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Provides basic protection against gross changes in structural seismic acceleration.
Used on cooling tower fans and other machinery for vibration protection.
Details factors influencing the switch's trip point.
Explains how spring force direction impacts tripping sensitivity.
Discusses how gravity affects the trip mechanism based on orientation.
Explains how external forces cause the trip plate to overcome other forces.
Provides critical warnings and guidance for installing the switches.
Discusses prioritizing mounting location for sensing over serviceability.
Explains the importance of aligning the sensitive axis with vibration.
Recommends horizontal mounting for better vibration response.
Discourages vertical mounting due to less vibration response.
Illustrates preferred and alternate mounting orientations for horizontal machines.
Details recommended and not recommended orientations for vertical machines.
Discusses switch rotation options and conduit orientation.
Emphasizes secure mounting to reflect actual machinery vibration.
Introduces wiring options and terminal assignments.
Details SPDT and DPDT wiring diagrams and safety notes.
Provides guidelines for conduit installation to prevent moisture ingress.
Discusses measures to prevent moisture from entering the switch.
Stresses the importance of tight covers for sealing.
Advises checking cable insulation for damage.
Recommends applying dielectric grease to prevent moisture entry.
Lists general safety rules like using as specified and grounding.
Defines warning terms and explains safety symbols used in the manual.
Verifies the factory setpoint by rotating the switch.
Guides on adjusting the setpoint while the switch is installed on the machine.
Details how to remotely reset the switch using electrical signals.
Describes the startup delay feature for high vibration during startup.
Explains how thermistors affect the startup delay duration.
Discusses coil hold strength and electrical characteristics.
Explains how coil hold strength affects startup delay performance.
Notes that startup delay duration is factory set and not alterable.
Details IECEx, ATEX, and UL certifications for Model 5550.
Details IECEx and ATEX certifications for Model 5550G.
General