Special Maintenance; Maintenance Chart - Ingersoll Rand VTR20 Manuel De Maintenance

SPECIAL MAINTENANCE

In addition to the maintenance intervals given above, the Oil-Less compressor has some
additional maintenance requirements for rings, drive sets, and shaft bearings. These
intervals are given in Figure 1-4.
Period of Time
Every 10,000 Hours (reading from
hourmeter)
Or
3 Years
Every 20,000 Hours (reading from
hourmeter)
Or
3 Years
The compressor must not be lubricated with any greases or oils because all bearings have
permanently sealed special lubrication and the sliding surfaces run dry on alloyed PTFE Rings.
GENERAL MAINTENANCE NOTES:
MOTOR LUBRICATION: Long time satisfactory operation of an electric motor depends in large
measure on proper lubrication of the bearings. Bearing grease will lose its lubricating ability
over time, not suddenly. Refer to the motor manufacturer's instructions for the type of
grease and lubrication intervals.
PRESSURE RELIEF VALVE: The pressure relief valve is an automatic pop valve. Each valve is
properly adjusted for the maximum pressure of the unit on which it is installed. If it should
pop, it will be necessary to drain all the air out of the tank in order to reset properly. Do not
readjust.
TANK DRAIN VALVE: Drain valve is located at bottom of optional tank. Open drain valve daily
to drain condensation. Do not open drain valve if tank pressure exceeds 25 PSIG. The
automatic tank drain equipped compressor requires draining manually once a week.
PRESSURE SWITCH: The pressure switch is automatic and will start compressor at the low
pressure and stop when the maximum pressure is reached. It is adjusted to start and stop
compressor at the proper pressure for the unit on which it is installed. Do not readjust.
BELTS: Drive belts must be kept tight enough to prevent slipping. If belts slip or squeak, see
V-belt maintenance in preceding section.
If belts are too tight, overload will be put on motor and motor bearings.
COMPRESSOR VALVES: If compressor fails to pump air or seems slow in filling up tank,
disconnect unit from power source, remove valves and examine. Should damage be found
to the valve reeds, complete valve must be replaced. Care must be taken that valves are
replaced in exactly the same position and all joints must be tight or the compressor will not
function properly. When all valves are replaced and connections tight, close hand valve at
tank outlet for the final test. Valve gaskets should be replaced each time valves are
removed from pump.

MAINTENANCE CHART

Check Item
Piston Rings, Guide Rings
Driving Set (Connecting Rod Big End,
Bearings and Bushings)
Piston Set (Piston with Connecting Rod
small end)
Crankshaft Bearings
Figure 1-4
IF3163 Rev A Page 16
Maintenance Work
Check and replace if necessary(See page
18 for replacement procedure).
Replace –
Consult Factory
Replace
Replace –
Consult factory