CNT0306E HP Pressure Switch

Description

Trane CNT0306E HP Pressure Switch (061F9259)

Trane Chiller Hight Pressure Switch CNT0306E HP details;

• ACB-2UC121 Type Danfoss High Pressure Controls Switch, Manuel Reset
• Differential: 23.0 Bars
• Maximum Pressure: 45.0 Bars
• Connection: 1/4″
• Refrigerant: R134A
• Model Number: 061F9259
• Trane Part Number: CNT0306E
• Commonly Used on Trane RTAC, RTAD and RTAF Screw Chiller Models
• Replaces / Supersedes: CNT-306E

Chiller documentation for HP Pressure Switch can be downloaded from below links;

• Trane Chiller Model RTAC HP Pressure Switch (Product Catalog, Sales Brochure, IOM)
• Trane Chiller Model RTAD HP Pressure Switch (Product Catalog, Sales Brochure, IOM)
• Trane Chiller Model RTAF HP Pressure Switch (Product Catalog, Sales Brochure, IOM)

A High Pressure Switch (HPS) and a low pressure switch (LPS) are protective devices for the compressor and refrigeration circuit. The high pressure switch monitors the system for an inoperative outdoor motor, and/or a dirty/restricted condenser (outdoor) coil. The low pressure switch monitors the refrigeration system for a loss of refrigerant charge, and may also be helpful in stopping the evaporator (indoor) coil from freezing up due to a dirty filter or low airflow over the coil. I say “may” because the low pressure switch cut-out setting could be set too low (15-20 lbs.) to be of any help. An evaporator coil could start to form ice at 30 lbs. low pressure charge.