Enhancing Interpretability of Data-Driven Fault Detection and Diagnosis Methodology with Maintainability Rules in Smart Building Management

Table 18

Elevators & Escalators – General.

Problem	Design	Construction	Maintenance
Compromised/poor condition of elevator machine room; Leaking ceiling of the machine room; Good practice: Installing a cooling system in the machine room to prevent excessive heat in equipment	Adopt the local codes, and consider elevator system performance in accordance with SS 550, CIBSE Guide D, BS 5655-6, BS 5655-11, BS EN 81-20 or equivalent.; Provide ease of access to the elevator machine room with outward opening door (minimum clear opening of 0.6 m ×1.8 m) and permanent safe access for personnel and heavy equipment.; Equip machine room with electric lighting with a minimum illuminance of 200 Lux at floor level. Also provide switched socket-outlets in accordance with BS 5655-6, BS 5655-11, BS EN 81-20, SS 550 or equivalent. Provide good ventilation to the machine room (natural or mechanical). For natural ventilation, a 20% opening of the floor area is recommended to achieve cross-flow.	Consider provision for mechanical ventilation when the ambient temperature of the room exceeds 32°C in accordance with BS 5655-6, BS 5655-11, BS EN 81-20, SS 550 or equivalent.; Properly commission elevator prior to operation in accordance with BS EN 81-20 or equivalent. Lift machine and drive should be securely mounted. All movable parts, the gear box, and joints should be sufficiently lubricated [16].	Regular inspection of room condition and practice proper housekeeping should be carried out. The room should not be used as storage; remove all non-elevator related materials from the machine room. Adequate lighting should be provided in the elevator machine room to allow workers to conduct maintenance works safely and efficiently [17].; Machine room should be ventilated to ensure the temperature difference measured at any point within; 1000 mm of machinery and associated equipment does not exceed 38°C in accordance with BS 5655-6, BS 5655-11, BS 7255, BS EN 13015, SS 550 or equivalent.
Poorly-maintained elevator pit; Leaking elevator pit	Ensure proper waterproofing design of elevator pit in accordance with BS 5655-6, BS 5655-11, BS EN 81-20, SS 550 or equivalent.; Specify corrosion resistant material and components in elevator system to minimise damage by presence of water or excessive moisture.	Test waterproofing of elevator pit before installation of elevator equipment in accordance with BS 5655-6, BS 5655-11, BS EN 8120, SS 550 or equivalent.; Avoid any damage to waterproofing membrane during elevator installation.	The pit areas should always remain dry. If there is any presence of water, the source of water should be identified and eliminated.; Routine inspection of the elevator pit should be carried out for water seepage due to faulty waterproofing membrane.
Lift lobbies with poor accessibility for the disabled; Good practice: Design a wheelchair accessible lift lobby (photo shows an example from a residential building)	Encourage through or two-end entries for lift lobbies; or provide added space for dead-end lobbies to ensure the better distribution of waiting passengers in accordance with BS 5655-6, BS 5655-11, BS EN 81-20, SS 550 or equivalent.; Provide rain covers for lift lobbies in residential buildings for protection from torrential rains.	Construct lift lobby pedestrian flooring in accordance with recommended minimum pendulum ratings specified in SS 485, HB 197, AS/NZS 4663 or equivalent.	Practice proper housekeeping to keep the lift lobbies clean and clear of dirt and avoid any obstruction or stacking to accommodate easy egress and ingress.; Carry out routine inspection of lift call buttons and indicator displays; check that they are in acceptable working condition.