Hydraulic installations
Connecting a leakage drain
20
Stepper Motor-driven Diaphragm Dosing Pump
MEMDOS SMART LB
© Lutz-Jesco GmbH 2014
Operating Instructions
BA-10100-02-V02
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 flange 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. 8-6: Openings of the leakage drain
8.6 Connecting the dosing head venting facility
The dosing heads of the MEMDOS SMART LB 5 and LB 10 have an inte-
grated dosing head venting unit (except for dosing heads made of stain-
less steel).
For the procedure when venting, refer to “Venting the dosing pump” on
page 31.
Fig. 8-7: Dosing head venting facility with hose connection
Perform the following working steps:
1.
Connect a 4/6 hose to the dosing head venting facility.
2.
Route the other end of the hose into the dosing tank or a collecting
tank.
Dosing head venting facility connected.
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 leakage in a collecting pan.
As an alternative, you can route the leakage back to the dosing
tank using a funnel. You should install the funnel at an adequate
distance from the leakage opening.
