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Sullair LS-25S-257KW - User Manual

Sullair LS-25S-257KW
83 pages
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INDUSTRIAL ROTARY SCREW
LS---25S---257KW
EQUIPMENT NO.
OPERATOR’S
MANU AL AND
Part Number 02250127---759
eSullair Corporation
AIR COMPRESSOR
SUPERVISOR
II
PARTS LIST
1 --- M C --- Q B 0 0 1
0 --- M C --- Q B 0 0 1
2 --- M C --- Q B 0 0 1

Table of Contents

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Overview

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.

Function Description

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.

Important Technical Specifications

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:

  • Start/Full Load: In this mode, the air inlet valve is open, and the spiral valve is at its maximum position, allowing the compressor to operate at full capacity.
  • Modulation/Unload: This mode adjusts the air inlet valve and spiral valve to match air demand, reducing power consumption when full capacity is not required.
  • Automatic Operation: The compressor automatically adjusts its operation based on air demand, switching between full load, modulation, and unload 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:

  • Minimum Pressure: The minimum pressure valve ensures a minimum pressure of 60 psig (4.1 bar) in the compressor sump, essential for proper lubrication and operation.
  • Discharge Pressure: The compressor can operate up to 125 psig (8.6 bar) or 175 psig (12.1 bar) depending on the model.
  • Pressure Regulation: The control system regulates discharge pressure within a specified range, typically 100 to 110 psig (6.9 to 7.6 bar) for full load operation.

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.

Usage Features

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:

  • Program: Enter and modify parameter settings.
  • Display: View various operating parameters and status information.
  • Up/Down Arrows: Navigate through menus and adjust values.
  • Auto: Select automatic operation mode.
  • PRG: Access programming functions.
  • DSP: Access display functions.

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.

Maintenance Features

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:

  • Daily Operation: Check fluid levels, observe normal operating parameters on the Supervisor II display, and listen for unusual noises.
  • Air Filter Maintenance: Regular inspection and replacement of the air filter elements (primary and secondary) are essential. The manual provides detailed instructions for element removal and cleaning.
  • Separator Maintenance: The separator elements should be replaced periodically to ensure efficient air/fluid separation.
  • Fluid Change: The compressor fluid (Sullube) should be changed every 8000 hours or once a year, whichever comes first. The manual specifies the type of lubricant to be used.
  • Fluid Filter Maintenance: The main fluid filter should be replaced regularly.
  • Differential Pressure Regulator Adjustment: Instructions are provided for adjusting the differential pressure regulator to maintain optimal performance.
  • Drive Coupling Installation and Alignment: Detailed steps for installing and aligning the drive coupling are provided, including torque specifications and checks for angular and parallel misalignment.
  • Troubleshooting: A comprehensive troubleshooting guide helps identify and resolve common issues, with symptoms, probable causes, and recommended remedies. This includes issues like the compressor not starting, shutting down with air demand present, excessive operating pressure, and liquid in compressed air lines.

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.

Sullair LS-25S-257KW Specifications

General IconGeneral
BrandSullair
ModelLS-25S-257KW
CategoryAir Compressor
LanguageEnglish

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