Page 16 - R&AC - 1st Year TT Gujarati

capillary & filter drier, 48.Test performance of direct testing, gas charging method in
evacuation &gas start refrigerator. (05 hrs.) refrigerator, (07 hrs..)
charging.(NOS: Not 49.Cleaning and flushing of
available)
evaporator and condenser
with dry nitrogen. (05 hrs.)

50.Replacement of capillary tube
and drier. (05 hrs.)
Professional Check components 51.Tracing electrical circuit of Frost Free Refrigerator
Skill 42 Hrs.’ of frost-free Frost-Free refrigerator. (10 Study the construction and
Professional refrigerator hrs.) working of Frost Free (2 or 3
Knowledge (electrical/
10 Hrs. mechanical), wiring 52.Checking, fault finding and door) Refrigerator parts
of frost-free freeze & testing of electrical particularly, the forced draft
cooling, Air Duct circuit,
accessories like thermostat,
air distribution in timer, defrost heaters, bi- temperature control in Freezer
refrigerator sector. metal, air louvers etc. and & cabinet of Refrigerator, air
Leak detection, other system components. flapper / louver used in
evacuators & gas (10 hrs.) refrigerator section, automatic
charging. defrost system. Study of
53.Checking air distribution
system. (03 hrs.) Electrical accessories & their
functions ( Timer, Heater,
54.Servicing of refrigerator. Bimetal, Relay, OLP, T/S etc.)
(07hrs.) Refrigerator cabinet volume
calculation.5hrs..)
55.Testing the performance of
refrigerator. (02 hrs.)

56.Identify three and four door no Refrigerator (Inverter
frost refrigerator. (07 hrs.) Technology)Study the
construction and its working of
57.Testing components of three/ two and three door frost free
four door refrigerator. (03 hrs.)
refrigerator with inverter
technology Care and
maintenance. (05 hrs..)

Professional Dismantle, repair and 58.Identify different types of Compressor
Skill 39 Hrs.; assemble hermetic, compressor. (09 hrs.) Function, construction,
fixed and variable
Professional working, application of hermetic
Knowledge speed compressor, compressor,(Fixed speed and
and testperformance.
10 Hrs. variable speed compressor)like
Reciprocating, rotary, scroll
and inverter type.(5Hrs..)
59.Dismantle /assembling Study the construction &
reciprocating/rotary working of reciprocating, rotary,
compressor. (15 hrs.) scroll, wobble & swash plate
compressor. wet compression,
60.Identify different parts of oil, properties, lubrication
dismantled compressor. methods. (05 hrs..)
(15 hrs.)

Professional Identify the terminals 61.Identify terminal sequence of AC motors and their types.
Skill 50 Hrs.; of sealed compressor hermetic compressor motor Advantages of AC motor over DC
Professional and their wiring and by using digital multimeter motor. Split phase induction
Knowledge 8 measure current, and measure starting current motors, working principle and
Hrs. volts, watts and use and running current by using construction.Starting winding
of DOL starter with ammeter and AVO meter. and running winding.Starting
different types of (12 hrs.) current and running current.
motors. Study the shaded pole motor,
RSIR, CSIR, CSR and PSC
motors.(6 Hrs..)
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