Screw compressor PMV2

rotaryairpneumatic

1. Scope
• This specification is for direct drive, oil-lubricated, inline-two-stage with flexible discharge port, air cooled, variable speed PMV-2 series rotary screw air compressor.
• The compressor manufacturer shall be certified under ISO 9001 / 9002 quality standards and ISO 14001 environmental standards.
• The compressor shall be compliant with Machinery safety in accordance with Directive 2006/42/EC. (For European market)
• The compressor shall be compliant with Pressure Equipment regulations in accordance with Directive 2014/68/EU. (For European market)
• The units shall be manufactured in accordance with this specification.
o Drive Motor: 90/110/132/160/200/250/315kW
o Connection: ISO standard flange
o Voltage: 380 or 400 or 415V/3Ph/50Hz
o Rated working pressure6-10bar
o Ambient temp.0-45℃
o Altitude0-1000m

2. Features include:
• Highest Energy Efficiency of Ownership:
o Energy Efficient SKY2 two-Stage Design
o Premium SKF bearings for supreme reliability
o Inter-stage mechanical mixing for approaching isothermal compression
o The flexible discharge port enables the compression ratio to be automatically adjusted according to discharge pressure

• Fitted with an aluminum, air-cooled, oil cooler and after cooler.
• Vertical coolers installed on one side, achieving better cooling effect through the division of the hot and cold zones.
• Axial fans driven by Totally Enclosed Fan Cooled 6 pole low sound level and long-life motors.
• Variable-speed design, maintain a stable discharge pressure by adjusting the motor speed according to the compressor discharge pressure.
• Start / stop regulation to automatically stop the compressor as required during low demand periods.
• Thermal valve combined with variable-speed fan control maintains stable oil temperature within the appropriate range.
• Normally closed inlet valve ensures the security of the system.
• Main motor is a permanent magnet type.
• Kaishan premium synchronous control frequency converter.
• Oversized oil cooler designed for high ambient applications.
• Full powder coated acoustical enclosure with hinged doors providing easy access to maintenance items.
• Flame retardant foam stick on acoustical enclosure to attenuate sound level.
• Heavy duty inlet filter for clean compressed air.
• Stainless steel flex lines on air circuit for increased reliability and reduced vibration.
• 3-Stage oil separation to ensure low oil carryover (< 3 mg /m3).
• Oversized separate tank to ensure less pressure drop and allow operation at lower discharge pressure.
• Jack bolt and Jack up separator tank lid for easy and quick service.
• Easy access to all the service parts.
• Factory fill with “kerry-10#” premium PAO/POE synthetic lubricant designed for 8,000 hour life
• Full Feature Intelligent Controller:
o Kaishan KAC7070 touch screen
o Precise Process Control: Loading, Unloading & Speed Regulation
o Monitor the operation and condition of the air compressor
o Provides safety monitoring, protection and service alerts
o Built in networking capabilities and external monitoring
o Customizable Working Modes and Scheduled Tasks

• The control system shall have the capability to monitor the following functions:
o Discharge air pressure
o Airend outlet temperature
o A/O separator element outlet temperature
o Compressor status
o Input power status
o Motor overload status
o Cooling fan motor overload status
o Motor drive status
o Loaded hours
o Running hours
o Energy consumption

• Compressor protective functions shall include:

o Emergency stop
o High discharge temperature
o High discharge pressure
o Motor over-current
o Service warnings
o Oil filter clogging
o Air filter clogging
o A/O separator element fire
o Phase sequence error
o Phase failure protection

3. Optional features
• Operating voltage alternatives (380V/50Hz, 380 V /60 Hz, 460 V /60 Hz)
• Package pre-filter
• Water Cooled
• Fan variable speed control
• Heat Recovery External
• Automatic Circuit Breaker (Configured 400/3/50 Only)
• Food grade Oil
• Low ambient temperature kit
• Automatic grease for motor
• Less after cooler