Section 7
MAINTENANCE
46
(271 Nm).
11. Reconnect all piping making sure return line
tubes extend to the bottom or 1/4” (6mm) above
the bottom of the separator element. This will
assure proper fluid return flow to the compres-
sor.
12. Check the return line strainers before restarting
the compressor (order replacement kit no.
02250117-782).
OIL RETURN/SIGHT GLASS MAINTENANCE
Refer to Figure 7-4. The oil return/sight glass sub-
assembly is attached to the separator tank lid.Oil
return/sight glass maintenance should be per-
formed on a routine basis parallel to that of the fluid
filter, or as indicated in the Troubleshooting
Sections (both Supervisor and Maintenance) of this
manual. The maintenance on an oil return/sight
glass is mainly concerned with the condition of the
filter assembly. Order filter assembly no. 02250117-
782, and use the following instructions as a guide.
Always performing maintenance on both oil
return/sight glasses at the same time.
1. Disconnect the tubes at the tops of the sight
glass assemblies.
2. Unscrew male connector (for left-side glass), or
the straight thread tube connector (for right-side
glass) from sight glass/orifice blocks.
3. Remove used filter assembly, and replace with
new assembly.
4. Coat/lubricate the O-rings will silicone grease.
5. Reattach the connectors to the sight glass/orifice
blocks.
DIFFERENTIAL PRESSURE REGULATOR
ADJUSTMENT
Refer to Figure 7-5 and 7-6. The differential pres-
sure regulators are adjusted by loosening the jam
nut on the end of the cone shaped cover of the
pressure regulator. When the jam nut is loose, turn
the adjusting screw clockwise to increase or coun-
terclockwise to decrease the setting.
Above 100 psig (6.9 bar), the spiral valve regulator
should allow pressure to flow into the chamber of
the spiral valve actuator. The spiral valve should
start to rotate at this time.
At approximately 108 psig (7.5 bar), the Sullicon
regulator should allow pressure to flow into the con-
trol chamber of the Sullicon Control. The Sullicon
Control level should start to move at this time. Cycle
the Control System several times and recheck all
pressure settings.
Figure 7-4 Oil Return/Sight Glass
*Replacement Filter Assembly P/N 02250117-782
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