6 Commissioning/Start-up/Shutdown
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Hya-Duo D FL
6.2 Operating limits
DANGER
Non-compliance with operating limits
Damage to the pump set!
▷
Comply with the operating data indicated in the data sheet.
▷
Avoid operation against a closed shut-off element.
▷
Never operate the pump set outside the limits specified below.
DANGER
Non-compliance with operating limits for the fluid handled
Explosion hazard!
▷
Never use the pump to handle different fluids which might react chemically
with each other.
▷
Never use the pump to handle a flammable fluid with a fluid temperature
above the ignition temperature.
6.2.1 Frequency of starts
To prevent high temperature increases in the motor and excessive loads on the
pump, motor, seals and bearings, the frequency of starts shall not exceed the
following number of starts per hour.
Table 7:
Frequency of starts
Motor rating
Maximum frequency of starts
[kW]
[Starts/hour]
≤ 7,5
20
11 - 22
10
≥ 30
6
6.2.2 Ambient conditions
Observe the following parameters and values during operation:
Table 8:
Permissible ambient conditions
Ambient condition
Value
Ambient temperature
0 °C to +40 °C
Relative humidity
50 % maximum
6.2.3 Maximum operating pressure
CAUTION
Permissible operating pressure exceeded
Damage to connections and seals!
▷
Never exceed the operating pressure specified in the data sheet.
The maximum operating pressure equals 16, 25 or 40 bar, depending on the design
variant.
