D--9--611 Page 16
SECTION 5
MAINTENANCE AND TROUBLESHOOTING
Your DuroFlow blower has been designed, manufac-
tured and tested to precise specifications. Every
DuroFlow blower is backed by over 70 years of proven
performance in the most demanding applications that
modern industry can produce. DuroFlow blowers have
been designed specifically for long, trouble--free
service. Minimal maintenance is required to keep your
DuroFlow blower in top operating condition. Your
attention to the following key points will insure years of
dependable DuroFlow blower performance.
Key Points for Long Blower Life
1.
Use AEON PD Synthetic Blower Lubricant to
assure maximum blower protection.
2.
The oil level must be checked periodically.
3.
Drain and refill the blower with fresh AEON PD
Lubricant every 6000 hours of operation, 1500
hours if using mineral based lubricant.
4.
Clean the breather filters at every oil change or
more often if dust conditions are severe.
5.
Service the intake and in--line filters regularly to
make sure that air flow restriction does not occur
and that foreign material does not enter the
blower.
6.
If the blower is taken out of service for any reason,
be sure to protect all interior surfaces from rusting.
TROUBLE SHOOTING
No matter how well the equipment is designed and
manufactured, there may be times when servicing will
be required due to normal wear, the need for
adjustment, or various external causes. Whenever
equipment needs attention, the operator or service
technician should be able to locate the cause and
correct the trouble quickly by following the Trouble-
shooting Chart given below:
PROBLEM
POSSIBLE CAUSES
SOLUTION
1.
Unit out of time.
1.
Retime rotors. (See page 18.)
2.
Distortion due to improper
2.
Check mounting alignment and
mounting or pipe strains.
relieve pipe strains.
3.
Excessive pressure differential.
3.
Reduce to manufacturer’s recom--
mended pressure or vacuum. Exam--
ine relief valve, re-set if necessary.
4.
Worn gears.
4.
Replace timing gears. (See page 18.)
5.
Worn bearings.
5.
Replace bearings. (See page 18.)
1.
Too much oil in gear case.
1.
Reduce oil level.
2.
Too low operating speed.
2.
Increase blower speed. Check
sheave set
3.
Plugged filter or silencer.
3.
Remove cause of obstruction.
4.
Excessive pressure differential.
4.
Reduce pressure differential
across the blower.
5.
Worn rotors clearances.
5.
Replace rotors. (See page 18.)
6.
Internal contact.
6.
Correct clearances. (See page 18.)
7.
Excessive inlet temperature.
7.
Relocate intake to cooler area.
Knocking and
excessive
mechanical noise.
Excessive blower
temperature.
