Operating instructions B-Series
Version 2.4, En Page 66 of 81 21-10-2005
11.8 Electrical installation
Maintenance work on the electrical installation may only take place after the
shutting off of the power and may only be carried out by personnel authorised
to do so.
Before cleaning electrical appliances check they have a sufficiently high
protection level.
Protection level IP54 means, for example, that the appliance is protected against
dust and splashed water from all directions, but NOT against water jets (IP
description, see section “Technical specifications”).
Only replace defective fusing with original fusing with the specified current intensity.
After each service check the parts of the electrical installation for visible damage and replace if necessary.
11.9 Draining the pump
Opening without
danger:
In the case of pumping volatile and/or dangerous liquids the
dangers of these substances must be taken into account
when opening.
•
Disconnect the pressure and suction line as close as possible to the pump/pump unit
•
Take the necessary measures if the pump/pump unit may/cannot be stopped.
•
Remove the pump/pump unit if possible from the installation, and shut the suction and pressure
line off with blind plugs or flanges. If this is not possible, the back pull-out or front pull-out
system can be used.
•
Allow the pump/pump unit to cool down if the pumped liquid allows this.
•
With liquids that solidify at temperatures lower than the working temperature, it is best to
immediately drain the pump after stopping and isolating the pump/pump unit. Always wear
protective clothing and safety glasses.
•
Protect yourself by means of a protective cover if hot and/or aggressive liquid can spatter out of
the pump while draining.
•
Open the cleaning covers.
•
Remove any drain plugs.
•
Make sure that no liquid arrives in the environment.
•
Rinse the spaces and chambers in the pump housing and intermediate housing. The rinsing of the
pump must be done with the correct cleaning material for the technical properties.
•
Replace the cleaning covers and stopper.
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