LM-HDS Water-lubricated Screw Air Compressor

From the Water-lubricated Air End to Local Control

The package combines low-temperature compression, circulating-water filtration and service access. Component and internal views illustrate the design; confirm the supplied configuration for the selected model.

Water-lubricated Single-screw Compression

Clean water provides lubrication, sealing and cooling without oil injection into the compression chamber. Low-temperature compression and low-speed operation support volumetric efficiency and continuous duty. Verify air quality with drying, filtration and point-of-use testing.

Durable Seals and Valves

Seal materials and metal valves combine wear, temperature and corrosion resistance for the circulating-water system. Water quality, valve condition and seal maintenance affect long-term operation; inspect them according to the service schedule.

Local Microcomputer Control

The local interface brings together operating hours, package status and maintenance information for inspection and parameter management. Confirm interface languages, sensors and protective functions for the delivered configuration.

Match Air Supply to Production Demand

Choose a standard-, medium- or low-pressure model for the process, then match load through variable-speed control. Avoid excessive discharge pressure for low-pressure processes; assess savings from measurements under equivalent air-supply conditions.

1. Air Demand Changes
2. Drive Adjusts Speed
3. Air Supply Matches Load

Evaluate Savings for Your Operating Conditions

Compare measured input power before and after an upgrade at equivalent air delivery and pressure. Combine operating hours with the local electricity tariff to calculate the cost difference. Load variation, unloaded hours, pressure settings and existing equipment efficiency all affect the result; a fixed savings percentage cannot replace a site assessment.

Recirculation Filtration and Operating Management

Water is filtered and recirculated through the system. Water quality, temperature and filter condition require routine attention. Monitoring of water temperature, pressure, flow and operating status can support inspections and maintenance. Match the complete configuration to site water conditions, ambient temperature and downstream treatment, including proper care of the water circuit.

Three Pressure Configurations with Complete Model Specifications

Standard-pressure models cover 7.5–315 kW at 8 / 10 bar; low-pressure models cover 11–220 kW at 4 bar. Medium-pressure models operate at 20 / 30 / 40 bar with two motors, up to 220+185 kW. Select by the values in each row; model numbers are not motor-power ratings.

F denotes air cooling and S water cooling; confirm cooling requirements for the selected model. Medium-pressure power is listed separately for two motors, for example 220+185 kW, not a single-motor rating. Air delivery applies at the pressure in each row. Confirm voltage, frequency, phases and final model codes before ordering.

Flow reference conditions: 0.1 MPa absolute inlet pressure, 20°C inlet temperature and 0% relative humidity, per JB/T11882-2014. Lubricating water volume is not hourly water consumption. Select filter quantity, dimensions and weight for the corresponding model.