KSB MK, Installation & Operating Manual

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6 Commissioning/Start-up/Shutdown
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MK
6.2 Operating limits
DANGER
Non-compliance with operating limits
Damage to the pump set!
▷ Comply with the operating data specified in the data sheet.
▷ Avoid operation against a closed shut-off element.
▷ Never operate an explosion-proof pump set at ambient temperatures or fluid
temperatures exceeding those specified in the data sheet and/or on the name
plate.
▷ Never operate the pump set outside the limits specified below.
6.2.1 Ambient temperature
CAUTION
Operation outside the permissible ambient temperature
Damage to the pump (set)!
▷ Observe the specified limits for permissible ambient temperatures.
Observe the following parameters and values during operation:
Table 7: Permissible ambient temperatures
Permissible ambient temperature Value
Maximum 40 °C
Minimum - 20 °C
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.
To prevent high temperature increases in the motor and excessive loads on the
pump, coupling, motor, seals and bearings, the frequency of starts shall not exceed
20 start-ups per hour (h).
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.