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The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included. |
Functions and types of chiming system | Functions and types of chiming system may include: chiming clocks of various movement design (e.g. count wheel or locking plate, rack or combinations of control systems) long case and mantle clocks motive force (e.g. mainsprings or weights) gear trains (e.g. components of each train) chime release mechanism (e.g. control functions - chime and strike) chime and strike fans (e.g. control speed of trains) hand setting and synchronisation with chimes and strike winding systems in chiming clocks night shut-off switch types chime correcting mechanisms types of chimes by hammers and sequences for tunes (e.g. 4 or 8 hammer) tunes played (e.g. Westminster, St. Michaels and Whittington) chiming media (e.g. gongs, tubes and bells) |
Record and document repair process | Record and document repair process may include: date and extent of repair cost of replacement parts time spent on procedure |
Design and operation of chiming corrector mechanism | Design and operation of chiming corrector mechanism may include: double detent spring loaded catch rocking locking plate bell crank pivoted detent |
Inspect condition | Inspect condition may include: originality of components corrosion cleanliness wear hand setting tension function and safety of winding mechanism gear train end shake/backlash/lubrication mainspring engagement/hooking/tension/ lubrication adjustment of chime and striking functions verification of chime corrector functions synchronised chime release with operations of hands at the four quarters amount of warning for chime train strike release mechanism operation sound of chimes and strike monitored gong rods, bells, tubes alignment and security including attachment to case hammer head inserts (e.g. condition - worn or aged) |
Chime components | Chime components may include: four quarter cam lifter chime flirt or detents strike flirt or detent chime locking plate chime corrector chime gear train (e.g. warning wheel) ratio wheel (e.g. transmission) chime pin barrel gong rods, bells and tubes hammers |
Faults in chime components | Faults in chime components may include: mounting security (e.g. gong rods, bells and tubes) warning and locking pin security and detent mountings hammer condition worn arbors and bearings broken or worn chime components |
Correct set-up | Correct set-up may include: synchronised chime release with hands amount of warning chime corrector operation correct tune sequence sounds of chime |
Hand tools and equipment | Hand tools and equipment may include: clock repairers' hand tools (e.g. tweezers, screwdrivers and eyeglasses) universal shifter, sockets and spanners pliers, end cutters, files and levers movement holders, stands and wall brackets stakes for supporting removal/replacement of components (e.g. gathering pallet, cannon pinions and chime locking plate) lathe for pivot and arbor repairs and finishing clock bushing tool and replacement bushes lubrication (e.g. oiler, oil pots and greases) hand cleaning (e.g. pith, peg wood and rodico solvents jar) |
Appropriate working environment | Appropriate working environment may include: clean bench and working area adequate lighting and ventilation tools and equipment organised and in good condition ergonomic seating, including bench height |
Clean and safe work environment | Clean and safe work environment may be specified through: relevant legislation and regulations enterprise operating procedures 5S housekeeping related principles and procedures (e.g. sort, straighten, shine, standardise, sustain) |