
MNL- 0345
Page 104
Section A
Base Edition
Ensure that the compressor air intake is supplied with fresh air. The intake air must not contain any
exhaust fumes or flammable vapors such as paint solvents, which may cause an internal fire. Make sure
that the intake air is unobstructed and moisture in the intake air is kept to a minimum. It is important that
units draw in clean air. The quality of the incoming air determines the quality of the compressed air. This
is important even for industrial air, as any incoming fumes will also be compressed and will increase the
toxicity to anyone working with the compressed air.
If a remote control is provided, the unit must be equipped with a clearly visible plate warning the possi-
bility of the unit starting. As an additional measure, anyone starting the unit by remote control must make
sure that no one is checking or operating the unit. For this purpose, a second warning plate should be pro-
vided at the remote control unit.
Observe and maintain an ambient temperature range of 43° to 113° F.
The area in which the compressor unit is installed should be well lit and easily accessible to facilitate ser-
vicing and routine maintenance.
A.4.2.2 Ventilation
During normal compression, heat is generated by the compressor and by the drive motor/engine. For air-
cooled compressor units, this heat needs to be vented away by sufficient ventilation.
A.4.2.2.1 Outdoor Installation
It is recommended that all gasoline and diesel engine driven compressor units be installed outdoors.
Additionally, electrically driven compressor units may be installed outdoors only if enclosed with weath-
erproof enclosure panels.
A.4.2.2.2 Indoor Installation
The best location to install the compressor unit indoors is against an outside wall with a suitably large air
vent in front of the cooling fan. Additionally, it is necessary to position an exhaust opening in the oppo-
site wall, close to the ceiling or in the ceiling.
As a basic rule of thumb, the room should be ventilated sufficiently so as to prevent the ambient room
temperature from exceeding 105° F. Additional heat generating equipment or piping should be avoided or
must be well insulated.
A.4.2.2.3 Natural Ventilation
CAUTION
The inclination values listed in Paragraph 1.4 are valid only if the oil level of the compressor is level with
but does not exceed the upper mark of the oil dipstick or oil level sight glass
AUTOMATIC COMPRESSOR CONTROL
UNIT MAY START WITHOUT WARNING!
Before carrying out maintenance and repair work, switch off at the main switch
and ensure the unit will not restart.