Rico Ric T50-66S Ric T50S Instrucciones página 43

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 on the electric motor casing near the bearing
housing (not on the fan cover), adopting the highest
value.
Legend:
Classification of machines:
Class I = SCL with electric motor of power ≤ 15kW
Class II = SCL with electric motor of power > 15kW
Appraisal zones:
Zone A = SCL with vibration (a) inside this zone
they are considered acceptable for a long-term
duty.
Zone B = SCL vibration (a) inside this zone they
are considered unsuitable for a continuous long-
term 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 indications of a unit malfunction.
Also, compare the measured values with those given in the "SPECIFICATIONS.
B) With the unit stopped and cooled, periodically carry out the following checks:
•
Dust: check and remove deposits from the external surfaces of the unit.
•
Suction filter (if fitted): every 10-15 days, check and clean or replace the filter cartridge. The dirty cartridge will create strong
suction resistance and consequently a higher pressure differential, power absorption and operating temperature.
Danger due to high temperatures!
To limit the formation of surface layers of dust that can affect the natural heat exchange between the unit and the environment, ensure
regular cleaning and removal with suitable equipment.
The suction and/or delivery pipes must not be dirty or clogged! Wear suitable PPE.
14.2 PERIODICAL MAINTENANCE AND TROUBLESHOOTING
Refer to the following section, "OPERATION PROBLEMS", to identify possible critical situations and types of failures.
•
In case of periodical maintenance for cleaning and replacement of some components, as well as in case of failure, it is necessary
to disconnect and remove the machine from the system.
Danger due to electricity.
Before carrying out any operation, make sure the machine is NOT powered.
Risk of injury due to shearing, crushing, entanglement.
During work on the unit there are risks of injury due to shearing, crushing or entanglement!
Therefore it must be carried out by qualified personnel who handle and install the machine, taking the necessary safety measures and
following the instructions given in this manual.
 Druckluftanlagenbau GmbH
RIC T50S – T120S
Effective
vibration
velocity value
[mm/s]
a<1.8
1.8<a<4.5
Tel. +49 ( 0 ) 2151 9931 99 - [email protected]
43 / 120
P4
P3
P2
Effective
vibration
Class I
(≤ 15kW) velocity value
[mm/s]
a<2.8
A
2.8<a<7.1
B
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P1
Class II
(>15kW)
A
B