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High vacuum pumps, exhausters and blowers operating manual
27
9.2
– TROUBLE SHOOTING EXHAUSTERS OR AC
PROBLEMS
LIST OF POSSIBLE CAUSES
Vain or scarce performance, insufficient outlet pressure.
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 17
Excessive performance, outlet pressure higher than expected.
3, 7, 13, 14
High power absorption.
3, 4, 5, 7, 8, 9, 13, 14, 15, 16, 19, 20
Raised noise and high vibrations.
3, 4, 13, 14, 20, 21, 22, 23, 24, 25, 29
Overheating.
1, 2, 3, 13, 14, 15, 16, 17, 18, 19, 20
Nonfunctional seal system.
15, 26, 27, 28
CAUSES
REMEDY
PERSONNEL
1
Too small diameter of pipes.
Replace piping with larger diameter
ones.
Qualified technician
2
Obstructed piping.
Remove the obstructions.
Operator
3
Not correctly adjusted valve.
Adjust the valve (see 5,2).
Qualified technician
4
No airtight machinery.
Look for the leaks and remove them.
Qualified technician
5
Intake filter clogged.
Clean or replace the filter (see 7.2.9).
Qualified technician
6
Speed of rotation lower than expected.
Check tension belts, if they are slack,
regulate (see 7.2.10). Check their
sizing, improve if they are undersized.
Check the ratio of pulleys and correct, if
it is wrong.
Qualified technician
7
Inappropriate Blower/booster sizing.
Check the machine selection and
correct it.
Qualified technician
8
Electric motor improperly connected.
Check the electric connection and the
direction of rotation. If it is wrong,
correct.
Qualified technician
9
Wrong supply voltage.
Check the electric motor supply. If it is
wrong, correct.
Qualified technician
10 Damaged motor.
Check the motor operation. Replace, if
it is damaged.
Qualified technician
11 V- belts degraded.
Check tension V-belts and correct it, if
necessary. Replace V-belts if they are
consumed.
Qualified technician
12 Speed of motor rotation is not sufficient.
Check direction and speed of rotation.
Check the electrical connection and
correct it, if necessary.
Qualified technician
13 Speed of rotation is higher than the target.
Check the ratio of pulleys and correct, if
it is wrong.
Qualified technician
14 Speed of motor rotation is excessive.
Check rotation speed. Check the
electrical connection and correct it, if
necessary.
Qualified technician
15 Exceeding quantity of lubricant in the casing.
Drain any excess lubricant, restoring
the correct level.
Qualified technician
16 Deformation caused by foot tightening.
Check the uniformity of the supporting
surface of feet machinery (within 2
mm). If necessary, use some shims to
correct it.
Qualified technician