Do you have a question about the Sullair LS-25S-257KW and is the answer not in the manual?
This document is an operator's manual and parts list for an Industrial Rotary Screw Air Compressor, specifically the Sullair LS-25S-257KW model, with Supervisor II equipment.
The Sullair LS-25S-257KW is an industrial rotary screw air compressor designed to provide a continuous supply of compressed air. It features a single-stage, positive displacement, lubricated-type compressor. The unit is designed for industrial applications, providing efficient and reliable compressed air. The compressor includes a Supervisor II control system, which monitors and manages the compressor's operation, displaying various parameters and status indicators.
The compressor is a lubricated rotary screw type. Key components include an air inlet filter, electric motor, compressor unit, cooling fan, minimum pressure valve, blowdown valve, sump tank, fluid stop valve, and main fluid filter. The Supervisor II control system is integrated into a control panel, providing a user interface with a display and keypad for monitoring and control.
The control system operates in various modes:
The compressor includes a sophisticated cooling and lubrication system. Fluid is injected into the compressor unit for both lubrication and cooling. The system includes a fluid cooler, aftercooler, fluid flow filters, and thermal valves to maintain optimal operating temperatures. Air-cooled and water-cooled models are available, with specific piping and components for each configuration.
Pressure ranges for operation are critical:
The electrical system includes a motor that drives the compressor. Proper electrical connections and motor rotation direction are critical for safe and efficient operation. The manual provides detailed instructions for electrical preparation and motor rotation checks.
The compressor is designed for ease of operation with the Supervisor II control system. The control panel provides a clear display of operating parameters such as line pressure, sump pressure, oil filter differential pressure, and various temperatures (T1, T2, T3). Status indicators for START, STANDBY, ON LOAD, FULL LD, and RMT STOP provide immediate feedback on the compressor's state.
Keypad controls allow users to:
The manual emphasizes safety features, including warnings about moving parts, hot surfaces, sharp edges, toxic substances, electrical shock, and proper lifting procedures. It also provides guidance on proper installation, including mounting, ventilation, service air piping, coupling alignment, and fluid level checks.
Regular maintenance is crucial for the longevity and efficient operation of the Sullair compressor. The manual outlines a comprehensive maintenance schedule, including daily, 50-hour, and 1000-hour intervals.
Key maintenance tasks include:
The manual also includes a detailed parts list with illustrations, making it easy to identify and order replacement parts. This includes components for the motor, compressor frame, air intake system, fluid cooling piping system (both air-cooled and remote cooler configurations), compressor discharge system, Sullair control, compressor actuator, electro-pneumatic control system, enclosure, unit tubing, and decals.
Sullair offers Air Care Seminars, which are 3-day courses providing hands-on instruction in proper operation, maintenance, and service of Sullair equipment. These seminars are recommended for maintenance and service personnel.
| Brand | Sullair |
|---|---|
| Model | LS-25S-257KW |
| Category | Air Compressor |
| Language | English |











