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1 Intended use
The pumps and pump units of Fristam pumps are designed for use in the food,
pharmaceutical, chemical and other industries and are individually designed and
manufactured according to customer requirements.
The base materials and all sealing materials were selected according to the
requirements of the pumping medium. The pump may only be used for the medium
for which it was designed (see order-specific document parts in the appendix).
Fristam Pumpen is not liable for any damage resulting from misuse. The risk is borne
solely by the operator.
A more reliable and orderly use of the pump also requires compliance with the
instructions of the "Original operator’s manual and assembly instructions" with regard
to use and operation as well as inspection and maintenance.
Where it is to be expected that an explosive gas atmosphere will occur
occasionally/rarely (zone 1; zone 2 Ex-inside) inside, operation of the pump is
possible with FPC, FZ, FDS (see section 3.1) in the appropriate configuration.
For all other Fristam pump types, the pumps must always be filled with pumping
medium during normal operation (zone 1; zone 2). Deviations from these
specifications of the intended use can be found in the order-related documents.
Pumps that are approved for an occasional occurrence of an explosive gas atmosphere
in the pump interior (Zone1, Zone2; Ex-Inside) must be clearly defined as such in the
order-related documentation or in the additional ATEX operator's manual. In addition to
the ATEX marking, these pumps are marked with an "X" on the rating plate. This "X"
means that important additional conditions for safe use must be observed and adhered
to. These additional conditions are explained in the order-related documents and in the
additional ATEX operator's manual.
For more information, please contact Fristam Pumpen
1.1 ATEX version
The pumps and pump units from Fristam Pumpen, which are used in explosive
atmospheres according to ATEX, are based on the respective standard version and
configured in their constructive design in such a way that their suitability is
guaranteed at all times. Terms for the definition of pump and pump unit can be found
in the type-related "Original operator's manual and assembly instructions".
1.2 Restriction of normal intended use Zone 2 (outside)
The FZ EX side channel pump and FPC EX centrifugal pump with single mechanical
seal must not be used for self-priming, venting the suction pipe, emptying product
pipes and tanks and the area where the pump is pumped out of the vacuum.
This creates the risk of dry running of the sliding pairs and an uncontrolled
temperature increase of the sliding surfaces.
An Ex zone inside the pump does not constitute normal operation of the FZ EX side
channel pump and FPC EX centrifugal pump with single mechanical seal.
