Doosan Ingersoll Rand 7/20, Руководство по эксплуатации и обслуживанию

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MAINTENANCE
38
7/20, P65
Completely drain the receiver/separator system including the piping
and oil cooler by removing the drain plug(s) and collecting the used oil
in a suitable container.
Replace the drain plug(s) ensuring that each one is secure.
NOTE: If the oil is drained immediately after the machine has been
running, then most of the sediment will be in suspension and will
therefore drain more readily.
CAUTION: Some oil mixtures are incompatible and result in the
formation of varnishes, shellacs or lacquers which may be insoluble.
NOTE: Always specify INGERSOLL RAND Pro − Tec
TM
oil for use at
all ambient temperatures above − 23 C.
COMPRESSOR OIL FILTER ELEMENT
Refer to the SERVICE / MAINTENANCE CHART in this section for
service intervals.
RUNNING GEAR WHEEL BEARINGS
Wheel bearings should be packed with grease every 6 months. The
type of grease used should conform to specification MIL − G − 10924.
B A
SPEED AND PRESSURE REGULATION ADJUSTMENT
Normally, regulation requires no adjusting, but if correct adjustment
is lost, proceed as follows:
Refer to the diagram above.
A: Throttle arm
B: Adjusting screw
Start the machine (Refer to STARTING INSTRUCTIONS in the
OPERATING INSTRUCTIONS section of this manual ).
Inspect the throttle arm on the engine governor to see that it is
extended in the full speed position when the engine is running at
full − load speed and the service valve is fully open. (Refer to the
GENERAL INFORMATION section of this manual).
Adjust the service valve on the outside of the machine to maintain
7 bar without the throttle arm moving from the full speed position. If the
throttle arm moves away from the full speed position before 7 bar is
attained, then turn the adjusting screw clockwise to increase the
pressure. Optimum adjustment is achieved when the throttle arm just
moves from its full speed position and the pressure gauge reads 7,2
bar.
Close the service valve. The engine will slow to idle speed.
CAUTION: Never allow the idle pressure to exceed 8,6bar on the
pressure gauge, otherwise the safety valve will operate.