2. Switch off the motor and make sure the pump set runs down smoothly to a
standstill.
NOTE
If the discharge line is equipped with a non-return or check valve, the shut-off element
may remain open as long as there is some back pressure.
For prolonged shutdown periods:
1. Close the shut-off element in the suction line.
CAUTION
Risk of freezing during prolonged pump shutdown periods
Damage to the pump!
▷
Drain the pump and the cooling/heating chambers (if any) or otherwise protect
them against freezing.
6.1.6 Operating limits
DANGER
Non-compliance with operating limits for pressure, temperature and speed
Hot 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 product temperatures exceeding those specified in
the data sheet or on the name plate.
6.1.6.1 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
See data sheet.
6.1.6.2 Density of the fluid handled
The power input of the pump increases in proportion to the density of the fluid
handled.
CAUTION
Impermissibly high density of the fluid handled
Motor overload!
▷
Observe the information on fluid density indicated in the data sheet.
▷
Make sure the power reserve of the motor is sufficient.
6 Commissioning/Start-up/Shutdown
20 of 36
Trialine / Trialine Z
