FPZ MS Serie Manual De Instrucciones página 39

Legend:
Machine classification:
Class I = SCL with electric motor power < 15 kW
Class II = SCL with electric motor power > 15 kW
Evaluation zones:
Zone A = SCL with vibrations (a) within this zone are considered
acceptable for long-term service.
Zone B = SCL with vibrations (a) within this zone are considered
unsuitable for continuous long-term service. Under these
conditions the machine can be operated for a limited period, until
the opportunity arises for suitable corrective work to be done.
Vibration values exceeding zone B (table of effective vibration speed values) are considered NOT admissible and may cause
damage to the machine and resulting serious injury and even death!
- If any anomalous noises and/or vibrations are detected, these may be a warning that the impeller is about to seize.
Switch off the unit and move away from it immediately!
Variations in normal working conditions (increases in power absorbed, anomalous noise, vibrations, excess overheating of the service
fluid) indicate that the unit is not working correctly.
Also, compare the values measured with those indicated in the "CHARACTERISTIC DATA" table.
B) Routinely carry out the following checks with the unit stopped and completely cooled down:
- Dust deposits: Check and if necessary use suitable
equipment to remove deposits on the external surfaces of
the unit that may impede correct heat exchange.
- Suction filter (if present): every 8-10 days check and if
necessary clean or replace the filter cartridge. In very dusty
environments, change the filter more frequently. A dirty
cartridge creates extensive resistance to suction, resulting
in an increase in: the pressure differential, the power
absorbed, and the operating temperature.
- Check for oil leaks near the joint; if leaks are found
maintenance work must be scheduled to replace the seals.
- Check the condition of the elastic joint in the following
manner:
1. Remove the screws and the joint cover (Fig. 6.2).
2. Rotate the joint manually to make the reference lines
on the elastomer visible.
3. Check the joint and assess its condition after 100 hours or at most 1
month of operation. If no deformations are found, the check can be
repeated every 2000 hours or every 3 months
Deformations are detected by means of two lines marked on the
elastomer, one of which tends to line up with the axis of rotation
depending on the direction of the deformation (Fig. 6.3).
4. Protect the joints again with the joint cover .
In order to limit the formation of surface layers of dust which can reduce natural heat exchange between the unit and the environment,
remove the dust and clean regularly using suitable equipment.
The suction and/or delivery pipes must not be dirty or blocked! Use suitable PPE.
The unit is designed for conveying flammable gas and is sealed.
Monitor the flow rate or other equivalent parameters in order to monitor the integrity of the seals; install the unit in a well ventilated
environment.
ENERGOEKONOM spol. s r.o., Wolkerova 433, CZ-250 82 Úvaly, Czech Republic, Tel.: +420 281 981 055, info@energoekonom.cz, www.energoekonom.cz
Danger resulting from the impeller seizing due to excessive vibrations!
Danger due to high temperatures!
Danger of explosion!
Effective
Class I
vibration speed
(≤ 15kW)
value [mm/s]
a<2.2 A
2.2<a<4.5 B
Fig. 6.2
Fig. 6.3
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Effective
Class II
vibration speed
(> 15kW)
value [mm/s]
a<3.5 A
3.5<a<7.1 B