Screw compressor PMV

rotaryairelectric

1. Scope
• This specification is for direct drive, oil-lubricated, single-stage, air cooled, variable speed PMV 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: 15/22/37/55kW
o Outlet Connection: ISO standard male thread
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:
• Good Energy Efficiency & Cost of Ownership:
o Energy Efficient SKY Single-Stage Design
o Premium (9) SKF bearings for supreme reliability

• 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.
• Normally open inlet valve for rapid pressure builds up.
• Totally Enclosed Oil-Cooled type main motor with insulation class F, IE4 super premium efficiency.
• Main motor is a permanent magnet type.
• The main motor and airend are designed with a common shaft in a direct-driven, flange-connected configuration, fully enclosed to prevent dirt and dust ingress.
• Kaishan premium synchronous control frequency converter.
• Oversized coolers (air and oil) 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.
• Fitted with an aluminum, air-cooled, oil cooler and aftercooler.
• Axial fans driven by Totally Enclosed Fan Cooled motors.
• 3-Stage oil separation to ensure low oil carryover.
• Factory fill with “kerry-8#” premium PAO/POE synthetic lubricant designed for 4,000 hour life
• Full Feature Intelligent Controller:
o Both touch screen or push-button navigation
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 Element outlet temperature
o Compressor status
o Motor overload 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 overload
o Service warnings
o Oil filter clogging
3. Optional features
• Package pre-filter
• Food grade Oil