4 INSTALLATION INSTRUCTIONS
PAGE
4.0
4 Mounting and Installation
If the NEMO
®
pump was stored and the rotor grease protected:
Remove the grease before installing the stator. Clean the rotor
thoroughly in order to avoid unsuitability of the grease with the
stator material and the pumping medium.
Screw the pump at all fixing points (bearing housing / drive stool,
end stud, support feet) using all fixing bores securely down to the
sub-structure (ground plate, machine frame, foundation etc.).
4.1 Direction of rotation
The direction of rotation of the pump is given on the model plate and in the order
confirmation. The direction of delivery of the NEMO
®
pump is a function of the
direction of rotation.
Changes must be agreed upon and confirmed by the supplier.
4.2 Pressure
If not explicitly confirmed otherwise in the order confirmation, the maximum
permissible pressure (e.g. when turning clockwise) inside the pump
housing (A):
- for models with pump housing of cast iron 6 bar
- for models with welded pump housing 10 bar
The maximum permissible pressures inside the end connection (B) is
a function of the design applied for connections:
- with flange: maximum nominal pressure (e.g. PN 16).
- with threaded internal socket: maximum 25 bar.
- with DIN 11851 "dairy" thread up to DN 100 for one or two stage pumps: max. 12
bar, for multi stage pumps: max. 25 bar.
- for other versions: maximum permissible pressure of the socket connection, but
not more than 6 bar per pump stage, depending on the stator installed.
4.3 Piping system
■ Arrange suction and pressure pipes so that when the pump is not running, the
medium is still present before and after the pump.
Sufficient media should remain inside in order to lubricate the pump during restart.
issued: 25.10.2017 Revision: 11
text no.
04005-1/2
copy to:
IPP - EN - EN_04005_20171025/1 - D8411276 - 4300003998 - 000100 - NPS - 00229929 N 2018-02-21 19:03:25
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