GEA Hilge HYGIA K, Operating Instruction

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2 Safety
2.1 Intended use
Warning!
Non-intended use!
► Pump only media that are specified in the order. The pump has been
specially designed for them.
► Operate the pump only on the electrical grid that was specified in the
purchase order.
2.1.1 Pumped fluids
Use only clean or lightly polluted liquids as pumped fluids as long as they do not
chemically or mechanically attack the pump materials or reduce their strength. If
you want to pump liquids with higher viscosity than that of water, check for
possible overload of the motor.
2.1.2 Minimum flow rate
The pump may not be operated below of a flow rate of Q
min
= 10-15 % Q
opt
.
2.1.2.1 Minimum flow rates in explosive atmospheres
For pumps used in explosive atmospheres according to EU explosion protection
directive 2014/34/EU, the minimum flow rates of the ATEX additional instructions
in Annex B apply.
2.1.3 Connections and piping
The pipe nominal diameters of the system should be equal to or greater than the
pump nominal diameters DNE (suction side) or DNA (pressure side), and the
fittings to the pump should match exactly the type standard of the fixed mating
connection part on the pump. The suction line must be hermetically sealed and
routed such that no air pockets can form. Avoid tight bends and valves directly in
front of the pump. On the suction side, a straight settling section with a minimum
length of 5 times the pipe diameter should be provided. The suction head of the
system must not be larger than the suction head guaranteed by the pump.
2.1.4 Switching frequency
Do not exceed a switching frequency of 15 switching operations per hour.
2.1.5 Types
All information and descriptions in these operating instructions on the use and
handling of the pumps refer exclusively to the standard versions. Special designs
and customised deviations as well as random external influences in the use and
operation are not included in this provision.
2.2 Safety precautions in these operating instructions
Read the safety precautions!
Safety
Intended use
BA.H2A.KYY.001.GB_2
27.02.2018 9