Section 6
MAINTENANCE
17
6.1 GENERAL
Before doing compressor maintenance, discon-
nect compressor from power source and lock out
power source. Isolate compressor from line pres-
sure by closing recommended discharge shut-off
valve and releasing all internal pressure from
compressor.
As you proceed in reading this section, it will be
easy to see that the Maintenance Program for the
air compressor is quite minimal yet important. See
instructions for each item in Section 6.6, Parts
Replacement and Adjustment Procedures.
6.2 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 minor
problem has developed which is causing this
excessive loss. See the Troubleshooting Section
(6.7) under Excessive Fluid Consumption for a
probable cause and remedy.
After a routine start has been made, a general
check of the overall compressor should be made to
assure that the compressor is running properly.
6.3 MOTOR BEARING LUBRICATION
Before doing compressor maintenance, discon-
nect compressor from power source and lock out
power source. Isolate compressor from line pres-
sure by closing recommended discharge shut-off
valve and releasing all internal pressure from
compressor.
See Table 1, Motor Bearing Lubrication Schedule. If
lubrication instructions are shown on the motor or in
a separately provided manual, they will supercede
this general instruction.
ES-6 Inboard Motor Bearing
1. Remove 1/8 inch hex plug located at the one
o'clock position as you face the bell housing,
and install grease zerk.
2. Remove 1/8 inch hex plug from seven o'clock
position as you face the bell housing.
3. Using the appropriate grease(I), pump cavity
until grease exits the drain hole port.
4. Run machine for 30 minutes at full operating
temperature before reinstalling drain hole port
plug.
ES-6 Outboard Motor Bearing
1. Remove four fan guard screws and fan guard.
2. Remove bearing drain plug from four o'clock
position on motor end.
3. Using the appropriate grease(I), pump cavity
from the grease zerk at the twelve o'clock posi-
tion full.
4. Re-install fan guard and screws.
5. Run machine for 30 minutes at full operating
temperature before reinstalling drain hole port
plug.
(I) Use Chevron SRI-2 grease when lubricating
motor bearings. Fill the cavity 1/3 to 1/2 full by
repacking or use a low pressure grease gun and
fill through the lubricating provisions on the
motor end bell housing.
6.4 FLUID FILTER MAINTENANCE
Fluid filter has internal bypass. DO NOT SUBSTI-
TUTE.
Replace the fluid filter as recommended in the
Lubrication Guide, Table 3-1 in Section 3.
6.5 COOLER MAINTENANCE
If cooler becomes restricted, use standard spray
Table 1- Motor Bearing Lubrication Schedule
MODEL STANDARD SEVERE EXTREME
CONDITIONS (I) CONDITIONS (II) CONDITIONS (III)
4 kw 3 years 1 year 6 months
5.5 kw 2 1/2 years 10 1/2 months 5 1/2 months
7.5 kw 2 1/2 years 10 1/2 months 5 1/2 months
Motors over
1800 RPM 6 months 3 months 3 months
(I) Eight hours per day, normal or light loading, clean 38ºC maximum ambient.
(II) Twenty-four hours per day operation or shock loadings, vibration, or in dirt or dust at 38ºC to 66ºC ambient.
(III) Heavy shock or vibration, dirt or dust at 38ºC to 66ºC ambient.
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