NOTE
After commissioning, increased temperatures may occur at grease-lubricated rolling
element bearings due to the running-in process. The final bearing temperature is
only reached after a certain period of operation (up to 48 hours depending on the
conditions).
7.2.1.1
Warning and cut-out values
As an option, the pump can be fitted with various sensors. If such sensors are fitted,
observe the following warning and cut-out values:
Table 14: Warning and cut-out values
Sensors
Warning value
Cut-out value
Vibrations
12)
for pumps with a drive rating < 200 kW
[mm/s - rms]
6.3
13)
9.5
Vibrations
14)
for pumps with a drive rating > 200 kW
[mm/s - rms]
7.6
15)
11.9
Bearing temperature at the outer bearing ring
[°C]
85
90
7.2.2
Inspection work
DANGER
Excessive temperatures caused by friction, impact or frictional sparks
Explosion hazard!
Fire hazard!
Damage to the pump set!
▷
Regularly check the coupling guard, plastic components and other guards of
rotating parts for deformation and sufficient distance from rotating parts.
7.2.2.1
General information
Check and service all components of the pump set as described in the corresponding
operating manuals provided by the manufacturers.
For the manufacturers’ product literature see other applicable documents.
7.2.2.2
Routine maintenance and inspection intervals
Table 15: Routine maintenance and inspection intervals
Interval
Number of
persons
Time
Maintenance task
Daily
1
6 min.
▪
Check the leakage at the
mechanical seal or the leakage
rate at the gland packing.
Weekly
1
15 min.
▪
Check the pump operation
(inlet pressure, head, bearing
temperature, noises and
vibrations).
12)
To DIN ISO 10816-7, category II, zone A
13)
Within the preferred operating range of 0.7 ≤ Q/Qopt ≤ 1.2 the vibration values of newly commissioned pumps with good
system conditions (piping layout, approach flow at the pump, etc.) are below the boundary of zone A to DIN ISO 10816-7,
i.e. below 3.5 mm/s rms.
14)
To DIN ISO 10816-7, category II, zone A
15)
Within the preferred operating range of 0.7 ≤ Q/Qopt ≤ 1.2 the vibration values of newly commissioned pumps with good
system conditions (piping layout, approach flow at the pump, etc.) are below the boundary of zone A to DIN ISO 10816-7,
i.e. below 4.2 mm/s rms.
7 Servicing/Maintenance
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Omega / Omega V
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