Car Top Inspection — TOCI Box for Compliant Elevator Safety Testing
The TOCI Box — Temporary Override of Car Top Inspection — is a specialist elevator safety device used to temporarily and selectively override specific car top inspection safety functions during particular testing, commissioning, and fault-finding procedures that require the elevator to be driven at normal or inspection speed in configurations that would otherwise be prevented by the active inspection safety circuit. Designed for use by authorised, trained elevator engineers during defined maintenance and commissioning scenarios, the TOCI Box is an essential tool for compliant elevator safety testing in installations governed by EN 81-20 and related international standards.
The need for a TOCI Box arises from a specific tension inherent in modern elevator safety standards: the very safety protections that make car top inspection safe for technicians — circuit interruptions, speed limitations, and movement restrictions — can also prevent the completion of certain mandatory safety tests and commissioning checks that require the elevator to behave in a controlled but otherwise restricted manner. The TOCI Box provides the mechanism through which these tests can be conducted safely, under controlled conditions, by authorised personnel, without permanently compromising the safety circuit.
Use of the TOCI Box is strictly governed by the elevator safety standard. It may only be activated by a trained, authorised elevator engineer who understands the specific test being conducted, the safety implications of the override, and the precautions required to ensure that all personnel in and around the elevator are protected during the override period. The device incorporates features that ensure its use is deliberate, controlled, and time-limited — it cannot be left permanently engaged or accidentally activated by untrained personnel.
The TOCI Box is designed for direct integration with the elevator's safety circuit and control system, with wiring and connection arrangements compatible with standard elevator control panel and car top wiring configurations. Its robust housing is engineered for the elevator shaft and car top environment, providing reliable electrical performance in the dust, moisture, and vibration conditions characteristic of lift shaft installations.
For elevator commissioning engineers, lift safety inspectors, and maintenance providers who need a correctly specified TOCI device for compliant EN 81-20 safety testing procedures, the TOCI Box delivers the precise functionality, circuit compatibility, and engineering quality that authorised override of car top inspection demands.
Key Features
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