Operation
31
6.3.1.2 Stopping the pump
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Press the STOP button (5).
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Wait until no more fluid is pumped.
6.3.1.3 Switching off the pump
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Stop the pump.
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Empty the pump.
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For QF5K-HT and QF5KQcon pumps: Switch the pump off with the main switch (7).
The display switches off.
WARNING
–
The fluid can heat up parts of the pump. You could suffer burns!
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Allow the pump to cool down if necessary.
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Clean the pump.
6.3.1.4 Speed control panel HT
Arrow up (Figure 21 Control panel HT item 3) increases the speed.
Arrow down (Figure 21 Control panel HT item 3) reduces the speed.
The flow rate is shown in the diagram (Figure 1 Performance chart QF5K).
6.3.2 Operation with the frequency converter
The pump is started, controlled and stopped with the external frequency converter.
6.4
Cleaning
The cleaning process must be adapted accordingly depending on the used products and the existing
requirements. The user is responsible for checking the cleaning result.
DANGER
–
Depending on the conditions and frequency of cleaning, it may be necessary to check and
replace the elastomers more frequently.
6.4.1 CIP (cleaning)
The pump chamber is cleaned when the pump chamber is installed on the drive.
DANGER
–
The alkaline solutions used for cleaning are strong. They could cause burns. Wear
protective goggles, protective gloves and safety clothing. Observe the safety data sheet.
WARNING
–
Strong alkaline solutions are pumped when cleaning. They could cause burns in case of
leakages. Make sure that the whole system withstands maximum pressure.
WARNING
–
Cleaning can heat up parts of the pump. You could suffer burns. Do not touch the pump.
Allow the pump to cool down.
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Pre-flush the pump until fluid residues are removed.
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Clean with 0.5 M NaOH (approx. 50°C) at 80% of the maximum speed for 30 min.
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Flush the pump with water afterwards until neutrality is achieved (by measuring the pH value or
conductivity of the flushing water).
6.4.2 SIP (steaming)
The pump chamber is steamed when the pump chamber is installed on the drive.
The pump may not be operated during the SIP process and while it is cooling down.
WARNING
–
Cleaning can heat up parts of the pump. You could suffer burns!
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Only perform this with the pump chamber installed.
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Do not touch the pump.
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Allow the pump to cool down.
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Steam at a maximum temperature of 130°C and not for longer than 30 minutes.
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Allow the pump chamber to cool down slowly.
