PREVENTIVE MAINTENANCE
7. AIR END
Experience has shown that it is extremely difficult to estimate the life expectancy of an air end.
Routine maintenance of the compressor has been proven to maintain the life expectancy of the roller
bearings.
Any noticeable change in the air end's noise level should be carefully investigated as it may indicate the need
for maintenance.
It is strongly recommended that roller bearings be changed, if indicated, before they are totally
damaged.
Failure to do so risks compromise of the remaining (non maintainable) parts of the air end.
8. SERVICE LOG
Following any maintenance to your equipment, always fill in the Service Log on page 63.
NOTES:
Do not clean and reuse filter elements if the number of accumulated operating hours exeeds the prescribed
maintenance interval (as indicated either on the Electronic Interface display or in this Manual).
Routine maintenance can be performed by the end user, but any additional maintenance should be carried
out by a representative of the nearest SCHULZ Authorized - Technical/Distributor.
Operating conditions and demands on the machine may dictate a modification of the maintenance
intercal(s).Maintenance intervals must be reduced to 50% in high demand situations or contaminated
environments. Consult with your SCHULZ Authorized - Technical/Distributor for additional information as
failure to follow these recommendations may cause damage to the compressor and void the Warranty.
PROCEDURE
CHECK FAILURE INDICATING LIGHTS
CHECK OIL LEVEL
CHANGE OIL
REPLACE OIL FILTER ELEMENT/FILTER
CHECK SEPARATOR ELEMENT RESTRICTION
CHECK OIL FILTER RESTRICTION
REPLACE AIR FILTER
AIR FILTER RESTRICTION LEVEL
CLEAN COOLER EXTERNALLY
CHECK OIL LEAKAGE
CHECK SAFETY VALVE
CHECK HOSES CONDITION
FASTEN CONNECTIONS AND SCREWS
CHECK AND FASTEN THE ELECTRIC SWITCH CONNECTIONS
CLEAN COMPRESSOR
CHECK BELT TENSION AND CONDITION
CHECK MOTOR'S BEARINGS (ACCORDING TO ITS
INSTRUCTION MANUAL)
TABLE 4
IMPORTANT
(1) Check the oil level when the compressor is not running (wait until the air and the oil are separated and that
the bubbles (foam) are eliminated, in order to get an accurate oil level checking).
(2) The first time at 300 hours.
(3) Pressure difference on separator element.
(4) Pressure difference on oil filter.
(5) Quarterly.
(6) Change the filter if indicator (item , Figure 18, page 53) shows some restriction.
(7) When use synthetic oil change every 8,000 hours.
(8) Every 2,000 hours when use synthetic oil.
DAILLY WEEKLY EVERY 1,000 h EVERY 3,000 h
(1)
(3) (9)
(4)
(6)
2
ANNUALLY
(7) (10)
(2) (8)
WHEN REQUIRED
(5)
(5)
55