DeWalt D55270 Guide D'utilisation page 9

Gas Manual 10-5-01 2/10/03 2:31 PM
6 . Once setting is complete hold screw "G" firmly
7 . Hold "G" firmly and tighten nut "H"
PILOT VALVE PRESSURE DIFFERENTIAL ADJUSTMENT
N O T E : Unit can remain running while performing this adjustment
WARNING : A f t e r c o o l e r, pump head, and surrounding parts are
very hot; do not touch. (see the Hot Surfaces identified on page 2)
WARNING - Moving Parts: Keep your hair, clothing and gloves
away from moving parts. Loose clothing, jewelry, or long hair can be
caught in moving parts. Air vents may cover moving parts and should
be avoided as well. Do not remove the protective covers from this
p r o d u c t .
1 . Hold "I" firmly and loosen nut "J"
WARNING : Do not loosen barrel "I" more than 1 revolution as barrel
is subjected to tank pressure and can burst out which can harm the
user or surrounding personnel.
2. Turn barrel "I" clockwise to increase differential or counter clockwise
to decrease differential. (for example: if pressure differential is 100 -
130 psi and 100 - 120 psi is desired, turn "I"
counter clockwise)
NOTE : Too narrow of a differential can cause
chatter of the pilot valve. Increase differential to
eliminate chatter.
3 . Hold barrel "I"
4 . Hold "I" firmly and tighten nut "J"
CHECKING COMPRESSOR PUMP OIL LEVEL
WA R N I N G : A f t e r c o o l e r, pump head, and surrounding parts are very
hot, do not touch. (see the Hot Surfaces identified on page 2)
1 . Ensure Unit is off .
2. Locate unit onto a flat horizontal surface.
3 . Remove knurled filler knob (K) from crankcase.
4 . Insert a clean screwdriver into the crankcase and remove it.
All manuals and user guides at all-guides.com
Page 6
K
6
5 . Look for visual signs of contaminants (water, dirt, etc.) Change
pump oil if contaminants are present.
6 . Oil should not exceed top raised line on side of crankcase (oil will be
even with bottom of threads in crankcase fill port). If necessary fill
with D WA LT synthetic oil.
E
CHECKING SAFETY RELIEF VALVE OPERATION
WA R N I N G : A f t e r c o o l e r, pump head, and surrounding parts are very
hot, do not touch. (see the Hot Surfaces identified on page 2)
1 . Ensure unit is off.
2 . Ensure tanks are empty by looking at tank pressure gage. Drain
tanks if necessary.
3 . Grasp wire ring on safety valve.
4 . Pull and release ring a few times to ensure plunger moves in and
o u t .
CHECKING AIR FILTER ELEMENT
WA R N I N G : A f t e r c o o l e r, pump head, and surrounding parts are very
hot, do not touch. (see the Hot Surfaces identified on page 2)
1 . Ensure unit is off .
2 . Allow unit to cool.
3 . Unscrew filter top from filter base by turning counter clockwise
about 5 degrees.
4 . Separate filter top from base.
5 . Remove element from filter base.
6 . If element needs cleaning, blow out with air. Replace element if
u n s u r e .
7 . Place element back in filter base.
8 . Reconnect filter top to filter base and while pushing in, rotate top
clockwise 5 degrees.
STARTING UNIT
Follow the pre-start and start-up procedures in the operating procedure