Au­to­mo­tive air con­di­tion­ing in­dus­try train­ing

Motor Equipment News - - KEEPING IT COOL -

For many years, OEX has worked in con­junc­tion with other in­dus­try lead­ers to pro­vide the most upto-date train­ing course to the Aus­tralasian air con­di­tion­ing in­dus­try. This year hasn’t been any dif­fer­ent, with New Zealand pro­fes­sion­als suc­cess­fully com­plet­ing an­other an­nual Au­to­mo­tive Air Con­di­tion­ing In­dus­try Train­ing pro­gramme.

This pro­gramme has quickly be­come a bench­mark of train­ing for the air con­di­tion­ing in­dus­try. Con­ducted by Grant Hand, Aus­trala­sia’s lead­ing au­to­mo­tive trainer, it of­fers a three­part course that runs dur­ing Au­gust/ Septem­ber in both the North and South Is­lands.

The first part of the course starts with the ba­sic fun­da­men­tals of au­to­mo­tive air con­di­tion­ing. It is a cru­cial course for all au­to­mo­tive tech­ni­cians, whether you are new to the in­dus­try or just haven’t had the op­por­tu­nity to un­der­take com­pre­hen­sive sys­tem pres­sure or tem­per­a­ture di­ag­nos­tic train­ing be­fore. With the large vari­a­tion of sys­tems cur­rently on the mar­ket, gauge recog­ni­tion alone can no longer be re­lied upon to an­a­lyse charge rates or per­form sys­tem di­ag­nos­tics.

Not only does this course cover the emerg­ing re­frig­er­ants such as 1234yf, the con­tent in­cludes: Com­po­nen­try and sys­tem lay­out Full pres­sure and tem­per­a­ture anal­y­sis of the sys­tem Read­ing and analysing gauges cor­rectly (both pres­sure and tem­per­a­ture) Ba­sic fault di­ag­no­sis of sys­tems Full ser­vic­ing pro­ce­dures Ser­vic­ing equip­ment, rec­om­men­da­tions and guide­lines Crit­i­cal charg­ing of sys­tems (when the charge quan­tity is not known) Analysing charge rates by pres­sure/ tem­per­a­ture anal­y­sis and pipe ‘feel’ Over­views of sys­tem types – TX valves, ex­pan­sion tube, vari­able pumps and full elec­tronic clutch less sys­tems. The sec­ond mod­ule is ad­vanced di­ag­nos­tics in anal­y­sis of au­to­mo­tive air con­di­tion­ing sys­tems - an ex­ten­sion of the ba­sic fun­da­men­tals course. It cov­ers full di­ag­nos­tic tech­niques for all au­to­mo­tive and air con­di­tion­ing sys­tems cur­rently fit­ted to road ve­hi­cles and is es­sen­tial for any­body in­volved in the ser­vice and re­pair of au­to­mo­tive air con­di­tion­ing sys­tems.

Com­pre­hen­sive di­ag­nos­tic man­u­als are pro­vided, which will specif­i­cally ad­dress TX valves, ex­pan­sion (ori­fice) tube sys­tems and vari­able dis­place­ment com­pres­sors. This course evolves each year as tech­nol­ogy and in­dus­try prac­tices change, and utilises a con­sid­er­able amount of su­per­vised prac­ti­cal and group work.

The sec­ond mod­ule con­tent in­cludes: A re­view of pres­sure and tem­per­a­ture anal­y­sis of sys­tems De­tailed op­er­a­tion of the cy­cling clutch ther­mo­static ex­pan­sion valve sys­tem De­tailed op­er­a­tion of the ex­pan­sion/ ori­fice tube sys­tems (there are three vari­a­tions of the ba­sic sys­tem) De­tailed op­er­a­tion of the me­chan­i­cal and elec­tronic vari­able dis­place­ment com­pres­sor sys­tems Full di­ag­no­sis of all three sys­tems in­clud­ing sys­tem (com­po­nent) faults, charge anal­y­sis and per­for­mance anal­y­sis Spe­cial at­ten­tion is given to the cor­rect anal­y­sis of vari­able dis­place­ment com­pres­sor fail­ures (a large num­ber of com­pres­sors are re­placed un­nec­es­sar­ily due to other sys­tem faults). The fi­nal mod­ule is based around earth mov­ing and agri­cul­tural air con­di­tion­ing sys­tems. At­ten­dees of this course should have com­pleted the two pre­vi­ous mod­ules and it is ded­i­cated to the di­ag­no­sis and eval­u­a­tion of mo­bile air con­di­tion­ing sys­tems that are used in off-road ap­pli­ca­tions.

Th­ese sys­tems dif­fer greatly from or­di­nary au­to­mo­tive sys­tems, as they can of­ten suf­fer from pres­sure drops, flow re­stric­tions, in­cor­rect pipe siz­ing and/or poor de­sign that lim­its ca­pac­ity, es­pe­cially in high hu­mid­ity con­di­tions. This course specif­i­cally ad­dresses di­ag­nos­tic pro­ce­dures, pres­sure/tem­per­a­ture anal­y­sis, per­for­mance eval­u­a­tion, ca­pac­ity and ef­fi­ciency anal­y­sis.

The con­tent will help if you have sys­tems that lack per­for­mance, or suf­fer from low ca­pac­ity that you can­not re­pair with­out com­po­nent re­place­ment/mod­i­fi­ca­tions. It also in­cludes: A re­view of pres­sure/tem­per­a­ture anal­y­sis of sys­tems Ca­pac­ity, ef­fi­ciency, per­for­mance eval­u­a­tion and di­ag­no­sis Flow anal­y­sis, pres­sure drop anal­y­sis, hose siz­ing Gauge anal­y­sis to iden­tify ex­ces­sive pres­sure drops, in­cor­rect hose size etc. Data log­ging of per­for­mance Cor­rect pump siz­ing TX valve, su­per­heat and cor­rect sys­tem match­ing Iden­ti­fy­ing con­denser lim­i­ta­tions, cor­rect siz­ing, sub-cool and pres­sure anal­y­sis Iden­ti­fy­ing evap­o­ra­tor lim­i­ta­tions, and flow anal­y­sis. The in­for­ma­tion shared across th­ese cour­ses has been tai­lored to en­sure that you and your team are re­ceiv­ing the most up to date and cut­ting edge in­for­ma­tion avail­able at the time.

If you missed out this year don’t panic, it will come around again next year. For more in­for­ma­tion, con­tact your lo­cal Ash­down-In­gram branch. Phone: 0800 445 889

Auck­land: 22 Sylvia Park Road, Mt Welling­ton 1060

Christchurch: 48 Wordsworth St, Sy­den­ham 8023

Hamil­ton: 126 El­lis St, Frank­ton 3204

Palmer­ston North: Cor­ner Tre­maine Ave and North St, Palmer­ston North 4410

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