Assessor Resource

MEM21018A
Service clock escapements and oscillating systems

Assessment tool

Version 1.0
Issue Date: May 2024


This unit of competency applies to servicing work on clock escapements and oscillating systems undertaken in clock service and repair workshops.

This unit has been developed for watch and clock service and repair apprenticeship training and the recognition of trade-level skills in watch and clock servicing and repair.

Band: A

Unit weight: 4 points

This unit of competency covers servicing techniques for inspecting, diagnosing faults and adjusting common clock escapements (e.g. deadbeat, recoil, cylinder and verge). It also covers techniques for servicing and replacement of different types of oscillating systems, including compound and compensating pendulums, torsional pendulum (e.g. 400 day and Atmos clocks) and platform escapement and floating balances.

You may want to include more information here about the target group and the purpose of the assessments (eg formative, summative, recognition)

Prerequisites

MEM21017A

Service and repair clock timepieces

MEM21013A

Service, test and adjust watch escapements

MEM21012A

Service and repair watch oscillating systems

MEM21009A

Inspect, diagnose, adjust and repair mechanical watches

MEM21008A

Service mechanical watches

MEM18001C

Use hand tools

Employability Skills

This unit contains employability skills.



Evidence Required

List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.

Overview of assessment

A person who demonstrates competency in this unit must be able to service, inspect and adjust clock escapement and oscillating system to industry standards, manufacturer specifications and in accordance with safety regulations and procedures.

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Assessors must be satisfied that the candidate can competently and consistently:

identify different types of clock escapements

diagnose faults in clock escapement action

repair faults in worn escapements

set up and adjust clock escapements for optimum performance

fault-find oscillating systems

calculate length of replacement pendulum

adjust rate of timepiece.

Context of and specific resources for assessment

Assessment may occur on the job or in an appropriately simulated environment. Access is required to real or appropriately simulated situations, including work areas, materials and equipment, and information on workplace practices and OHS practices.

Where applicable, reasonable adjustment must be made to work environments and training situations to accommodate ethnicity, age, gender, demographics and disability.

Access must be provided to appropriate learning and/or assessment support when required. Where applicable, physical resources should include equipment modified for people with disabilities.

Method of assessment

Assessment must satisfy the endorsed Assessment Guidelines of the MEM05 Metal and Engineering Training Package.

Assessment methods must confirm consistency and accuracy of performance (over time and in a range of workplace relevant contexts) together with application of underpinning knowledge.

Assessment methods must be by direct observation of tasks and include questioning on underpinning knowledge to ensure its correct interpretation and application.

Assessment may be applied under project-related conditions (real or simulated) and require evidence of process.

Assessment must confirm a reasonable inference that competency is not only able to be satisfied under the particular circumstance, but is able to be transferred to other circumstances.

Assessment may be in conjunction with assessment of other units of competency where required.

Guidance information for assessment

Assessment processes and techniques must be culturally appropriate and appropriate to the language and literacy capacity of the candidate and the work being performed.

Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assingnment, checklist) and due date here

Assessment task 1: [title]      Due date:

(add new lines for each of the assessment tasks)

Assessment Tasks

Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.

Required skills

Required skills include:

identifying clock escapements and oscillators

adjusting escapement function

diagnosing faults

adjusting rate

setting up and operating timing machine

Required knowledge

Required knowledge includes:

clock escapement types

oscillator types

performance characteristics of escapements and oscillators

escapement adjusting techniques

clock servicing procedures and techniques

calculations and formulas for length of pendulum and geometry of escapements

occupational health and safety (OHS) regulations and procedures

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.

Clock escapements/oscillator systems

Clock escapements/oscillator systems may include:

verge

recoil escapement

deadbeat escapement

cylinder

platform (e.g. lever escapement and cylinder)

simple pendulum

compound pendulum

compensating pendulum

torsion pendulum

floating balance

suspension systems (e.g. spring blade, knife edge and silk)

Record and document repair

Record and document repair may include:

extent and date of repair

cost of replacement part

time spent on procedure

Adjust escapement and oscillator

Adjust escapement/oscillator may include:

condition amount of drop

condition and extent of lockings

condition and amount of impulse

pendulum action and amplitude

in-beat

Torsional pendulums

Torsional pendulums may include:

400 day and Atmos clocks

suspension spring

Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.

Observation Checklist

Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice Yes No Comments/feedback
Identify clock escapements/oscillating systems and applications 
Establish the performance characteristics of the clock according to escapement and oscillating system 
Record and document repair requirements 
Select and use workshop tools and equipment appropriately 
Inspect clock escapement and oscillators for correct function, engagement and performance 
Record and report wear and damage to parts 
Determine appropriate repair process to rectify faults 
Remove and reassemble escapement/oscillators using appropriate tools, equipment and techniques 
Determine theoretical length of replacement pendulum 
Repair or replace escapement and oscillator components 
Adjust escapement and oscillator components for correct operation 
Remove and reassemble torsional pendulums and oscillator components using appropriate tools, equipment and techniques 
Inspect torsional pendulum components and identify condition and wear 
Repair and replace torsional pendulum 
Adjust torsional pendulum for correct operation (in-beat) 
Remove and reassemble platform escapement using appropriate tools, equipment and techniques 
Inspect platform escapement and identify condition/wear 
Repair and replace platform escapement 
Adjust platform escapement and correct depthing with contrate wheel 
Verify/confirm function of clock movement 
Correctly set up and operate mechanical clock timing machine and interpret readings 
Verify clock performance and rate testing 
Adjust rate, as required, according to performance and design characteristics 

Forms

Assessment Cover Sheet

MEM21018A - Service clock escapements and oscillating systems
Assessment task 1: [title]

Student name:

Student ID:

I declare that the assessment tasks submitted for this unit are my own work.

Student signature:

Result: Competent Not yet competent

Feedback to student

 

 

 

 

 

 

 

 

Assessor name:

Signature:

Date:

Assessment Record Sheet

MEM21018A - Service clock escapements and oscillating systems

Student name:

Student ID:

Assessment task 1: [title] Result: Competent Not yet competent

(add lines for each task)

Feedback to student:

 

 

 

 

 

 

 

 

Overall assessment result: Competent Not yet competent

Assessor name:

Signature:

Date:

Student signature:

Date: