Technical Specification

Brief introduction:

Small freezer training equipment includes three main parts of electrical control systems, refrigeration units, and real storage room. It can simulate the control principle and workflow of real small freezer. The students ca learn the cold storage unit design, load calculation, electrical design, warehouse design, cold storage management, cost estimates and other aspects skills.

Technical parameter:

1.1) Power supply: AC380V±10%,50Hz

1.2) Compressor power: ≥2.5HP

1.3) Refrigerant: R22

1.4) Dimension: approximately 6000mm*2400mm*2500mm

1.5) Safety protection: overvoltage, over current, overload, leakage and grounding.

Training contents:

(1) Understand the structure and principle of small freezer system

(2) Design of small freezer system, including cooling capacity calculation, cold room installation.

(3) Electrical control system design of small freezer system, including design of electrical diagrams, electrical protection.

(4) Small freezer system startup, operation, commissioning and protection technology.

(5) Small freezer fault analysis, solutions and prevention

Fault analysis and solutions

There are total below 19 faults can be set for fault diagnosis and elimination:

(1) Freezer temperature controller damaged.

(2) High temperature room temperature controller damaged.

(3) Freezer temperature sensor circuit disconnected.

(4) Freezer temperature sensor circuit shortcut.

(5) Freezer defrosts sensor circuit disconnected.

(6) Freezer defrosting sensor circuit shortcut.

(7) Pressure controller damaged.

(8) Condenser fan damaged.

(9) Freezer cooler damaged.

(10) Compressor does not work.

(11) Freezer does not work.

(12) Over-current protection alarm.

(13) High temperature room sensor circuit disconnected.

(14) High temperature room sensor circuit shortcut.

(15) High temperature room defrost sensor circuit disconnected.

(16) High temperature room defrost sensor of circuit shortcut.

(17) High temperature room is not cooling.

(18) The freezer does not defrost.

(19) High temperature room does not defrost.