NZQA Expiring unit standard 3222 version 6 Page 1 of 3 Title Maintain chilled water systems Level 4 Credits 18 Purpose This unit standard is for people who work, or intend to work, in the heating, ventilation and air conditioning sector of the engineering industry. People credited with this unit standard are able to: prepare a maintenance schedule for a chilled water system; inspect and carry out maintenance on the chilled water equipment and plant; check the controls function; monitor maintenance of the system; and complete maintenance documentation. Classification Mechanical Engineering > Heating, Ventilating, and Air Conditioning Available grade Achieved Entry information Critical health and safety prerequisites Prerequisites: Unit 3200, Integrate chilled water systems components, Unit 3846, Maintain commercial and light industrial refrigeration and air conditioning systems, or Unit 3847, Maintain industrial refrigeration systems or demonstrate equivalent knowledge and skills. Explanatory notes 1 Legislation, regulations and codes pertaining to the maintenance of mechanical services are to be complied with. 2 Knowledge of the operating principles of refrigeration systems is also recommended. Outcomes and evidence requirements Outcome 1 Prepare maintenance schedule for the chilled water system. Evidence requirements 1.1 Maintenance schedules and report formats for the system are prepared in accordance with company policies and procedures, and meet client’s requirements. Competenz SSB Code 101571 New Zealand Qualifications Authority 2016 NZQA Expiring unit standard 3222 version 6 Page 2 of 3 1.2 Maintenance schedules and reports comply with legislative requirements and are consistent with building code standards. 1.3 Maintenance schedules and reports comply with operating and maintenance specifications laid down in system documents. Outcome 2 Maintain chilled water system components, controls and operation. Evidence requirements 2.1 Chilled water system components are inspected at the intervals specified in the maintenance schedule. 2.2 Chilled water system components are maintained to the specifications and standards laid down in the maintenance schedule. 2.3 Control functions and system operation are tested and adjusted to perform within the tolerances and ranges maintenance schedule. 2.4 Required follow-up action is arranged in accordance with the maintenance schedule. Outcome 3 Complete and monitor chilled water system maintenance documentation. Evidence requirements 3.1 Maintenance reports are completed and actioned in accordance with system documents. 3.2 Maintenance schedule and report formats are periodically reviewed, revised and verified as accommodating changes in system or equipment characteristics or changes in legislative requirements. Replacement information This unit standard, unit standard 3217, unit standard 3218, unit standard 3219, unit standard 3220, unit standard 3221, and unit standard 3223 have been replaced by unit standard 26338. This unit standard is expiring. Assessment against the standard must take place before the expiry date set out below. Competenz SSB Code 101571 New Zealand Qualifications Authority 2016 NZQA Expiring unit standard 3222 version 6 Page 3 of 3 Status and review information Expiring date 16 July 2010 Date version published 16 July 2010 Expiry date 31 December 2016 Accreditation and Moderation Action Plan (AMAP) reference 0013 This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do. Please note Providers must be granted consent to assess against standards (accredited) by NZQA, or an inter-institutional body with delegated authority for quality assurance, before they can report credits from assessment against unit standards or deliver courses of study leading to that assessment. Industry Training Organisations must be granted consent to assess against standards by NZQA before they can register credits from assessment against unit standards. Providers and Industry Training Organisations, which have been granted consent and which are assessing against unit standards must engage with the moderation system that applies to those standards. Consent requirements and an outline of the moderation system that applies to this standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The AMAP also includes useful information about special requirements for organisations wishing to develop education and training programmes, such as minimum qualifications for tutors and assessors, and special resource requirements. Competenz SSB Code 101571 New Zealand Qualifications Authority 2016