Screw compressor KRSP

rotaryairpneumatic

1. Overview
The KRSP series is Kaishan's premium direct drive single stage rotary screw air compressor line, built around the internationally patented 'SKY' air end — 1:1 direct drive with no gearbox, quadruple SKF bearings and a lifetime air end warranty. Covering 18.5–400 kW (20–500 HP at 60 Hz) and 8–12.5 bar (100–160 PSI), with sound levels as low as 67–80 dB(A), the KRSP series delivers low capital cost, low operating cost and exceptional reliability. An optional Variable Speed Drive provides energy savings of up to 35% or more.
2. Scope of Supply
Each KRSP compressor is supplied including:
 'SKY' series direct drive air end (1:1 drive ratio, no gearbox, lifetime warranty)
 Digital control panel with MODBUS capability
 Laminar flow inlet valve
 High efficiency IE3 TEFC electric motor, Class F insulation
 Single pass oil and after coolers
 'ULTRAWEB' nanofiber air intake filters
 3 stage tangential oil separation (residual oil carryover limited to 3 ppm)
 Centrifugal cooling fans (VSD cooling fan on 150 HP and above)
 316 stainless steel control tubing
 Industrial grade electrical components, WYE Delta starter standard
 Low sound acoustic enclosure and full safety features (guarded rotating components, shrouded electrical components)
 Spin-on lubricant and fluid filters (full-flow, 12μ high-efficiency)
 Optional: Variable Speed Drive (KRSP VSD)
3. Product Details
Air End and Drive
 'SKY' series patented air end: asymmetric 5/6 rotor profile with 100% SKF bearings, KAPP grinder rotor technology for tighter clearances and world class efficiency, precision machined bell housing for rigid alignment. Continued development has increased efficiency by more than 20% over earlier models
 Quadruple discharge bearings absorb radial and axial loads: longer bearing life, quieter operation, increased load carrying capacity, lifetime air end warranty
 Direct drive 1:1 ratio, no gearbox: large slow running air end, elimination of transmission energy losses, flexible coupling with easily removable elements
Controls and Electrical
 Digital control panel: protects the compressor in the event of a fault, service required alerts, sequencing of up to 16 compressors, external monitoring via RS 485, WYE Delta starter standard on all models, MODBUS capability. Touch screen monitors line pressure, oil temperature and working conditions; abnormal conditions trigger a flashing LED and message; microprocessor functions are password protected
 High efficiency motors: comply with all international standards, standard TEFC to protect from dust and moisture, Class F insulation, cooling air bypasses the main compressor compartment for lower component temperatures and longer life
 Industrial grade electrical components: outstanding reliability, excellent component life, worldwide support, standard parts available locally
 316 stainless steel control tubing: corrosion free material for increased reliability; nylon, copper or mild steel tubing will fail in time causing downtime
Cooling, Filtration and Oil System
 Centrifugal cooling fans: higher static pressure allows for energy saving heat recovery, even air flow across the cooler face, VSD cooling fan (150 HP and above) reduces airflow during light load or low temperature periods, cooling air bypasses the main compartment for minimal internal dust build up
 'ULTRAWEB' air intake filters: full airflow, low restriction nanofiber technology, deep bed media for excellent dust capture, increased free air delivery for further energy and running cost savings
 3 stage tangential oil separation: excellent mechanical pre-separation, reduced oil impingement on the separator element, lower pressure drop, longer element life, lower absorbed power, residual oil carryover limited to 3 ppm
 Single pass oil and after coolers: minimize thermal stress, correct running temperatures at 122°F (50°C) ambient, low oil carryover increases bearing life, low cooling air velocity reduces dust build up
Package, VSD and Safety
 Low life cycle cost: low capital cost + low operating cost + exceptional reliability and efficiency
 all electrical wiring high performance including cable and converters, optimum operating temperature to prevent moisture, rugged proven technology, heavy duty isolators, SAE fittings for easy low cost maintenance, spin-on fluid filter for quick maintenance, acoustic enclosure at industry leading 67–80 dB(A)
 KRSP VSD option: robust power platform with state-of-the-art control, soft start, efficient operation across the capacity range by matching flow to demand while maintaining high pressure control; savings as high as 35% or more, with the additional capital cost recovered in less than one year of operation. Drives are renowned for efficient and reliable service and worldwide support
 Safety and the environment: the entire range includes guarded rotating components and shrouded electrical components, reducing OSHA risk and injury