EB 8312-2 EN
5
Safety instructions and measures
1 Safety instructions and measures
Intended use
The SAMSON Type 3273 Hand-operated Actuator is mounted on a valve and is intended for
the following activities in combination with a pneumatic actuator, e.g. SAMSON Type 3271
or Type 3277 Actuator:
−
To manually move the valve to the closed or open position for maintenance or repair
work, e.g. to exchange the actuator.
−
To manually move the valve upon air supply failure
−
To keep the fail-safe action of the pneumatic actuator also during maintenance and re-
pair work on the actuator
−
Special version: to operate a mounted valve without pneumatic actuator
The side-mounted handwheel is not suitable to perform control tasks. The side-mounted
handwheel is designed to operate under exactly defined conditions (e.g. thrust, travel,
actuator area). Therefore, operators must ensure that the side-mounted handwheel is only
used in applications that meet the specifications used for sizing at the ordering stage. In case
operators intend to use the handwheel in other applications or conditions than specified,
contact SAMSON.
SAMSON does not assume any liability for damage resulting from the failure to use the de-
vice for its intended purpose or for damage caused by external forces or any other external
factors.
Î
Refer to the technical data and nameplate for limits and fields of application as well as
possible uses.
Reasonably foreseeable misuse
The handwheel is not suitable for the following applications:
−
To limit the valve travel
−
To control the flow rate through the mounted valve (on/off only)
−
Use outside the limits defined during sizing and in the technical data
Furthermore, the following activities do not comply with the intended use:
−
Use of non-original spare parts
−
Performing service and repair work not described in these instructions
