The Refcomp SW3H-10500 is a 105 HP (78 kW) semi-hermetic refrigeration and air-conditioning screw compressor. It combines an asymmetric rotor profile, flexible capacity regulation, intelligent motor protection and high-precision suction filtration to deliver reliable performance across varying operating conditions.
The SW3H-10500 AC screw compressor uses RefComp's asymmetric 5/6-tooth rotor profile with optimized geometry. This design promotes smooth rotor engagement, reduces vibration and supports efficient compression under varying operating conditions.
Four-step capacity control or stepless regulation from 25% to 100% allows compressor output to follow changing cooling demand. This helps avoid unnecessary full-capacity operation and improves load matching in air-conditioning systems.
The INT69 SNY module monitors motor overheating, reverse phase sequence and phase loss. Combined with six PTC sensors and operating-status feedback, it helps protect the motor and makes abnormal conditions easier to identify.
A built-in 100 μm suction filter captures impurities from incoming refrigerant gas before they reach the motor. This helps reduce internal contamination and protects critical components from damage caused by foreign particles.
| Model | SW3H-10500 |
|---|---|
| Rated power | 105 HP / 78 kW |
| Displacement 50/60 Hz | 286 / 343 m³/hr |
| Weight | 535 kg |
| Capacity regulation | 25%, 50%, 75%, 100% 4-step; 25%–100% stepless |
| Standard motor | Y/△ – 400V/3/50Hz – 460V/3/60Hz |
| Star/Delta start current | 338 / 1015 A |
| Max operating current | 180 A |
Q1: How do I determine whether the SW3H-10500 is suitable for my air-conditioning system?
To select an AC screw compressor, provide the required cooling capacity, refrigerant, evaporating and condensing temperatures, power supply and expected load variation. The operating range of this high-temperature screw compressor should be checked against actual system conditions.
Q2: What should be considered when replacing an existing chiller compressor?
Before replacing an existing unit with this semi-hermetic screw compressor, compare mounting dimensions, suction and discharge connections, oil-line requirements and control compatibility. Confirm these details against the existing equipment drawings before ordering.
Q3: What electrical checks are necessary before commissioning?
For this 105 HP screw compressor, verify that the available power supply matches the motor nameplate. Check the star-delta starter, phase sequence and protection wiring before initial startup.
Q4: What should I check if capacity regulation does not respond correctly?
If the AC screw compressor does not follow the controller's load commands, first verify the selected capacity-control mode, wiring and control signals. If the issue remains, have a qualified technician inspect the slide-valve control assembly.
