6 Commissioning/Start-up/Shutdown
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Multitec A SX
6.2 Operating limits
DANGER
Non-compliance with operating limits for pressure, temperature and speed
Explosion hazard!
Hot or toxic fluid may escape!
▷
Comply with the operating data indicated in the data sheet.
▷
Avoid prolonged operation against a closed shut-off element.
▷
Never operate the pump at temperatures exceeding those specified in the data
sheet or on the name plate unless the written consent of the manufacturer has
been obtained.
6.2.1 Ambient temperature
Observe the following parameters and values during operation:
Table 8:
Permissible ambient temperatures
Permissible ambient temperature
Value
Maximum
40
℃
Minimum
on request
CAUTION
Operation outside the permissible ambient temperature
Damage to the pump (set)!
▷
Observe the specified limits for permissible ambient temperatures.
6.2.2 Frequency of starts
DANGER
Excessive surface temperature of the motor
Explosion hazard!
Damage to the motor!
▷
In case of explosion-proof motors, observe the frequency of starts specified in
the manufacturer's product literature.
CAUTION
Re-starting while motor is still running down
Damage to the pump (set)!
▷
Do not re-start the pump set before the pump rotor has come to a standstill.
The frequency of starts is usually determined by the maximum temperature increase
of the motor. This largely depends on the power reserves of the motor in steady-
state operation and on the starting conditions (DOL, star-delta, moments of inertia,
etc). If the start-ups are evenly spaced over the period indicated, the following limits
can be used for orientation for start-up with the discharge-side gate valve slightly
open:
Table 9:
Frequency of starts
Motor rating
[kW]
Maximum No. of start-ups
[Start-ups/hour]
up to 45
10
more than 45
5
Summary of Contents for Multitec A SX
Page 1: ...Sprinkler Pump Multitec A SX Installation Operating Manual ...
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