Periodical Checks - FPZ SCL R20-MD GOR ATEX Manual De Instrucciones

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Periodical checks

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Periodical maintenance
14.1 PERIODICAL CHECKS
NOTE FOR THE The units in operation should undergo periodical inspections by qualified personnel, in order to prevent failures
USER that can directly or indirectly cause damage.
Danger of burns caused by contact with hot surfaces of the unit!!
When in operation the blowers / exhausters can reach high surface temperatures.
Before carrying out any operation after shutdown allow the unit to cool by waiting at least 20 minutes.
A) With the unit in operation periodically check the following parameters:
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Delivery temperature
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Operating pressure and/or vacuum
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Electric motor current absorption
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Vibration
Measurement of vibration
The measurements for determining the vibration velocity [mm/s] must be done with an electronic vibration meter, at the following places:
Points P1 and P2 (front bearing): place the vibration meter near the front bearing, adopting the highest value.
Points P3 and P4 (rear bearing): place the vibration meter near the rear bearing, adopting the highest value.
P1
P2
Legend:
Classification of machines:
Class I = SCL with electric motor of power
Appraisal zones:
Zone A = SCL with vibration (a) inside this zone they are considered acceptable
for long-term duty.
Zone B = SCL with vibration (a) inside this zone they are considered unsuitable
for long-term continuous duty. The machine can be operated in these conditions
for a limited period, as long as there is the opportunity for a suitable corrective
action.
Danger due to seizing of the impeller caused by excessive vibration.
Vibration values higher than Zone B (table of effective vibration velocity value) are considered NOT permissible and can cause damage
to the machine and therefore serious injury to operators.
- In case of noise and/or abnormal vibration indicating the possibility of seizing of the impeller, move away and turn the unit
off immediately!
Variations in normal working conditions (increases in power absorption, abnormal noise, vibration, excessive overheating of the service
fluid) are signs of a unit malfunction.
Compare the measured values with those given in the "SPECIFICATIONS".
FPZ-MI-R-MD-MOR-GOR-ATEX-15-R00
P3
P4
≤
15kW
46 / 111
P1
P2
Effective vibration
velocity value [mm/s]
a<2.2
2.2<a<4.5
P3
P4
Class I
≤
( 15kW)
A
B