6 Commissioning/Start-up/Shutdown
57 of 98
UPA / UPA S
3400.86/17-EN
CAUTION
Delay before re-starting too short
Damage to the motor!
▷
Always observe the specified standstill periods.
To prevent inadmissible heat build-up in the motor, the following max. number of
starts or minimum standstill periods must be complied with:
Table 21:
Frequency of starts and delay before re-starting
Motor size
Max. No. of starts
Min. delay before re-
starting
[Starts/hour]
[min]
DN 100
20
1
UMA 150
15
2
UMA-S 150
15
2
UMA 200
10
3
UMA-S 200
10
3
UMA 250
10
3
UMA-S 250
10
3
UMA 300 - 2 poles
5
6
UMA 300 - 4 poles
5
6
14D - 2 poles
5
6
14D - 4 poles
5
6
6.2.2 Supply voltage
Observe the permissible voltage/frequency fluctuations to DIN EN 60034-1 section A;
V
N
± 5%, f
N
± 2%.
The limits may differ if specified in the order, see order confirmation.
Star point displacement
Operation with displaced star point must not exceed the value V
0
> 0.2 x V
N
and must
be limited to one operating hour.
6.2.3 Immersion depth
Do not exceed a maximum immersion depth of 250 m.
For submergence or larger immersion depths refer to the data sheet or the general
arrangement drawing.
6.2.4 Fluid handled
6.2.4.1 Flow rate of pump sets in VdS-approved sprinkler installations
Due to the special conditions of pump sets in fire protection applications, these
pumps can be operated at up to 1.2 times the maximum flow rate Q
permissible
indicated
on the name plate of the sprinkler.
6.2.4.2 Minimum submergence
NOTE
Special conditions apply to pump sets in VdS-approved sprinkler installations.
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