Pentair NOCCHI CM Series - Chapter 3 Installation; Electrical Safety During Installation; Suction Line Setup and Priming; Piping and Valve Installation

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CHAPTER 2
INSTALLATION (SEE PICTURE 1  PAGE 73)
CHAPTER 3
LIMITATIONS
• Max. Temperature of pumped liquid
90° C (50° C for model cm 90/22)
• Maximum/minimum ambient
temperature 40°/ 5° C*
• CM - CB series electropumps are not
self-priming. It is advisable to install
it under the level of the water
• If the electropump is to be installed
above the water level then a suction
pipe (2) should be used with a
diameter equal to that of the suction
duct for electropump (1)
• If the height (HA) is over 4 meters use
a tube with a larger diameter
• The suction line should be perfectly
airtight. No elbows and/or slopes
should be present to prevent the
formation of air locks that could affect
the electropump efficiency
• Max.On/off cycles/hour 40 equally
spaced
• Maximum suction height
(recommended) 5 m
(with standing valve)
• A standing valve (3) with filter (4)
should be fitted at about half a metre
below the fluid that has to be pumped
(HI) on one end of the line
• Load losses can be reduced using
delivery piping with a diameter
equivalent or greater than the
electropump mouth(5)
• It is advisable to install a check
valve (6) directly on the delivery line
to prevent the electropump being
damaged by "water hammer"
• A cut-off valve (7) should also be
installed downstream from the check
valve, to facilitate servicing operations
•
Maximum operating pressure
6 bar (mod. 0,5-0,75 HP)
8 bar (for remaining models)
Verify that the electropump never runs without liquids.
WARNING
The electropump cannot be used to move inflammable or dangerous liquids.
WARNING
When installing, please ensure electropump is disconnected from electrical supply.
Protect the electropump and all pipes from bad weather or freezing conditions.
DANGER - ELECTRIC SHOCK RISK
WARNING
Series CM - CB electropumps are suitable to pump clean and slightly cloudy water, without abrasive materials.
The efficiency of a pump with a trimmed impeller is usually lower than that of a pump with the full impeller diameter. The trimming
of the impeller will adapt the pump to a fixed duty point, leading to reduced energy consumption. The minimum efficiency index
(MEI) is based on the full impeller diameter. information on benchmark efficiency is available at
www.europump.org/efficiencycharts
• Piping should be fitted so that
vibrations, when existing, tension and
weight do not affect the pump
• Piping should be routed along
the shortest and straighter track,
avoiding an excessive number of
bends
• Verify that the motor is appropriately
vented
*below 5° C, drain the electropump to prevent failures or damages caused by frost.