English (GB)
8
4.4 Pump
The pump is a non-self-priming, single-stage Grundfos NKF
standard pump with volute casing. It has an axial suction port and
a radial discharge port with EN 1092-2-compliant flanges.
For technical data see page 27 chapter
.
The impeller diameter can be reduced to customise the pump
performance to a certain duty point. This means that the actual
impeller diameter differs from the standard diameter stated in
sales catalogues, data sheets, etc. The actual impeller diameter
is stated on the pump nameplate.
The NKF pump is equipped with a rubber bellows seal, type
BAQE, with seal faces of metal-impregnated carbon/silicon
carbide. The elastomer parts are of EPDM.
4.5 Engine
The pumps are powered by a stationary 4-stroke diesel engine
from John Deere, Doosan or Lombardini which has been
specially adjusted to the pump drive requirements of Clarke UK
Ltd.
The rated engine power is adapted to the power requirement of
the pumps. The adjustment is made via the engine speed and
consequently this must not be changed. See section
for relationship between the diesel
engines and the individual pumps. Depending on performance,
the engines have a turbocharger and, if necessary, also a charge
air cooler.
The engine is cooled via a heat exchanger in the water-cooled
John Deere and Doosan engines. The coolant is led to the heat
exchanger via a pipe connected to the discharge port of the
pump. The Lombardini engines are air-cooled.
5. Identification
5.1 Pump
5.1.1 Nameplate (pump)
The nameplate shows all important data of the pump. It is
attached to the bearing bracket.
Fig. 4
Nameplate of a NKF pump with EN approval
Caution
The fuel injection pump has been set from
factory, and the setting must not be changed.
T
M
04
98
46
02
11
Pos.
Description
1
Type designation
2
Product number
3
EN approval number
4
Year of construction
5
Rated flow rate Q [l/min]
6
Rated speed n [rpm]
7
Head H [m]
8
Rated engine power [kW]
9
Country of origin
10
Impeller diameter [mm]
11
Max. operating pressure [bar]
12
Pump housing material
13
Manufacturer
14
Approval/standard
15
CE mark
Summary of Contents for Fire NKF Series
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