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Introduction
Davey CS centrifugal pumps are made of 304 grade stainless
steel using stamping and welding technologies which mean
the pumps are compact, lightweight and efficient.
This pump is suitable for pumping clean, clear water with a
temperature between -15°C to +80°C. The maximum working
pressure for this pump is 1,000kPa.
Specifications
Model designation (example) :-
CS 65-50-160/4.0/3
Three phase motor
Motor power (kW)
Nominal dia. of impeller (mm)
Diameter of outlet (mm)
Diameter of inlet (mm)
Series code of pump
Inspection of Pump
Always check on receipt of delivery you have received the
correct pump unit. To identify, see above specifications and
label below. Check correct motor kW & speed on motor
nameplate (attached to motor) prior to installation.
Delivery
Upon receipt the unit should be thoroughly inspected for any
damage sustained during transit. Any equipment damage or
shortfall should be immediately advised to your nearest Davey
office or Davey customer service centre.
Storage
If the unit is not to be installed immediately, it should be stored
in a clean, dry and preferably warm environment. Shafts of
stored motors should be rotated occasionally. Specific vibration
during storage may lead to “brinelling” of the bearings, therefore
motors that are subject to extended storage where vibration
exists, should be fitted with bearing locks.
Installation Location
The pump should be installed as close to the water source as
possible to reduce the length of the suction pipe. You should
always check the pump’s maximum permissible suction lift
from its performance curve.
The pump should be installed in a place where it is well
ventilated where the ambient temperature doesn’t exceed
+50°C.
Foundations
The pump unit should be mounted on a foundation that is
substantial enough to withstand the weight of the unit and
large enough to accommodate all mounting feet so they can
be securely fixed to avoid movement.
Suction Piping
All fittings & suction piping should be free of air leaks.
When a suction lift or long suction lengths are unavoidable,
consideration should be given to over sizing the suction line
to reduce suction losses.
On suction lifts a foot valve will be required, sized equal
to the suction line size. For applications on creek beds
or dams, please install a foot valve and strainer, well
submerged below the surface, to reduce whirlpools and air
inclusion. Air inclusion can result in cavitation reducing the
pump performance and eventually destroying the pump or
its components.
If bends are required, long radius bends should be used.
To help ensure a less turbulent entry into the pump, a straight
length of pipe should be installed between any bends and the
pump inlet. This straight length should be at least 2.5 times
the pump inlet diameter in length. Pipework supports should
be installed to both inlet and outlet pipes to ensure that they
are supported independently of the pump flanges.
Discharge Piping
Discharge piping must be selected of a size that would equal
the discharge of the pump. For long discharge lengths,
consideration should be given to using larger diameter
pipework. Larger size pipes have lower pressure losses for
a given flow rate, and may help reduce the running costs for
your pumping system.
Talk to your nearest Davey Dealer to calculate all system
losses. To avoid air pockets in discharge lines at high points,
vent cocks may be required to release air blocks accumulated
within the system. Air pockets may affect the performance
of the pump. A throttling valve should be installed in
the discharge line to ensure the pump works within the
performance curve.
Summary of Contents for CS Series
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