Grundfos LC 221, Installation And Operating Instructions Manual

Page: 27 / 796

English (GB)
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10.4 Cleaning the level sensor
1. Push the ON-OFF-AUTO selector switch to position OFF ( ).
See section 5.2.2 Control panel .
2. Loosen the screw cap by turning it counterclockwise.
See fig. 35 .
3. Lift the pressure tube carefully out of the collecting tank.
Do not lift it by means of the hose.
4. Check for possible deposits on or in the pressure tube and the
condensate trap underneath the screw cap. See section
5.1.6 Level sensor, Multilift MD, MLD .
5. Scrape off any deposits. If necessary, remove the hose from
the controller, and rinse the tube and hose with clean water at
low pressure.
6. Refit the pressure tube by screwing the screw cap on to the
tank. Reconnect the hose to the controller.
7. Check the sensor by test running Multilift MD, MLD.
Fig. 35 Removing the level sensor
10.5 Contaminated lifting station or components
If Grundfos is requested to service the lifting station, Grundfos
must be contacted with details about the pumped liquid, etc. before
the lifting station is returned for service. Otherwise Grundfos can
refuse to accept the lifting station for service.
Lifting stations which have been in contact with the pumped liquid
must be thoroughly cleaned before they are returned to Grundfos.
Any costs of returning the lifting station are to be paid by the
customer.
However, any application for service (no matter to whom it may
be made) must include details about the pumped liquid if the
lifting station has been used for liquids which are injurious to
health or toxic.
TM
05
05
45
10
11
Warning
If a Multilift lifting station has been used for a
liquid which is injurious to health or toxic, it will
be classified as contaminated.