2 - 4 Operation Requirements 704-0212-209 VM Series Maintenance and Safety Manual
Compressed Air Requirements
For machines requiring compressed air, a continuous supply of clean and dry air is
essential for proper machine operation, and must be connected to the machine as
described here.
Compressed Air Specification
Compressed air must conform to the specification:
• 5 CFM at 80 - 100 psi; or
• 0.14 M
3
/min at 6.0 - 8.0 bar.
• Air humidity: 2º C (35º F)
Connecting Compressed Air
The air supply line must meet these requirements:
• An NPT pipefitting must connect the air supply line to the machine.
• A regulator valve must be installed to control the air pressure into the
machine.
• A factory-set pressure switch must be installed to shut off control voltages if
the air pressure falls below the pre-set level.
• A minimum 1.27 cm diameter (1/2 inch, trade size) pipe, or an equivalent
1.99 cm (7/8 inch) diameter air hose supply line is required to provide
adequate air volume.
• A drip leg should be installed in the line ahead of the filter/regulator
assembly. The drip leg will help remove moisture accumulation in the supply,
making the filter last longer.
• Quick coupler type fittings should not be used at the connection to the air
filter/regulator, or within the supply line to the machine.
Anti-Vibration Mountings
Anti-vibration mountings, consisting of a spring-mounted ball bearing, are attached to
each machine. Loose springs and balls are signs of excessive vibration.
Check the mountings before uncrating the machine to ensure that the machine has been
handled properly prior to its arrival. Continue to inspect the mountings on a regular basis.
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