Ingersoll-Rand HP600CMH, Operating, Maintenance & Parts Manual

Page: 29 / 44

Book 43212455 (11/03) 29
COMPRESSOR OIL COOLERS
The compressor lubricating and cooling oil is
cooled by means of two fin and tube-type oil
coolers. The lubricating and cooling oil, flowing
internally through the core section, is cooled by
the air stream from the cooling fan flowing past
the core section. When grease, oil and dirt
accumulate on the exterior surfaces of the oil
cooler, its efficiency is impaired.
Each month it is recommended that the oil
coolers be cleaned by directing compressed air
which contains a nonflammable safety solvent
through the core of the oil cooler. This should
remove the accumulation of grease, oil and dirt
from the exterior surfaces of the oil cooler cores
so that the entire cooling area can transmit the
heat of the lubricating and cooling oil to the air
stream.
In the event foreign deposits, such as sludge and
lacquer, accumulate in the oil coolers to the
extent that cooling efficiency is impaired, a
resulting high discharge air temperature is likely
to occur, causing shut down of the unit.
To correct this situation it will be necessary to
clean the coolers using a cleaning compound in
accordance with the manufacturer’s
recommendations.
HOSES
Each month it is recommended that all of the intake
lines to and from the air cleaners and flexible hoses
used for air and oil be inspected.
To ensure freedom from air leaks, all rubber hose
joints and the screw-type hose clamps must be
absolutely tight. Regular inspection of these
connections for wear or deterioration is necessary.
Premature wear of the compressor is ASSURED
whenever dust-laden air is permitted to enter the
compressor intake.
The flexible hoses used in the oil and air lines on
these units are primarily used for their ability to
accommodate relative movement between
components. It is important they be periodically
inspected for wear and deterioration. It is also
important the operator does not use the hoses as
convenient hand holds or steps. Such use can cause
early cover wear and hose failure.