Book 35392877 (1/01)
30
( )
36518066
Normally, regulation requires no adjusting, but if prop-
er adjustment is lost, proceed as follows:
Note: Refer to general data for machine rated speeds
and pressure.
Before Starting Unit:
1. Atop separator tank cover at pressure valve, loosen
locknut counterclockwise. Turn adjustment screw and
locknut counterclockwise until no tension is felt at the
screw. turn screw clockwise one full revolution.
After Starting Unit:
2. Allow unit to warm up. Then at control panel, push
“Service Air” Button, if equipped.
3. Open and adjust service valve (on outside of the
unit) to obtain the rated operating pressure on the dis-
charge pressure gauge.
Note: If the rated operating pressure cannot be main-
tained with engine at full load speed and rod (A) of air
cylinder (B) fully retracted, turn regulator adjustment
screw clockwise until throttle airm (C) moves against
full speed governor stop (D).
4. Insure that pressure is maintained at rated
pressure, then turn regulator adjustment screw
counterclockwise until throttle arm (C) just begins to
move.
Note: Turning regulator adjustment screw clockwise
will raise pressure at full speed.
5. Close service valve (engine will slow to idle speed).
Loosen jam nut (E) on rod (A). Rotate rod (A) to adjust
speed to obtain idle rpm.
6. If necessary, repeat steps 3 and 4.
7. At pressure regulator, tighten lock nut.
8. Limit full load engine speed by loosening jam nut (F)
and (G) and rotating rod (H). When proper speed is
reached, tighten jam nuts.
9. To obtain maximum CFM at any pressure between
80 PSI (550kPa) and the rated operating pressure,
turn adjustment screw of pressure regulator to obtain
desired discharge pressure at full load engine speed.
Always lock pressure setting of adjusting screw.
