cos modul 11 aircond

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COURSE OF STUDYAUTOMOTIVE TECHNICIAN (P-119-1)

MODULE 11 : AIR-CONDITIONING SYSTEM REPAIR

Module S!o"#$#

This module is developed for students to acquire knowledge and skills in air-conditioning system repair. At the end of this module trainees willbe able to :

• identify air-conditioning system location

• remove air-conditioning belt

• remove air-conditioning tensioner assembly

• install air- conditioning tensioner assembly and belt

• discharge refrigerant from air-conditioning system

• remove evaporator air filter

•

install evaporator air filter• remove cooling unit assembly

• check cooling unit components

• install cooling unit assembly

• recharge refrigerant in air-conditioning system

Module O%&e'$e#

Carry out air-conditioning system repair using hand tools set, special tools, air-conditioning belt, belt tensioner assembly, air-conditioner servicemanual, fender cover, lubricantgrease, replacement parts, wheel stopper, safety stands, personal protection equipment, recovery and recycle

machine, refrigerant oil, and environmental act so that air-conditioning system location identified, air-conditioning belt and air-conditioningtensioner assembly removed, air-conditioning tensioner assembly and belt installed, refrigerant from air-conditioning system discharged,evaporator air filter removed, evaporator air filter installed, cooling unit assembly removed, cooling unit components checked, cooling unitassembly installed and refrigerant in air-conditioning system recharged in accordance with manufacture!s specifications.

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Module Co!e!

T*#+ No

"#.#" $eplace air-conditioning belt and tensioner assembly"#.#% $eplace air-conditioning evaporator air filter "#.#& $ecover and recycle vehicle air-conditioning refrigerant

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STEPS ,NOLEDGE PERFORMANCE HRSDELIVERY

MODEASSESSMENT MODE

1. 'dentify air-conditioning systemlocation

"." (urpose of air-conditioningsystem

".% Types of air-conditioningsystem components

".& Air- conditioning systemcomponent location

"." )etermine air-conditioning systemcomponent location

Attitude*afety:

•

+eticulous wheninterpreting servicemanual

"

%

ecture

)emonstration andbservation

nowledge /)0

(erformance /AC0

• Air-conditioning

system componentlocation

• )etach air-

conditioningbelts from pulley

• )etach tensioner

assembly

• 1i2 the air-

conditioning

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MODEASSESSMENT MODE

tensioner assemblyand belt

• Ad3ust belt tension

according tospecification

• Tighten air-

conditioningtensioner assembly tospecifications

• Types of air-

conditioningrefrigerant

• *et up recovery and

recycle machine in

air-conditioningsystem

2. $emove air-conditioning belt

%." Types of air-conditioningbelt

%.% (rocedures of removing air- conditioning belt

%." )etach air-conditioningbelts from pulley

%.% )etermine serviceabilityof belt

Attitude*afety:

• 4se fender cover

"

%

ecture


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MODEASSESSMENT MODE

&. $emove air-conditioningtensioner assembly

&." Tensioner assemblyconstruction

&.% Types of air-conditioningtensioner

&.& Types of air-conditioning pulley with bearing

&." )etermine serviceabilitytensioner assembly

&.% )etach tensioner assembly

Attitude*afety:

• +eticulous when

removing tensioner

%

&

ecture


• perate recovery and

recycle machine

• )etach evaporator air filter

• 1i2 evaporator air

filter

• )etach cooling unit

assembly

• 'nspect e2pansion

valve function ability

• 'nspect thermostat

function ability

• Assemble cooling unit

components

• 1i2 cooling unit

assembly

• (ack insulator to

cooling unit

• 5acuum air-

conditioning system

• Top up refrigerant oil

in air-conditioningsystem

• Charge refrigerant in

air-conditioningsystem

6. 'nstall air-conditioningtensioner assemblyand belt

6." (rocedures of installing air- conditioning tensioner

assembly and belt6.% *pecifications of belt

tension and tighteningtorque 6." 1i2 the air-conditioning

tensioner assembly andbelt

6.% Ad3ust belt tension

according tospecification

6.& Tighten air-conditioning tensioner assembly to

specifications

"

&

ecture


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MODEASSESSMENT MODE

Attitude*afety:

• +eticulous when

ad3usting belt tension

7. )ischargerefrigerant from air-conditioning system

7." 8nvironmental $ules and$egulations of air-conditioning system

7.% Types of air-conditioningrefrigerant

7.& (rocedures of operatingrecovery and recycle

machine7.6 Types of high and low

pressure and colour code7.7 Techniques of recovering

air-conditioning refrigerant7." 'nterpret 8nvironmental

$ules and $egulationsof air-conditioningsystem

7.% )etermine types of air-conditioning refrigerant

7.& *et up recovery and

recycle machine in air-conditioning system

7.6 perate recovery andrecycle machine

%

%

ecture


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MODEASSESSMENT MODE

Attitude*afety:

• Comply with

environmental act

• 9andle equipment and

special tools with care

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MODEASSESSMENT MODE

. $emove evaporator air filter

." 1unction of evaporator airfilter

.% peration of evaporator air 1ilter .& (rocedures of removing

evaporator air filter .6 Techniques of removing

evaporator air filter

." ocate position ofevaporator air filter

.% )etach evaporator airfilter

Attitude*afety:

• +eticulous when

removing evaporator airfilter

"

%

ecture


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MODEASSESSMENT MODE

;. 'nstall evaporatorair filter

;." (rocedures of installingevaporator air filter

;.% Techniques of installingevaporator air filter

;." 1i2 evaporator air filter

Attitude*afety:

• +eticulous when fi2ing

evaporator air filter

"

%

ecture



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MODEASSESSMENT MODE

=. Check cooling unitcomponents

=." 1unction of e2pansionvalve

=.% 1unction of thermostat=.& +ethod of checking

e2pansion valve functionability

=.6 +ethod of checkingthermostat function ability

=." 'nspect e2pansion valve function ability=.% 'nspect thermostat

function ability

"

%

ecture


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MODEASSESSMENT MODE

"#. 'nstall cooling unitassembly

"#." Techniques of assemblingcooling unit components

"#.% Techniques of installing

cooling unit"#.& Types of insulator

"#." Assemble cooling unitComponents

"#.% 1i2 cooling unitassembly

"#.& (ack insulator tocooling unit

Attitude*afety:

•

+eticulous when fi2ingcooling unit assembly

"

%

ecture


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MODEASSESSMENT MODE

"". $echargerefrigerant in air-conditioning

system

""." 5olume of refrigerantrequired for air-conditioning system

"".% (rocedures of vacuumingand charging

"".& Types, function, andquantity of refrigerant oil

""." 5acuum air-conditioning

system"".% Top up refrigerant oil in

air-conditioning system"".& 8nsure recommended

quantity of refrigerant

oil is filled in air-conditioning system"".6 Charge refrigerant in

air-conditioning system

Attitude*afety:

• Comply with

environmental act

• >ear personal

protection equipment

• 9andle equipment and

special tools with care

"

%

ecture


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Co.e A%$l$$e#

#".#6 Analy?e information#".#7 4tili?e the internet to locate and gather information

#".# 4tili?e word processor to process information#6.#" rgani?e own work activities#6.#6 Apply problem solving strategies

@T8 @ A**8**+8@T +)8: A : (ractical B : (ro3ect C : ral ) : >ritten 8 : thers

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Sele'ed Re/e.e!'e# *!d Aud$o V$#u*l M*e.$*l#

REFERENCES AUDIO VISUAL MATERIALS

". Anthony 8.*chwaller /%##60 Total Automotive Technology, 6th

8dition-)elmar earning, @ew ork 4*A, '*B@: "-6#"

cos modul 11 aircond

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