Start Up | Operation Manual MIDIDOS E | 19
9. Start Up
NOTICE!
Personal protective equipment as specified by on-site regulations must be worn at all
times while working on the dosing pump!
Goggles
Protective gloves
Protective suit
1. Before starting up the dosing pump all the stages for “Installation” in chapter 7 have
to be carried out. The safety advice must be adhered to.
2. The dosing pump is connected externally to the installed control system.
3. The manual performance setting should be set at maximum stroke length for impro-
ved suction. During the initial suction it should run without contra-flow pressure. For
this purpose the installation of a relief valve on the pressure side of the dosing pump
is recommendable.
4. If a suction aid is installed this has to be filled up with chemical beforehand. In case
the dosing pump does not have suction, loosen the pressure valves and fill the dosing
head with fluid when the pump is turned off. With safe media the dose medium itself
can be used, other a neutral medium that does not disturb the process. (In many
cases water is suitable).
WARNING!
Chemicals can spray out. This may lead to caustic or other burns. Ensure that the line is
not under pressure before disconnecting it.
Mount discharge valve, switch on the dosing pump and allow it to prime again.
5. If a venting facility is integrated in the dosing head or is available as a separate unit,
open it whilst the dosing pump is running until the liquid escapes, then close it. In the
case of effervescent media allow the process fluid to flow continuously (approx. 1 drop
per 1...3 strokes)
6. If the ideal setting has been set, then the desired handling capacity is carried out at
the adjusting knob (see chapter 8). The first time it is filled use the capacity perfor-
mance curves (chapter 5). Depending on the installation and the chemicals used this
value may change and has to be verified under operation conditions.
7. The manufacturer of the dosing equipment is not responsible for damages due to
excessive or low flow rates resulting from faulty dosing pump settings or insufficient
and incorrect installation of peripheral accessories and fittings.
WARNING!
NOTICE!
