Samson EB 3773 Series, Mounting And Operating Instructions

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EB 3773 EN 1-1
Safety instructions and measures
1 Safety instructions and measures
Intended use
The SAMSON Type 3773 Limit Switch is mounted on pneumatic rotary actuators according
to VDI/VDE 3845. It issues an electric signal when the valve travel exceeds or falls below an
adjusted limit. The signal is suitable for switching control signals, issuing visual and audible
alarms or for connection to central control or alarm systems. The device is designed to oper-
ate under exactly defined conditions (e.g. temperature). Therefore, operators must ensure that
the limit switch is only used in applications where the operating conditions correspond to the
technical data. In case operators intend to use the limit switch in other applications or condi-
tions 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.
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Refer to the technical data for limits and fields of application as well as possible uses.
Reasonably foreseeable misuse
The Type 3773 Limit Switch is not suitable for the following applications:
− 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 maintenance activities not described in these instructions
Qualifications of operating personnel
The limit switch must be mounted, started up and serviced by fully trained and qualified per -
sonnel only; the accepted industry codes and practices must be observed. According to these
mounting and operating instructions, trained personnel refers to individuals who are able to
judge the work they are assigned to and recognize possible hazards due to their specialized
training, their knowledge and experience as well as their knowledge of the applicable stan-
dards.
Explosion-protected versions of this device must be operated only by personnel who has un-
dergone special training or instructions or who is authorized to work on explosion-protected
devices in hazardous areas.