OLGAS-H
– High pressure spring return hydraulic actuator
Use and maintenance manual
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Pag. 21
Contents may change without notice
3.2 RESIDUAL RISKS
The actuator has parts under pressure.
Use the due caution.
Use individual protections provided for by the laws and
provisions in force.
3.3 OPERATIONS
( refer to specific document: operating diagram furnished )
3.3.1 Emergency manual operation
Picture 5
– Olgas with hydraulic manual hand-pump
The OLGAS-H actuators can have an emergency manual override in
addition to the local and/or remote control panel which controls the oil
supplied by a power pack for the
“normal” actuator operation.
The emergency manual override mounted on the actuator, consists
of an hydraulic manual override and a hydraulic manual selector to
choose the
actuator “Normal operation”, with oil supply from a power
pack, or the
“Emergency manual operation”. The compact hydraulic
manual override consists of :
- hand pump to deliver oil from the tank to the actuator cylinder to
control the actuator operation against the spring
- stop valve which allows the connection of the actuator cylinder to
the oil tank to control the actuator operation by spring
