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5 Assembly / commissioning
In the containers onto which the dispense heads are mounted, there is already the
dip tube on which the dispense head is mounted. The dip tube is possibly key-coded
according to the liquid in the container and is tightly closed by means of the closure.
Depending on the closure, it can also be closed with a tamper-proof cap. For the
assembly described below, it is assumed that the closure is secured with a tamper-
proof cap.
5.1 Initial commissioning
1. Make sure that the entire system is in a clean environment.
NOTICE
Contamination and debris can restrict the functionality of the entire system
and lead to premature wear of o-rings and seals and thus to leaks. Dust
deposits must be avoided in EX areas in particular, as there is an increased
risk of ignition.
2. Connect the suction line to the liquid connection of the dispense head. The
following must be observed here:
•
The suction line must be connected free of stress and load.
•
The connecting couplings must not be tightened too tight or too loose. Both
can lead to leaks.
•
Please use recommended torque specifications of the respective
manufacturer when tightening nuts and screws.
•
The screw connections must be secured against unwinding.
•
When using flare connections, see also AS flare and assembly instructions.
•
If the suction line is installed horizontally, it should be supported approx. 50
cm away from the dispense head.
•
The vibrations of the fluid pump must not be transmitted to the dispense
head via the suction line.
•
The suction line should be as short as possible. This results in better suction
performance.
