screws. Torque to 70 ft.-lbs. (94 Nm).
11. Reconnect all piping making sure return line
tubes extend to the bottom or 1/4 in (6mm)
above the bottom of the separator element. This
will assure proper fluid return flow to the com-
pressor.
12. Check the return line strainer before restarting
the compressor (order replacement kit number
02250117-782 if required).
CONTROL SYSTEM ADJUSTMENT
Refer to Figure 6-4. Prior to adjusting the Control
System, it is necessary to determine the desired
operating vacuum range. The following explanation
applies to a typical installation with a desired oper-
ating vacuum of 20 in-Hg. (508mm). This informa-
tion will apply to a vacuum unit with any other oper-
ating vacuum except for the stated vacuum.
The vacuum regulator should be adjusted for the
vacuum at which modulation of gas delivery should
begin. In this case, the vacuum will be 20 in-Hg.
(508mm). The regulator is adjusted by loosening
the jam nut on the end of the cone shaped spring
cover of the vacuum regulator. When the jam nut is
loose, turn the adjusting screw clockwise to
increase or counterclockwise to decrease the set-
ting. Above 20 in-Hg. (508mm), the regulator will
allow atmospheric pressure to flow into the control
chamber of the Sullicon Control. At this time, the
Sullicon Control lever should start to move. If the
vacuum unit is equipped with the optional dual con-
trol, the vacuum switch contacts should open at 23
Figure 6-5 Fluid Return/Sight Glass
*Replacement Filter Assembly P/N 02250117-782 (2 qty)
Section 6
MAINTENANCE
50
Figure 6-4 Sullicon Control
*Replacement kit for Sullicon Control P/N 250020-353. For replacement
of spring, order spring no. 250024-507.
NOTE: For additional information on Sullicon Control parts, consult
Section 7.16 Sullicon Control System. For more information on the
Sullicon Control System, refer to Section 7.5 Air Inlet System.
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