Safety Instructions And Measures - Samson 3273 Mounting And Operating Instructions

1 Safety instructions and measures

Intended use
The SAMSON Type 3273 Hand-operated Handwheel 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. while exchanging the actuator)
− To manually move the valve upon air supply failure
− To hold the valve in the fail-safe position while performing maintenance and repair work
on the pneumatic actuator
− Special version: to operate a mounted valve without pneumatic actuator
The side-mounted handwheel in combination with a pneumatic actuator is not suitable to
perform control tasks. The side-mounted handwheel is designed to operate under exactly de-
fined conditions (e.g. thrust, travel, actuator area). Therefore, operators must ensure that the
side-mounted handwheel is only used in operating conditions 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:
− Limiting the valve travel
− Controlling the flow rate through the valve (except for the special version without pneu-
matic actuator)
− Use outside the limits defined during sizing and by 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
EB 8312-2 EN
Safety instructions and measures
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