Operating instructions B-Series
Version 2.4, En Page 64 of 81 21-10-2005
11.2 Preparation
Environment
Because some parts have narrow tolerances and/or may be vulnerable, maintenance must take place in a
clean work environment.
Safety instructions during maintenance, repair and checks:
•
Working on the pump is only allowed when it has been put out of operation.
•
To put an installation out of use follow the procedure described in these operating instructions, for
example the machine may no longer be under pressure and it must have fully cooled.
•
Pumps and pump (units) pumping dangerous media must be cleaned and neutralised beforehand.
•
Protect the drive motor during the whole working time against both inadvertent and unauthorised
switching on.
•
When opening the pump follow all instructions for using the medium involved (for example
protective clothing, smoking ban, etc.).
•
With repairs, in the interest of safety, parts supplied by the supplier or approved by him must
always be used.
•
Modifications to the machine or the application are only possible after consultation with the
suppliers.
•
The reliability of the pump/pump unit is only guaranteed when the pump/pump unit is used for
the application and in the way it was intended on delivery.
•
At the end of the activities all safety devices and protective equipment must again be installed and
made operative.
•
Before restarting the pump/pump unit read the operating instructions through.
11.3 Tools
For maintenance and repair work only use tools that are technically suitable and in good condition. Use
them in the correct way.
11.4 Switching off
When switching off the pump/pump unit always proceed as follows:
•
Switch the motor off.
•
Disconnect the secondary piping (sealing or rinsing liquid).
•
When the congealing of the liquid must be avoided, this must be from removed the pump while
the liquid is still fluid.
•
Close the valve in the pressure line. When a non-return valve is present and there is sufficient
counterpressure in the pressure line, the discharge line valve can remain open.
•
Switch off motor and ensure that the installation smoothly comes to a stop.
•
Disconnect the secondary piping (sealing or rinsing liquid).
•
Close the valve in the suction line.
•
At temperatures below freezing point and/or with longer periods out of use, the pump must be
fully drained and preserved.
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