Differential Pressure Regulator Adjustment; Drive Coupling Installation And Alignment - Sullair LS20TS Operator's Manual And Parts List

Section 7
MAINTENANCE
What you may need to perform
this maintenance:
Replacement filter assembly no.
02250117-782
Open-ended (size 1/4") or adjustable
cresent wrench
Use the following instructions as a guide:
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
ADJUSTMENT
Refer to Figure 7-5
sure regulators are adjusted by loosening the
adjusting screw 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 counterclockwise to decrease the set-
ting.
The unload pressure regulator should be set at 150
psig (10.3 bar) to control the compressor package
during unload only. The inlet poppet valve control
34
PRESSURE REGULATOR
and 7-6. The differential pres-
Figure 7-6 Drive Coupling
A COUPLING HUB
B DRIVE SLEEVE
pressure regulator should be set to control the sys-
tems modulation to the service line desired pres-
sure.
DRIVE COUPLING INSTALLATION AND ALIGN-
MENT
Units mounted through common housing
self-aligning. If alignment is suspect, consult
Service Department.
Figure 7-6 shows layout view of drive sleeve and
coupling hubs.
KEY
are