8) This describes the essential skills and knowledge and their level, required for this unit. Evidence shall show that knowledge has been acquired of safe working practices and diagnosing and rectifying faults in lifts systems. All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies. KS01-EG116A Traction lift systems Evidence shall show an understanding of the operation of the various types of lifts and the emergency procedures for the release of trapped passengers to an extent indicated by the following aspects: T1 Technical standards, regulations and codes for lifts and escalators encompassing: Lift Code Australian Standards relevant to lift systems T2 Lift systems – drive types, construction and operation of passenger, goods and service lifts encompassing: Drive types Drive constructions Drive operations Single and team manual handling Communication on site Emergency procedures Passenger Goods Service T3 Lift machine room encompassing: access Machine Controller Governor Floor selector T4 Lift well equipment encompassing: Guide rails Landing doors and locks Limit switches/operating devices Ropes Roping systems Counterweights T5 Lift pit encompassing: access Buffers Compensators Safety equipment T6 Lift car encompassing: access Frame Superstructure Door operator Travelling cable Buttons and indicators Communication devices Safety gear T7 Lift control circuits using relay logic encompassing: Button circuit Indicator/lantern circuit Key switch circuits Fans Mains supply Power circuits Floor selector circuitry Motor room control (selector) Well control (transducer) Directional circuitry Slowing and stopping circuitry Re-levelling circuitry Door operator circuitry Acceleration circuits T8 Lift safety circuits encompassing: Landing door locks Car door locks Emergency stop Pit switch Car trap-door limit switch Fire service Car top switch Tappet switch Governor/switch Safety gear switch Reverse phase relay Phase failure relay Overloads Circuit breakers Limit switches Terminal stopping Door protection Circuit switches T9 Lift components - electro-mechanical employing relay logic encompassing: Button circuit Indicator/lantern circuit Key switch circuits Fans Mains supply Power circuits Floor selector circuitry Motor room control (selector) Well control (transducer) Directional circuitry Slowing and stopping circuitry Re-levelling circuitry Door operator circuitry Acceleration circuits T10 Lift components - electro-mechanical safety circuits encompassing: Landing door locks Car door locks Emergency stop Pit switch Car trap-door limit switch Fire service Car top switch Tappet switch Safety gear switch Terminal stopping Circuit switches are all highlighted T11 Lift components - electronic encompassing: Encoders Transducers Electronic boards Selectors Rectifiers Capacitors Resistors Processor board I/O board T12 Lift components – electrical encompassing: Relays; reverse phase and phase failure Tachos Limit switches Brushes Selectors Motor/generator Transformers Fuses Lamps Terminals T13 Lift electrical layout and special requirements encompassing: Lift Code and AS 3000 requirements Special lift symbols Conduits Travelling cable Troughing Colour coding and labelling Segregation LV/ELV Communication cabling T14 Traction encompassing: Speed/load characteristics Efficiency Brakes Electric prime mover (motor types and control) T15 Geared types including rack and pinion and chain encompassing: Speed/load characteristics Efficiency Brakes Electric prime mover (motor types and control) Drum T16 Electric lifts – mechanics encompassing: Governors Governor types including; vertical shaft, overspeed devices, horizontal shaft Governor operation testing and rope tension testing Safety gear Types; A instantaneous, B flexible guide clamp, C wedge clamp and D oil buffer Release procedures for each type of safety gear/governor combination Statutory requirements T17 Maintenance, replacement and adjustment of mechanical lift components encompassing: Air cords Selectors Bearings; roller, sleeve, guide shoes, and slipper Door guides Landing doors Car doors Tapes/chains T18 Brake types, function, operation, inspection and adjustment, circuitry, manual release and statutory requirements encompassing: Geared machine brakes Gearless machine brakes Brake function and statutory requirements Internal and external mechanical brakes Electrical operations including; stall motor, solenoid and hydraulic inspection and adjustment of mechanical and electrical brakes Brake circuitry Manual release devices and safe procedures Statutory requirements T19 Electro-hydraulic lifts circuitry, controls and components encompassing: Electrical circuitry Pump motor, starter Governor switch Over travel limits Up, down solenoids Up, down limit switches Levelling switch Stop button Faulty components diagnosis Hydraulic components Hydraulic circuitry Servicing T20 Electro-hydraulic lifts - mechanical operation – fluid power principles and components, operation, arrangements, lift code and other requirements and emergency passenger release encompassing: Fluids Hydraulics Pascal’s Law Safety considerations of fluids under pressure Pump Control of hydraulic pressure Solenoid values Directional flow including pressure gauge Ram/cylinders, including single and multi stage Oil cooler Oil reservoir Filters Seals Bleeding lines General operation Types of arrangements including; side acting, direct and suspended Requirements of Lift Code/Standards including; viewing communication windows, labelling circuit breakers, head room/top of car, pump installation under car, anti-creep devices and closing of landing doors T21 Emergency release procedures - trapped passengers – OHS considerations and communication with passengers encompassing: Enterprise requirements and procedures Passenger safety Moving under power Hand winding Determining numbers and condition of passengers Direction of lift travel before stopping Fault indication Status of doors Warnings about using controls Warnings about standing near doors Information related to impending movement Information relating to opening of doors Reassurance as to safety of passengers Emergency medical support T22 Escalators and moving walks components encompassing: Machine Brakes Controller Safety devices Balustrade lighting Steps/pallets/belts Hand rail Drive chain Truss Track systems Step/pallet chains Rollers, Tension carriage Hand rail earthing |