Manual HD EN
0910e
Modifications reserved. Date 03.2017.
No guarantee for accuracy.
Older data sheets are invalid.
In the event that you notice some issues, the table below can help identifying problems and, where possible, solve them.
PROBLEM
CAUSE
REMEDY
Wrong rotation
Irregular supply
Check the system and ensure that the supply pressure is correct
Lubricant missing
Disassemble, lubricate and reassemble
Worn components
Disassemble, check the worn components and, if necessary, replace them
Faulty valve
Check the valve documentation and contact the manufacturer
Control instrumentation
Check the instrumentation documentation and contact the manufacturer
Not complete rotation
Wrong adjustment of the actuator stroke
Check the stop positions and, if necessary, repeat the adjustment
Altered lubricant
Remove and replace the altered lubricant with a new one
Extraneous parts within the actuator or leftover of the
maintenance
Disassemble, remove the extraneous parts and reassemble
Faulty valve
Check the valve documentation and contact the manufacturer
No torque output
Irregular supply
Check the system and ensure that the supply pressure is correct
Supply pipe blocked, compressed or with sealing
problems
Check all piping and fi ttings, remove any extraneous material or damaged
components
Power module piston sealing problems
Remove the Power Module (Air/Oil) and check the gasket, clean and reassemb-
le; in case of defects, replace the gaskets
Valve torque too high
Check the documentation and mounting of the actuator/valve
Air exhaust hole blocked
Remove caps or extraneous objects from the exhaust hole
11)
LIFTING AND HANDLING
It is recommended that the lifting and handling of the actuator must be done by qualifi ed personnel and in accordance with the laws and regulations in force. Lift the actuators only with
proper, adequate and allowed systems in relation to the actuator weight. The weight of the actuators is indicated on the Air Torque catalogue and in the related technical data-sheets.
During the lifting and the handling of the actuators, it is recommended to avoid clashes and/or accidental falls in order to avoid irreparable damages to the actuators and to compromise
the functionality.
Important!
The Actuator lifting rings placed on the Power and Spring Modules, are designed for the lifting of the actuator only and not of the actuator plus the valve.
12)
ACTUATOR INSPECTIONS (TO BE CARRIED OUT ON ACTUATOR ARRIVAL)
•
If the actuator is shipped already assembled onto the valve, the setting of the actuator and control system (if available) should have been already performed by the valve
manufacturer or automation center.
•
If the actuator is shipped separately, the setting of the actuator and control system must be performed, while assembling the actuator on top of the valve.
•
A visual inspection is recommended to detect any damage that actuator may have been subjected during transportation. If necessary, repair all damages to the top-coating.
•
Check that the model, the serial number of the actuator and the performance data marked on the data- plate are in accordance with the order acknowledgement, test certifi cate
and delivery note.
•
Check that the fi tted accessories (if available) comply with those listed in the order acknowledgement and the delivery note.
13) STORAGE
INSTRUCTIONS
If the actuator is not intended for immediate use/installation,
the following precautions must be taken:
•
Store the actuator in a clean and dry place
at a temperature not lower than –20°C (-4°F)
and not more than +40°C (+104°F).
•
Keep the actuator in its original packaging.
•
Do not remove the plastic caps from the
air
connections.
•
Store the relevant technical documentation
and this document.
14)
ACTUATOR ASSEMBLY AND PART LIST
HEAVY-DUTY
Scotch-Yoke Pneumatic Actuators
MANUAL
