General; Daily Operation; Maintenance After Inital 50 Hours Of Operation; Maintenance After First 1000 Hours - Sullair LS-120 series Operators Manual And Parts Lists

7.1 GENERAL

As you proceed in reading this section, it will be
easy to see that the Maintenance Program for the
air compressor is quite minimal. The use of the
service indicators provided for the fluid filter, air fil-
ter and fluid separator, will alert you when service
maintenance is required. When the maintenance
gauge shows red, maintenance for that specific
item is required. See instructions for each item in
Section 7.8, Parts Replacement and Adjustment
procedures.

7.2 DAILY OPERATION

Prior to starting the compressor, it is necessary to
check the fluid level in the sump. Should the level
be low, simply add the necessary amount. If the
addition of fluid becomes too frequent, a simple
problem has developed which is causing this
excessive loss. See the Troubleshooting Section
under Excessive Fluid Consumption for a probable
cause and remedy.
After a routine start has been made, observe the
instrument panel gauges to be sure they monitor
the correct readings for their particular phase of
operation. After the compressor has warmed up, it
is recommended that a general check on the over-
all compressor and instrument panel be made to
assure that the compressor is running properly.
DO NOT remove caps, plugs, and/or other compo-
nents when compressor is running or pressur-
ized.
Stop compressor and relieve all internal pressure
before doing so.
7.3 MAINTENANCE AFTER INITIAL 50 HOURS OF
OPERATION
After the initial 50 hours of operation, a few mainte-
nance requirements are needed to clean the sys-
tem of any foreign materials. Perform the following
maintenance operations to prevent unnecessary
problems.
1. Clean the return line strainer. Refer to
9.13 for strainer location.
2. Clean the return line orifice.

7.4 MAINTENANCE AFTER FIRST 1000 HOURS

After 1000 hours of operation, it will be necessary
to perform the following:
1. Clean the return line strainer. Refer to
9.13 for strainer location.
2. Replace the fluid filter element and gasket.
Figure 7-1 Fluid Filter (P/N 02250054-605)
*Repair Kit P/N 250025-526

7.5 FLUID MAINTENANCE

Drain the sump and change the compressor fluid
using instructions shown in Sections 3.2, 3.3, and
3.4.

7.6 FILTER MAINTENANCE

Replace your fluid filter element and the gasket
under any of the following conditions, whichever
occurs first:
1. As indicated by the maintenance gauge.
2. Every third change.

7.7 SEPARATOR MAINTENANCE

Replace the separator elements when your separa-
tor maintenance gauges show red or after one (1)
year, whichever comes first. The separator ele-
ments must be replaced. DO NOT clean the sepa-
rator elements.
7.8 PARTS REPLACEMENT AND ADJUSTMENT
PROCEDURES

FLUID FILTER MAINTENANCE

Section
Refer to Figure 7-1.
1. Using a strap wrench, remove the old element
and gasket.
2. Clean gasket seating surface.
3. Apply a light film of fluid to the new gasket.
4. Hand tighten new element until new gasket is
Section
seated in the gasket groove. Avoid any nicks,
cuts or pinches to the gasket.
5. Continue tightening element by hand an addi-
tional 1/2 to 3/4 turn.
Section 7
MAINTENANCE
31