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Commissioning
30
5 Commissioning
Before using for the first time, it might be useful to fill the pump with 0.1 N to 0.5 N NaOH alkaline solution
and allow it to soak in. The soaking time depends on the desired result (e.g. depyrogenisation 10 - 20 hours).
Adapt the flushing and cleaning procedure to the respective application and check the effect by suitable
analytical processes.
6 Operation
6.1
Safety
WARNING
–
The pumped fluid and cleaning products can be dangerous. There is a risk of serious
damage to health by contact. Observe the safety data sheet of the fluid and wear the appropriate protective
equipment.
WARNING
–
The pumped fluid and cleaning products can be hot and heat up parts of the pump. There
is a risk of burns when touching. Allow hot parts to cool down.
Only operate the pump with the pump chamber and housing mounted. Do not operate the pump if the pump
or one of its components is damaged.
6.2
Switching on
WARNING
–
Overpressure can lead to leakages and spillage of the fluid. You could expose yourself to a
dangerous fluid or suffer scalding. Never switch the pump on if the pressure side might be closed.
►
Check the system beforehand - especially for possible leakages and visible damage.
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Open the pressure line.
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Flush the pump thoroughly and condition the pump with a product-compatible solution (e.g. buffer) if
necessary.
6.3
Operation
6.3.1 Control panel QF5KHT
You can operate the QF5KHT pump in 2 ways:
•
Manual operation (speed setting and start/stop) of the pump by the control panel (see chapter Figure 21
Control panel HT on page 27
•
External operation of the pump by means of an analogue signal (4 - 20 mA). The buttons of the control
panel are locked.
6.3.1.1 Starting the pump
Manual operation
See Figure 21 Control panel HT on page 27
►
Press the main switch.
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Press the control source button (6) until the external LED (1) no longer lights.
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Press the arrow buttons (5) to set the desired speed. The desired speed appears as a target value on
the display (2).
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When you have set the desired speed, press the RUN button (4).
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Press the STOP button (5) to stop the pump.
External operation
►
Press the main switch.
►
Press the control source selection button (6) until the external LED (1) lights.
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Signal connector (8-pin plug) 4-20mA =^ 0-1200 rpm + start/stop signal
Note!
The start and stop signal must always be used!