Commercial Freezers
Deep Freezer Repairing Course in Prayagraj
Comprehensive technical training in commercial sub-zero (-18°C to -25°C) chest freezers: low back pressure (LBP) compressors, digital temperature controllers, skin condenser tubing, and oil trap mechanics.
Course Topics
- • Low Back Pressure (LBP) refrigeration cycles & displacement
- • Digital temperature controller (e.g., Sub-Zero, Dixell) wiring
- • Internal skin condenser vs external wire-mesh condensers
- • Sub-cooling, superheat calculations, and oil logging remedies
- • High-density polyurethane foam (PUF) insulation restoration
Practical Lab Modules
- • Evacuating low-temperature systems to under 200 microns
- • Replacing failed internal cooling lines with external copper coils
- • Setting digital hysteresis, probe calibration, and defrost cycles
- • Precise gas charging with R290 (propane) and R404A/R134a
Related Courses
View All Courses →Water Cooler Repairing
Drinking water chillers, stainless tanks, and condensing units.
Double Door Inverter Fridge
Frost-free cycles, electronic dampers, and BLDC compressors.
Cassette AC, Chillers & Cold Storage
Industrial chillers, cold rooms, and cooling towers.