Case Study:
Machine Overhaul and Divertor Pulleys - Sheerness, Kent
Location: Sheerness, Kent
Introduction
Omni Lifts, a reputable lift repair subcontractor company based in the UK, was tasked with carrying out a comprehensive machine overhaul and divertor pulley replacement for a Sassi machine located in Sheerness, Kent.
Project Overview:
The project aimed to refurbish and upgrade the lifts gearbox and sheave. The specific tasks undertaken by Omni Lifts are detailed below.
- Out of Service Notices:
- Omni Lifts initiated the project by posting out-of-service notices on all floors served by the lift to ensure the safety of building occupants.
- Lift Positioning:
- The lift was positioned at a suitable working height to facilitate easy access for maintenance and repairs.
- Counterweight and Lift Car:
- Omni Lifts propped the counterweight and safely accessed the lift car for necessary work.
- Isolation and Lockout:
- To guarantee the safety of the maintenance team, the lift was isolated, locked out, and tagged out, preventing unintended activation.
- Diverter Sheave Replacement:
- The existing worn diverter sheave was carefully removed and lowered to the machine room floor.
- Installation of New Diverter Sheave:
- A new divertor sheave was supplied and fitted, ensuring correct alignment to enhance lift performance.
7. Gearbox Maintenance:
- The lift gearbox oil was drained, and the upper half of the worm wheel gearbox was removed for inspection and cleaning.
- Existing oil was cleaned and flushed from the system.
- Gearbox bearings were inspected and found to be in satisfactory condition.
- Machine backlash and end float were checked and deemed acceptable.
- Gasket seals on gearbox entry covers, inspection covers, and the gearbox housing were replaced to prevent leaks.
8. Reassembly and Alignment:
- The lift machine was reassembled, and meticulous alignment of the brake and motor was carried out.
9. Gearbox Oil Replacement:
- Fresh gearbox oil was introduced as per the manufacturer's specifications and filled to the correct level.
- the machinery was refitted to ensure safety and compliance.
10. Slip Ring Bearings and A Frame Bearing Maintenance:
- Omni Lifts performed maintenance on slip ring bearings on the lift motor, resealing them and replenishing with new oil.
- The A Frame bearing also had its oil replaced with new oil to ensure optimal performance.
11. Testing:
- Power was reinstated to the lift, and comprehensive test operations were conducted, including brake and traction tests and appropriate SAFed tests.
12. Cleanup and Waste Disposal:
- The lift machine, machine bed, and machine room floor were thoroughly cleaned to remove oil and contaminants. All waste materials were disposed of through appropriate waste streams.
13. Returning to Service:
- After successfully completing all maintenance and testing procedures, Omni Lifts returned the lift to service and removed all out-of-service notices.
Conclusion:
Omni Lifts demonstrated their expertise in complex lift repairs by executing a meticulous machine overhaul and divertor pulley replacement. The project was completed with a strong emphasis on safety, precision, and adherence to manufacturer specifications, ensuring the lifts reliability and compliance with industry standards. The successful project execution reflects Omni Lifts' commitment and reputation to delivering high-quality lift repairs to its clients across the UK.
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