NZQA Expiring unit standard
20600 version 3
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Title
Design a basic pneumatic power system under supervision
Level
3
Credits
15
Purpose
People credited with this unit standard are able to, under
supervision, prepare to design, and undertake design of a basic
pneumatic power system.
Classification
Mechanical Engineering > Fluid Power - Pneumatics
Available grade
Achieved
Entry information
Critical health and
safety prerequisites
Unit 17344, Draw a diagram, and explain the operating
principles, of a simple pneumatic power system, or
demonstrate equivalent knowledge and skills.
Explanatory notes
1
Basic pneumatic power system refers to a permanently fixed combination of both
production and consumption system components, which excludes sequential control.
2
The basic pneumatic power system designed for this unit standard must is to be of
an elementary design that includes the following components.
Air production system components:
a Air compressor - reciprocating (piston or diaphragm) or rotary (vane or screw)
b Air compressor drive (electric motor or combustion engine)
c Tank (reservoir)
d Air control devices, examples of which include pressure switch, check valve,
pressure gauge, safety valve
e Air conditioning equipment, examples of which include refrigerated air dryer, line
filter, and drains (manual, auto float, or electrical).
Air consumption system components:
a Air service unit, components of which include standard filters, oil removal filters,
regulators - relieving and non relieving, lubricators.
b Actuator, examples of which include linear cylinder or rotary actuator.
c Air tool (grinder, drill).
d Directional control valves that meet the following requirements - three and five
port, two and three position, pilot and solenoid operated.
e Speed controller(s).
f Air-supply tubing.
Competenz
SSB Code 8104
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
20600 version 3
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3
The design and specification of the pneumatic power system is the outcome of this
unit standard. The actual construction of the system is not a requirement of
assessment.
4
Symbols must conform to ISO 1219, Fluid power systems and components - Graphic
symbols and circuit diagrams - Part 1: Graphic symbols (1991), and Part 2: Circuit
diagrams (1995).
Outcomes and evidence requirements
Outcome 1
Prepare to design a basic pneumatic power system.
Evidence requirements
1.1
Design specifications and operational requirements are understood and
confirmed with supervisor.
Range
1.2
Component working principles in the specification are explained.
Range
1.3
may include but is not limited to - valve spool configuration,
reservoir design, relationship and placement within the system.
Reference is made to tube charts for line size relative to flow rate.
Range
1.4
may include but is not limited to - travel speeds, stroke, load,
force, work.
hard copy, electronic.
Design safety and regulatory requirements are identified and confirmed with
supervisor.
Outcome 2
Undertake design of a basic pneumatic power system.
Evidence requirements
2.1
Calculations are made to meet operational requirements of system and
determine sizing of components to meet design specification.
Range
may include but is not limited to - area, pressure, force, flow,
tubing size.
2.2
Terminology and symbols are selected to match specification.
2.3
Design meets specification and operational capabilities.
2.4
Design and operational capabilities meet safety and regulatory requirements.
Competenz
SSB Code 8104
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
2.5
20600 version 3
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Documentation meets circuit specifications and operational requirements.
Range
to include - components list, symbols to ISO 1219;
may include but is not limited to - recommended start up and
shutdown procedures, description of operation and safety
information, maintenance schedule, consumables information.
Replacement information
This unit standard and unit standard 20601 replaced unit
standard 2726.
This unit standard is expiring. Assessment against the standard must take place by
the last date for assessment set out below.
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
25 May 2004
31 December 2015
Review
2
18 March 2011
31 December 2017
Rollover
3
15 October 2015
31 December 2017
Consent and Moderation Requirements (CMR) reference
0013
This CMR 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 CMRs. The CMR 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 8104
 New Zealand Qualifications Authority 2016