Construction Type: Semi-hermetic. The motor and compression mechanism are enclosed within a single, detachable housing, facilitating on-site maintenance and repair.
Operating Principle: Reciprocating Piston. Compresses refrigerant via the reciprocating motion of pistons within cylinders.
High-Performance Valve Assembly: Utilizes an optimized design for valves and lift limiters, ensuring efficient gas flow and compression efficiency, along with smooth and quiet operation.
Forced Lubrication System: Incorporates an efficient oil pump system that guarantees adequate lubrication of all moving parts (e.g., crankshaft, connecting rods, pistons), enhancing reliability and service life.
Robust Crankshaft: Features a high-strength forged steel crankshaft, built to withstand demanding conditions and long-term operation.
Efficient Motor: Specifically designed induction motor providing high starting torque and efficient running performance, with built-in thermal and overload protection.
Application Fields These compressors are primarily used in medium and low-temperature commercial refrigeration equipment, such as:
Cold storage rooms: Small to medium-sized refrigerated and frozen warehouses.
Ice makers.
Commercial ice cream machines.
Beverage cooling equipment.
As models with different displacements, their cooling capacity and power consumption vary. Generally, a larger displacement corresponds to a higher cooling capacity. Typical Performance Parameters
Model
Approx. Displacement (in⊃3;/rev)
Applicable Evap. Temp. Range
Approx. Capacity at Medium Temp. (Evap. ~ -10°C)*
Approx. Capacity at Low Temp. (Evap. ~ -30°C)*
CAJ9513Z / TAJ9513Z
13
Medium/Low Temp.
~ 4.5 - 5.5 kW
~ 2.0 - 2.5 kW
CAJ4517Z / TAJ4517Z
17
Medium/Low Temp.
~ 6.0 - 7.5 kW
~ 3.0 - 3.5 kW
CAJ4519Z / TAJ4519Z
19
Medium/Low Temp.
~ 7.0 - 8.5 kW
~ 3.5 - 4.0 kW
Note: The data above are estimates based on displacement. **Actual cooling capacity can vary significantly depending on specific operating conditions such as refrigerant type, condensing temperature, evaporating temperature, subcooling, and superheat. Summary The TECUMSEH CAJ/TAJ9513Z, 4517Z, 4519Z series are mature and reliable commercial semi-hermetic reciprocating compressors. They cover medium cooling capacity requirements for medium and low-temperature applications. Their robust design and good compatibility with environmentally friendly refrigerants (such as R404A/R507) keep them widely used in the commercial refrigeration sector. When selecting or replacing a compressor, it is essential to verify that its displacement, cooling capacity, and suitable operating conditions match your system requirements.
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