Manual - vhp300cm
- 28
06/20/00
6.
Install cleaned or new elements in the
reverse order to the above. Tighten wing
nuts firmly and replace cotter pin.
7.
Inspect to ensure that the end cap seals
tightly 360 degrees around the air cleaner
body.
In the event that the filter element must be reused
immediately, compressed air cleaning (as follows)
is recommended since the element must be
thoroughly dry. Direct compressed air through the
element in the direction opposite to the normal
airflow through the element.
Move the nozzle up and down while rotating the
element. Be sure to keep the nozzle at least one
inch (25.4mm) from the pleated paper.
NOTE: To prevent damage to the element, never
exceed a maximum air pressure of 100 psi (700
kPa).
In the event the element is contaminated with dry
dirt, oil or greasy dirt deposits, and a new element
is not available, cleaning can be accomplished by
washing, using the air cleaner element
manufacturer’s recommendations.
NOTE: It is recommended that replacement
elements be installed in the unit. The elements
just removed for cleaning can be washed and
stored as future replacement elements.
In addition, the air cleaner system (housing and
piping) should be inspected every month for any
leakage paths or inlet obstructions. Make sure the
air cleaner mounting bolts and clamps are tight.
Check the air cleaner housing for dents or damage
which could lead to a leak. Inspect the air transfer
tubing from the air cleaner to the compressor and
the engine for leaks.
Make sure that all clamps and flange joints are
tight.
GAUGES
The instruments or gauges are essential for safety,
maximum productivity and long service life of the
machine. Inspect the gauges prior to start-up.
During operation observe the gauges for proper
functioning. Refer to Operating Instructions, for the
normal readings.
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.
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