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High vacuum pumps, exhausters and blowers operating manual
30
21 Speed of motor rotation is excessive.
Check the rotation speed. Check the electrical
connection and correct it, if necessary.
Qualified technician
22 Exceeding quantity of lubricant in the casing
Drain any excess lubricant, restoring the correct
level.
Qualified technician
23 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
24 Intaked gas temperature too high.
Check that the suction conditions are within the
established parameters (see 3,1,2). Correct, if
necessary.
Qualified technician
25 Too high machine-room temperature.
Machine-room has to be appropriately ventilated
to dissipate the produced heat. If ventilation is
deficient, correct it.
Operator
27
Frictions inside the blower/booster.
Stop the machine and rotate slowly
by hand. If there is friction or contact between the
parties, call assistance.
Assistance
28 Rotors out of phase after seizure.
Stop the machine and rotate slowly
by hand. If there is friction or contact between the
parties, call assistance.
Assistance
29 The contact of rotors is caused by fouling.
Stop the machine and rotate slowly
by hand. If there is friction or contact between the
parties, call assistance.
Assistance
30 The contact of rotors is caused by oxidation.
Stop the machine and rotate slowly
by hand. If there is friction or contact between the
parties, call assistance.
Assistance
31
Bearings or gears deterioration is caused by
lack of lubricant.
Stop the machine and rotate slowly
by hand. If there is friction or contact between the
parties, call assistance.
Assistance
32 Blower/booster damage is caused by seizure.
Stop the machine and rotate slowly
by hand. If there is friction or contact between the
parties, call assistance.
Assistance
33 OR seal damaged.
Check the O ring integrity and replace it, if
necessary.
Qualified technician
34 Damaged lip-seal on shaft.
Check the leak is on shaft and, if necessary,
replace the radial shaft seal with an efficient one.
Qualified technician
35 Insufficient preloading of mechanical seal.
Check the seal preloading and reset it, if
necessary. Call assistance if the leaks remain.
Qualified technician
36 Damaged mechanical seal.
Check if mechanical seal is damaged. Call
assistance, if necessary.
Assistance
37
Primary pump oil sucked during shutdown
phase.
Modify the system to prevent the oil (or other
liquid) suction from the primary pump, during the
shutdown phase.
Qualified technician
38 No airtight plugs or seals.
Pick out the damaged external tightness
elements and replace them.
Qualified technician
39 Damaged internal tightness organs.
Stop the machine and call assistance.
Qualified technician
40 Clogged vent plugs.
Clean or replace vent plugs.
Qualified technician
41 Degraded silencers.
Replece the degraded silencer components.
Qualified technician