the air vent of the air-compressor, and connect the quick joint with the air intake of the solenoid valve; the R of the solenoid valve is connected with the exhaust gas silencer joint, the gas can exhausts into the atmosphere directly; the A intake of the solenoid valve should connect with the A intake of the actuator. When the air enters into the pneumatic actuator from A, the air pushes the plungers to the actuator end directions, the springs are compressed, the pinion rotates counter-clockwise, the valve rotates 90° counter-clockwise, and simultaneously, the air exhausts from B to R, and then into the atmosphere; the valve is retained at this position until the A air source is stopped, the spring return force pushes the plunger to the center, and causes the pinion and valve rotates clockwise.

3. Not Use Hawks Series Actuators under Following Conditions
A. According to the standards, there is no essential protection for the electric devices (solenoid valve, limit switch, etc.) of the pneumatic actuator.
B. Operate the actuator in the external environment.
C. Operate the actuator inside the > 100bar compressed air.
D. Install the pneumatic actuator in the adverse conditions without the manufacture’s agreement.
E. Install the actuator in the condition, >80° or <-20°.

1. General Safety Information
When the safety requirements of the actuator and the actuator connecting devices are similar, it is suitable; this instruction just gives the observing suggestion.

2. User Guide
The following items are not the manufacture’s responsibility, so the user should pay high attention:
The actuator should work within the rated compressed air pressure.
The actuator protection devices (such as the signaling device) and the electric devices should be at the active state.
Operate and maintain the actuator, when the professional air-source piping system equipments are installed.

3. Extreme Danger
Danger: Don’t put the hands inside the mechanical components of the limit switch which is in the upper of the actuator. During the usual operation, the protection devices can not be disassembled. If the maintenance and repair is required, the pressure loading and holding of the compressed air can be stopped.

4. If the installation is trouble-free, please do not remove the protective packing material of the valve or the actuator, and also pay attention to:
When the valve and the actuator are in the condition of dirtiness, chips or humidity, the essential protection measures should be adopted simultaneously. If disassemble the actuator from the valve, or fix the actuator on the lifting device with the lifting measures, the unpacked valve and actuator should not be piled up together . The actuator with the valve should be put at the designated position, and do not operate the actuator.

5. Connect with the Equipment Controller
Check and Inspect before the installation, to assure the red arrowhead on the top cover of the actuator showing the right position of the valve (butterfly valve or ball valve. The indicator is decussate with the pipe shaft: the valve is closed.

6. Connection of Limit Switch or Locator (Optional Item)
This component can be installed on the top of the housing of the actuator, and the connection should be according with the international general NAMUR standard.

7. Checking List
After the installation, check if the compressed air pressure of each valve and actuator is enough or not, and assure the compressed air pressure is larger than the lowest requirement of the pressure to rotate the valve.

8. Function and Position
Check the actual positions of the actuator and the valve: at the closed position of the valve, the notch at the top of the actuator shaft is decussate with the pipe shaft. Check if the torque of the valve or actuator is enough or not; during the function checking, the bolt connection of the valve and its components with the actuator should be fastened completely. If necessary, fasten the blots. Compare the opening and closing signals when the signals of the limit switch (optional) passing the valve or actuator indicators, the signals should be equal. If they are not equal, please check and correct.

9. After the Correct Checking, Control the Valve with Equipment Control System
For the technical parameter of the actuator, please refer to the Product Catalog.

10. Maintenance
Hawks series pneumatic actuator is maintenance free during the daily operation, but it needs checking and inspection periodically. Check if the bolt between the valve & its components and actuator is fastened tightly or not; if necessary, fasten the blots. There should be no compressed air leakage at each actuator unit; if necessary, fasten the blots.

11. Troubleshooting

1. Butterfly Valve Installation
Before installation, rotate the hand lever or hand wheel to check if the valve can rotate correctly or not.
Before installation, ensure there is no obstacle or sludge inside the valve, clean the gasket with the wet cloth to ensure the cleanness and un-obstruction of the valve inside. Align the holes of the ring flange, the gasket and the valve. Mount the gasket between the valve and the ring flange; drill the screws through the mounting holes, and fasten them with the nuts and the spring washers.

2. Flanged Ball Valve Installation
Before installation, rotate the hand lever or hand wheel to check if the valve can rotate correctly or not.
Before installation, confirm there is no obstacle or sludge inside the valve, ensure the cleanness and un-obstruction of the valve inside. Align the holes of the ring flange, the gasket and the valve. Mount the gasket between the valve and the ring flange; drill the screws through the mounting holes, and fasten them with the nuts and the spring washers.

3. Thread Ball Valve Installation
Before installation, rotate the hand lever or hand wheel to check if the valve can rotate correctly or not.
Before installation, confirm there is no obstacle or sludge inside the valve, ensure the cleanness and un-obstruction of the valve inside. Check the thread marks on the valves: G thread, BSPT thread, Rc thread, NPT thread. Process the external thread of the pipe according to the thread type on the valve; wrap the processed pipe with the thread seal belt, then twist the pipe into the valve screw.

4. Welded Ball Valve Installation
Before installation, rotate the hand lever or hand wheel to check if the valve can rotate correctly or not.
Before installation, confirm there is no obstacle or sludge inside the valve, ensure the cleanness and un-obstruction of the valve inside. Align the pipe with the corresponding valve, assure the alignment of the external-surfaces of the pipe and the valve, and then weld them.

5. UPVC Ball Valve Installation
Before installation, rotate the hand lever or hand wheel to check if the valve can rotate correctly or not.
Before installation, confirm there is no obstacle or sludge inside the valve, ensure the cleanness and un-obstruction of the valve inside. Ensure the inserting length of the pipe into the valve; apply the UPVC glue evenly onto the external-surface of the pipe and the internal-surface of the valve. Insert the pipe into the valve to the end; then rotate the pipe about 10º along the internal-surface of the valve , to infiltrate the glue completely.