Safety Instructions And Measures - Samson 4747 Mounting And Operating Instructions

Safety instructions and measures

1 Safety instructions and measures
Intended use
The SAMSON Type 4747 Limit Switch issues an electric signal when the valve travel exceeds
or falls below an adjusted limit. The signal is suitable for switching control signals, issuing vi-
sual and audible alarms or for connection to central control or alarm systems. The device is
designed to operate under exactly defined conditions (e.g. temperature). Therefore, opera-
tors must ensure that the limit switch is only used in applications where the operating condi-
tions correspond to the technical data. In case operators intend to use the limit switch in ap-
plications or conditions other than those 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 for limits and fields of application as well as possible uses.
Reasonably foreseeable misuse
The Type 4747 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 is referred to as individuals who are
able to judge the work they are assigned to and recognize possible dangers due to their spe-
cialized training, their knowledge and experience as well as their knowledge of the applica-
ble standards.
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.
EB 4747 EN 5