Doosan P185WJD, Operation & Maintenance Manual

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Operating & Maintenance Manual MAINTENANCE
44
Additional separation takes place in the oil
separator element which is located in the top
of the tank.
Any oil accumulation in this separator
element is continuously drained off by means
of a scavenge tube which returns the
accumulated oil to the system.
The life of the oil separator element is
dependent upon the operating environment
(soot, dust, etc.) and should be replaced
every twelve months or 1000 hours.
Scavenge Line
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.
The scavenge line originates at the receiver-
separator tank cover and terminates at the
compressor air-end near the oil filter
element. An orifice check valve is located on
the scavenge tube.
Once a year or every 1000 hours of
operation, whichever comes first, replace the
separator element and clean the scavenge
orifice/check valve.
NOTE: Excessive oil carry-over may be
caused by an oil-logged separator element.
Do not replace element without first
performing the following maintenance
procedure:
1. Check oil level. Maintain as indicated
earlier in this section.
2. Thoroughly clean scavenge line, any
orifice and check valve.
3. Assure minimum pressure valve/orifice is
operational.
4. Run unit at rated operating pressure for
30 to 40 minutes to permit element to
clear itself.
Exterior Finish Care
This unit was painted and heat cured at the
factory with a high quality, thermoset
polyester powder coating. The following care
will ensure the longest possible life from this
finish.
1. If necessary to remove dust, pollen, etc.
from housing, wash with water and soap
or dish washing liquid detergent. Do not
scrub with a rough cloth, pad, etc.
2. If grease removal is needed, a fast
evaporating alcohol or chlorinated
solvent can be used. Note: This may
cause some dulling of the paint finish.
3. If the paint has faded or chalked, the use
of a commercial grade, non-abrasive car
wax may partially restore the color and
gloss.
Field Repair of Texture Paint
1. The sheet metal should be washed and
clean of foreign material and then
thoroughly dried.
2. Clean and remove all grease and wax
from the area to be painted using
Duponts 3900S Cleaner prior to sanding.
3. Use 320 grit sanding paper to repair any
scratches or defects necessary.
4. Scuff sand the entire area to be painted
with a red scotch brite pad.
5. Wipe the area clean using Duponts
3900S.
6. Blow and tack the area to be painted.
7. Apply a smooth coat of Duponts 1854S
Tuffcoat Primer to all bare metal areas
and allow to dry.