1.2 Notes
The symbols and notes below may appear in
Grundfos installation and operating instructions,
safety instructions and service instructions.
Observe these instructions for explosion-
proof products.
A blue or grey circle with a white graphical
symbol indicates that an action must be
taken.
A red or grey circle with a diagonal bar,
possibly with a black graphical symbol,
indicates that an action must not be taken
or must be stopped.
If these instructions are not observed, it
may result in malfunction or damage to the
equipment.
Tips and advice that make the work easier.
2. Product introduction
2.1 Product description
NB, NBG, MTB are non-self-priming, single stage,
centrifugal volute pumps with axial inlet port and
radial outlet port.
NB pumps comply with EN 733.
NBG pumps comply with ISO 2858.
2.1.1 Pumped liquids of NB, NBG
NB, NBG pumps are suitable for clean, thin, non-
explosive liquids without solid particles or fibres. The
pumped liquid must not attack the pump materials
chemically.
2.1.2 Pumped liquids of MTB
DANGER
Flammable material
Death or serious personal injury
‐
The pump must not be used for the
pumping of inflammable liquids, such
as diesel fuel, petrol or similar liquids.
MTB pumps are suitable for industrial machine tool
applications, such as:
•
machining centres
•
cooling systems
•
grinding machines
•
lathes
•
parts cleaning systems.
MTB pumps are designed specifically for the transfer
of liquids containing solid particles. The pumps are
capable of pumping liquids with particles up to 20 mm
in size and a weight percentage of up to 1.5 wt%.
When pumping abrasive particles, a reduced life of
pump parts can be expected.
6
English (GB)
Summary of Contents for NB 80-200/222VAXEF1BESBQQEWX2
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