| Typical design | A lifting platform or car is raised by a hydraulic system; the exact layout depends on travel height and building conditions. | A motor-driven traction system moves a car along guide rails; counterweight arrangements vary by design. | A vertically guided platform carries goods or wheeled loads between designated levels; enclosure and access arrangements vary. | Ask for the proposed drive system, general arrangement drawing, machine-room requirements, and installation interfaces. |
| Trolley access | Can be configured with platform dimensions and entrances suited to trolley loading, subject to the design and rated load. | Can be designed for trolley entry and level access; door and sill arrangements should be specified for the intended route. | Often configured for direct platform loading, but the degree of enclosure and access protection is project-specific. | Provide trolley dimensions, turning needs, wheel type, load distribution, and the approach direction at every landing. |
| Space and building interface | May suit some low- or medium-rise goods applications; pit, overhead, cylinder placement, and structural requirements depend on the model. | Requires space for the hoisting equipment and associated components; pit, overhead, and shaft dimensions vary. | May be considered where a guided platform arrangement fits the site, but it still requires suitable structural support and protected access. | Request a site-specific dimensional drawing and confirm pit depth, overhead clearance, shaft dimensions, and supporting structure. |
| Safety provisions to specify | Specify suitable landing-door interlocks, travel limits, overload protection, emergency stop, and any required emergency lowering provision. | Specify suitable landing-door interlocks, travel limits, overload protection, emergency stop, and required protection against unintended movement. | Specify guarded access, interlocked gates where required, travel limits, overload protection, and emergency stopping arrangements. | Request the safety-device list, circuit description, test procedures, and documentation showing compliance with the codes applicable to the installation. |
| Load and duty planning | Capacity, platform size, travel, and operating frequency must be engineered for the actual load and duty cycle. | Capacity, speed, travel, and operating frequency must be matched to the building and intended use. | Rated load and platform dimensions must account for the combined trolley and goods load, including how the load is positioned. | State the maximum combined load, use frequency, travel distance, number of stops, and loading pattern; do not select by trolley weight alone. |
| Customization options | Possible project options include platform size, entrance layout, controls, finishes, and loading-side arrangements. | Possible project options include car and door dimensions, entrance layout, controls, finishes, and landing arrangements. | Possible project options include platform dimensions, access gates, control locations, and protective enclosure arrangements. | Ask the supplier to mark standard features separately from optional items and confirm how each option affects the design and price. |
| Operational considerations | Hydraulic equipment requires maintenance appropriate to its system and installation; operating characteristics vary by design. | Maintenance needs depend on the traction equipment, controls, and operating conditions. | Maintenance needs depend on the drive, guide system, controls, and access protection provided. | Request the maintenance schedule, recommended inspections, spare-parts list, warranty terms, and local service arrangements. |
| Documents to request | Technical proposal, layout drawings, rated-load information, safety-device schedule, installation requirements, and operation and maintenance manuals. | Technical proposal, layout drawings, rated-load information, safety-device schedule, installation requirements, and operation and maintenance manuals. | Technical proposal, layout drawings, rated-load information, safety-device schedule, installation requirements, and operation and maintenance manuals. | Confirm the exact model and configuration offered, applicable standards, inspection requirements, delivery scope, and commissioning responsibilities. |