Doosan 12/154, Operation & Maintenance Manual

Page: 79 / 108

MAINTENANCE 75
12/154
LUBRICATION - GENERAL INFORMATION
Lubrication is an essential part of preventive maintenance, affecting
to a great extent the useful life of the compressor. Different lubricants
are needed and some components require more frequent lubrication
than others. Therefore, it is important that the instructions regarding
types of lubricants and the frequency of their application be explicitly
followed. Periodic lubrication of the moving parts reduces to a
minimum the possibility of mechanical failures.
The Maintenance Schedule shows those items requiring regular
service and the interval in which they should be performed. A regular
service program should be developed to include all items and fluids.
These intervals are based on average operating conditions. In the
event of extremely severe (hot, cold, dusty or wet) operating
conditions, more frequent lubrication than specified may be necessary.
All filters and filter elements for air and compressor oil must be
obtained through Portable Power to assure the proper size and
filtration for the compressor.
Compressor Oil Change
These compressors are normally furnished with an initial supply of
oil sufficient to allow operation until the first service interval indicated in
the Maintenance Schedule. If a compressor has been completely
drained of all oil, it must be refilled with new oil before it is placed in
operation. Refer to specifications in the Portable Compressor Fluid
Chart.
If the compressor has been operated for the time/hours indicated in
the Maintenance Schedule, it should be completely drained of oil. If the
compressor has been operated under adverse conditions, or after long
periods in storage, an earlier change may be necessary as oil
deteriorates with time as well as by operating conditions.
An oil change is good insurance against the accumulation of dirt,
sludge, or oxidized oil products.
Completely drain the separator tank, piping, and cooler. If the oil is
drained immediately after the compressor has been run for some time,
most of the sediment will be in suspension and, therefore, will drain
more readily. However, the oil will be hot and care must be taken to
avoid contact with the skin or eyes.
After the compressor has been completely drained of all old oil,
close the drain valves and/or plugs and install new oil filter elements.
Add oil in the specified quantity at the filler plug. Tighten the filler plug
and run the compressor to circulate the oil. Check the oil level. DO NOT
OVERFILL.
NOTE: Some oil types are incompatible when mixed and result in the
formation of varnishes, shellacs, or lacquers which may be insoluble.
Such deposits can cause serious troubles including clogging of the
filters.
Where possible, do NOT mix oils of different types and avoid mixing
different brands. A type or brand change is best made at the time of
a complete oil drain and refill.
CAUTION: In most severe applications such as sandblasting, quarry
drilling, well drilling, and oil and gas drilling, more frequent service in-
tervals will be required to ensure long component life.
WARNING : High pressure air can cause severe injury or death
from hot oil and flying parts. Always relieve pressure before
removing caps, plugs, covers or other parts from pressurized
air system. Ensure that the air pressure gauge reads zero (0)
pressure and ensure there is no air discharge when opening the
manual blowdown valve.
NOTE: Portable Power provides compressor oil specifically
formulated for Portable Compressors and requires the use of these
fluids in order to obtain extended limited airend warranty.