Specifications

Air system – continued:
• Electrical Control and Instrument Panel
 Engine control center shall include a PLC controller
 Electrical panel shall be built in compliance to UL’s Industrial Control Panel Custom Builders
Program and shall be affixed with a UL label
 PLC compressor control system shall consist of a programmable logic controller for monitoring
protection and control of standard compressor systems
 NEMA 4 enclosure
 On/off switch
 Emergency stop
 Final air pressure shutdown
 Warning and alarm indicator lights
9 Lamps shall be a minimum 22mm diameter
9 Lamp test function built-in
9 Lamps will flash code representing fault
 Built-in overtime timer set at five (5) hours with optional times available
 Final separator counter warning and alarm function
 Full support of SECURUS warning and alarm function
 Full support of CO monitor alarm functions
 UL listed panel
 Non-resettable hour meter for recording number of compressor operating hours shall be installed in
the instrument panel
 Compressor oil pressure shall be monitored by a pressure switch and pressure gauge installed in the
instrument panel
 Compressor shall shut down and a fault light illuminate if the compressor’s oil pressure drops below
the factory pre-set value during operation
 Oil pressure switch shall be by-passed during start-up
 Temperature switch shall be supplied on the discharge line of the final stage of compression.
Compressor shall shut down and fault light illuminate if the final stage discharge temperature
exceeds the tamper-proof set point during operation
 Low oil pressure and high air pressure air shutdown switches shall be equipped with DIN type
connectors
 All wiring shall be encapsulated within a split corrugated type loom. Each wire end connection shall
be crimped and numbered

All fault light shall be installed on the instrument panel, shall be red in color, and labeled
 All instrument panel mounted pressure gauges shall be liquid filled and 2 ½” in diameter
• Purification System
 Purification system shall purify high pressure air to a quality that meets or exceeds the following
requirements:
9 CGA Pamphlet G-7, Compressed Air for Human Respiration
9 ANSI/CGA G-7.1, Commodity Specification for Air, Grade E
9 All other recognized standards for breathing air
 Purification shall be achieved by mechanical separation of condensed oil and water droplets,
adsorption of vaporous water by a desiccant, absorption of oil vapor and elimination of noxious
odors by activated carbon and conversion of carbon monoxide to respirable levels of carbon dioxide
by catalyst
 The high pressure purification chambers shall have a working pressure of 6000 PSIG
 System shall utilize replaceable cartridges
 Replacement of the cartridges can be done without disconnecting system piping