Page 15 - R&ACT 1st Year - TT- TELUGU

capillary & filter drier, 48. Test performance of direct and drier. Evacuation, leak
evacuation &gas start refrigerator. (05 hrs.) testing, gas charging method
charging.(NOS: Not in refrigerator, (07 hrs..)
available) 49. Cleaning and flushing of
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 ref rigerat or hrs.) working of Frost Free (2 or
Knowledge (electrical/ 52. Checking, fault finding 3 door) Refrigerator parts
10 Hrs. mechanical), wiring and testing of electrical particularly, the forced draft
of frost-free freeze accessories like thermostat, cooling, Air Duct circuit,
& air distribution in timer, defrost heaters, bi- temperature control in Freezer
refrigerator sector. metal, air louvers etc. and & cabinet of Refrigerator,
Leak detection, other system components. air flapper / louver used in
evacuators & gas (10 hrs.) refrigerator section, automatic
charging. defrost system. Study of
53. Checking air distribution Electrical accessories & their
system. (03 hrs.)
functions ( Timer, Heater,
54. Servicing of refrigerator. Bimetal, Relay, OLP, T/S etc.)
(07hrs.) Refrigerator cabinet volume
55. Testing the performance of calculation.5hrs..)
refrigerator. (02 hrs.)

56. Identify three and four door no Refri g erato r (I n verter
frost refrigerator. (07 hrs.) Technology) Study the
construction and its working
57. Testing components of three/ of two and three door frost
four door refrigerator. (03 hrs.)
free 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, working,
fixed and variable
Professional 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
Professional and their wiring and by using digital multimeter DC 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..)
(xiii)