Hydraulic installation
Connecting the dosing head venting facility
22
© Lutz-Jesco GmbH 2014
BA-10103-02-V01
Stepper Motor-driven Diaphragm Dosing Pump
MEMDOS SMART LK
Operating instructions
8.5 Connecting a leakage drain
Lutz-Jesco GmbH dosing pumps are produced to the highest quality
standards and have a long service life. However, some parts are subject
to operational wear. This is the case particularly with the diaphragms that
are continuously subjected to forces during the suction and discharge
strokes and to the effects of the dosing medium.
If a diaphragm ruptures, the dosing medium starts to leak. This leakage is
drained via the leakage opening. On the fl ange of the dosing head, there
are three openings for this purpose. Depending on the alignment of the
dosing pump, the leakage is drained via the downward opening.
Fig. 16: Openings of the leakage drain
NOTICE
Damage to drives due to effervescent media
If a hose is connected to the leakage drain and it is routed back into
the dosing tank, effervescent media can enter the drive and damage
it.
Collect the the leakage in a collecting pan.
As an alternative, you can route the leakage back to to the dosing
tank using a funnel. You should install the funnel at an adequate
distance from the leakage opening.
8.6 Connecting the dosing head venting facility
The dosing heads of the MEMDOS SMART LK 5 and LK 10 have an
integrated dosing head venting unit (except for dosing heads made of
stainless steel).
For the procedure when venting, refer to chapter 11.1.1 „Venting the
dosing pump“ on page 40.
Fig. 17: Dosing head venting facility with hose connection
Perform the following working steps:
6.
Connect a 4/6 hose to the dosing head venting facility.
7.
Route the other end of the hose into the dosing tank or a collecting
tank.
Dosing head venting facility connected.
