Motor Maintenance; Control System Adjustment - Sullair E900H User Manual

SECTION 6

6.12 MOTOR MAINTENANCE

1. The motor should be inspected periodically
for unusual noise or vibrations. This can be
a sign of bearing damage or failure.
2. The motor surface should be kept dry and
clean for most efficient cooling. The fan inlet
should be kept free from obstructions.
3. Bearings shall be lubricated every 2000
hours of operation with UNIREX N2. Refer-
ence the motor nameplate for grease
amount. If bearing overheating or grease
degradation is found, the grease should be
changed immediately.
4. The motor heater should be operated in
extremely damp environments or during long
periods of storage. Refer to Section 5.5 on
page 37 for details.
6.13 CONTROL SYSTEM
ADJUSTMENT
Prior to adjusting the control system it is necessary to
determine the desired operating pressure range as
well as the maximum operating pressure. The
maximum operating pressure must not exceed the
maximum operating pressure per the serial
nameplate.
DIFFERENTIAL PRESSURE REGULATOR
ADJUSTMENT
Refer to Figure 6-6. The differential pressure
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
counterclockwise to decrease the setting. 1 psi
above the full load rated pressure of the compressor,
the inlet regulator should allow pressure to flow into
the unload chamber of the inlet valve. Cycle the
Control System several times and recheck all
pressure settings.
P
When running with the compressor loaded, adjust
the pressure reducing regulator to maintain 70 psig /
4.8 bar signal to open the inlet valve.
S
The coupling is a jaw type in shear. If the elastomeric
(rubber) element requires replacement due to wear
or damage, order a replacement element and
perform the following steps:
1. Remove the coupling guard
2. Loosen the retaining screw located on the
3. Unwrap the coupling element from the cou-
4. Install the new element by wrapping it
to increase or
5. Reinstall the outer sleeve and secure by
6. Reinstall the coupling guard.
02250203-986 R01
E900H USER MANUAL
Figure 6-6: Pressure Regulator
R R
RESSURE EDUCING EGULATOR
C M
HAFT OUPLING AINTENANCE
outer sleeve. Slide the sleeve to one side,
exposing the coupling.
pling jaws.
around the jaws, engaging the cogs on the
element into the jaws.
tightening the two screws to 45 in-lbs / 5 Nm.
45