
CAP881
38
CAUTION
Over greasing is a major cause of bearing and motor failure.
Make sure not to over grease or to introduce any contaminants during
greasing.
8.
Return the unit to operation.
6.11 Fan
Check the fan mounted to the main motor shaft for cracking, bent or loose blades. Make sure that it is
securely mounted and tighten the mounting screws if loose. Replace a damaged fan immediately.
6.12 Motor
The motor in the air compressor requires routine maintenance. Every 1000 hours of operation or six
months, whichever comes first, check that the motor is clean and ventilation openings are clear.
The second area to maintain to insure long motor life is bearing lubrication. Bearing grease will lose its
lubricating ability over time, not suddenly. The type of grease used the temperature of operation, and
the speed of the motor effect the life of the bearing lubrication. You should re-grease the bearings
every 2000 hrs or once a year. Units in severe duty (dusty locations or high ambient temperatures) the
time interval is 1000 hours.
A high quality ball or roller bearing grease with the following characteristics should be used:
Standard Service
Hi-Temperature Service
Soap Type
Lithium
Lithium
Grease Viscosity
SSU at 100
o
F
400 – 550
475 – 525
Worked Penetration
265 – 296
220 – 240
N-H Bomb min hrs for 20
psi drop at 210
o
F
750
1000
Bleeding, max weight % in
500 hrs at 212
o
F
10
3
Rust Inhibiting
Yes
Yes
WARNING
Rotating machinery can cause injury or death. Open main disconnect,
tagout and lockout power supply to the starter before working on the
electric motor
Summary of Contents for SEG-10
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