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NM-NMD Rev22 - Operating Instructions
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Follow the routine maintenance schedules and
the promptly replace damaged parts, this will
allows the device to work in the best conditions.
Use only original spare parts provided from Calpeda
S.p.A or from an authorized distributor.
Don’t remove or change the labels placed on
the device.
Do not start the device in case of defects or damaged
parts.
Maintenance operations, requiring full or partial
disassembly of the device, must be done only
after disconnection from the supply.
4.2. Safety devices
The device has an external case that prevents any
contact with internal parts.
4.3. Residual risks
The appliance, designed for use, when used in-line
with the design and safety rules, doesn’t have residual
risks.
4.4. Information and Safety signals
For this kind of product there will not be any signals
on the product.
4.5. Individual protection devices
During installation, starting and maintenance it is
suggested to the authorized operators to consider
the use of individual protection devices suitable for
described activities.
During ordinary and extraordinary maintenance
interventions, safety gloves are required.
Signal
individual protection device
HAND PROTECTION
(gloves for protection against chemical,
thermal and mechanical risks).
5. TRANSPORTATION AND HANDLING
The product is packed to maintain the content intact.
During transportation avoid to stack excessive weights.
Ensure that during the transportation the box cannot
move.
It is not necessary to use any special vehicle to
transport the packaged device.
The transport vehicles must comply, for the weight and
dimensions, with the chosen product (see technical
catalogue dimensions and weights).
5.1. Handling
Handle with care, the packages must not receive
impacts.
Avoid to impact onto the package materials that could
damage the pump.
If the weight exceeds 25 Kg the package must be
handled by two person at the same time.
6. INSTALLATION
6.1. Dimensions
For the dimensions of the device (see technical
catalogue).
6.2. Ambient requirements and installation site
dimensions
The customer has to prepare the installation site in
order to guarantee the right installation and in order to
fulfill the device requirements (electrical supply, etc...).
The place where the device will be installed must fulfill
the requirements in the paragraph 3.2.
It's Absolutely forbidden to install the machine in an
environment with potentially explosive atmosphere.
6.3. Unpacking
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Inspect the device in order to check any
damages which may have occurred during
transportation.
Package material, once removed, must be discarded/
recycled according to local laws of the destination
country.
6.4. Installation
See installation examples, par. 12.3 fig. 1 and 2.
The pumps must be installed with the rotor axis in the
horizontal position and with the feet under the pump.
Place the pump as close as possible to the suction
source.
Provide space around the pump for motor ventilation,
to allow for checking of shaft rota-tion, for filling and
draining the pump and to allow for collection of the
liquid to be removed.
6.4.1. Pipes
Ensure the insides of pipes are clean and unobstructed
before connection.
ATTENTION: The pipes connected to the pump
should be secured to rest clamps so that they
do not transmit stress, strain or vibrations to the
pump.
The inside diameter of the pipe-work depends on the
desired flow.
Provide a diameter assuring a liquid flow not greater
than 1.5 m/s for suction and 3 m/s for delivery.
The pipe diameters must never be smaller than the
pump connection ports.
6.4.2. Suction pipe
The suction pipe must be perfectly airtight and be led
upwards in order to avoid air pockets.
Use an eccentric transition piece to join the suction
connection with a horizontal pipe of larger diameter
(fig. 2).
With a pump located above the water level (suction
lift operation), fit a foot valve with strainer which must
always remain immersed or a check valve on the
suction connection.
With a pump located below water level (inflow under
positive suction head) install a gate valve.
6.4.3. Delivery pipe
Fit a gate valve in the delivery pipe to adjust delivery,
head, and absorbed power.
Install a pressure gauge.
With a geodetic head of over 15 m fit a check valve
between the pump and the gate valve in order to
protect the pump from water hammering.