KSB CHTRa, Инструкция по установке и эксплуатации

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6 Commissioning/Start-up/Shutdown
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CHTRa
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.
NOTE
The values indicated for the frequency of starts apply to the pump only.
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). Observe the manufacturer’s instructions.
▪ The permissible number of start-ups per day is 25.
▪ If the pump is fitted with a balance disc without lift-off device: max.15 starts per
day.
▪ In systems with more than one pump ensure an even distribution of the pump
operating hours (pump changeover).
6.6.2 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 15: Permissible ambient temperatures
Permissible ambient temperature Value
Maximum 50 °C
Minimum - 20 °C
For operation at temperatures outside the permissible limits, contact KSB.
Bearing oil temperature The minimum permissible bearing oil temperature when starting the pump depends
upon the quality of oil used:
DANGER
Temperature increase due to insufficient lubrication
Explosion hazard!
Damage to the pump set!
▷ Always observe the minimum permissible bearing oil temperature when
starting the pump.
If lower bearing temperatures are expected, special bearings should be used.
Table 16: Bearing oil temperature
Oil quality Bearing oil temperatures
ISO – VG 32 10 °C
ISO – VG 46 15 °C