AC6102 Rev 03 14
Item Description
1 Manufacturer
2 CE Mark
3 Type
4 Pump Size
5 Model series
6 Serial number
7 Engine type [engine driven pump units]
8 Motor voltage
9 Frequency
10 Impeller diameter [mm]
11 Rated flow rate [m
3
/hr]
12 Head [m]
13 Power [kW]
14 Speed [RPM]
15 Pump unit weight [kg]
16 Date of manufacture
17 Country of origin
Table 4 Nameplate of a Fire pump unit
6.4 Design detail
6.4.1 Casing
The pump casing is made from Cast Iron or Ductile Iron,
and is an axially-split double suction volute design with the
suction and discharge flanges and mounting feet cast
integrally with the lower casing half.
Tapped and plugged holes are provided for priming, vent,
drain, and gauge connections. The upper casing half can
be removed without disturbing the suction or discharge
piping. Pump flanges are made with ANSI Class 125 or
250 drillings, and come in the following combinations,
[Suction/Discharge]: 125/125; 125/250; and 250/250.
The suction and discharge are on a common centerline in
the vertical direction for all pump model types; and on a
common horizontal centerline for model types 8100, 8150,
and 9100.
6.4.2 Impeller
The impeller is an enclosed double suction type made of
bronze, which is statically and hydraulically balanced. The
impeller is firmly secured to the shaft by a key positioned
by shaft sleeves and both locked in place by shaft sleeve
lock nuts.
6.4.3 Shaft
The shaft is made of AISI 1045 or 4140 steel and of ample
size to operate under load with a minimum deflection.
6.4.4 Shaft sleeves
The shaft sleeves are made of bronze and protect the
shaft from wear and from contact with the pumped liquid.
Shaft sleeves are locked in place by threaded bronze
shaft sleeve nuts. An O-ring is furnished under the sleeve
to prevent leakage.
6.4.5 Stuffing Box
The stuffing box consists of die formed, graphite coated,
synthetic fiber packing rings; and a split type gland to
permit removal and access to the packing. The 8100
stuffing box housing is made of cast iron, and is separate
from the pump casing. The stuffing box housing is drilled
and tapped for drain connections.
6.4.6 Casing Rings
The casing rings are made of bronze and are installed
with an anti-rotation device and designed to restrict
leakage across the ring fit.
6.4.7 Bearings
The bearings are grease lubricated rolling type selected to
carry radial and thrust loads. The outboard bearing is
retained to handle the axial thrust.
6.4.8 Bearing Housings
The bearing housings are bolted to the pump and are
piloted to positive alignment of the rotating element. The
housings provide a fit for the inboard bearing that allows
freedom for thermal expansion while the outboard
bearing(s) are clamped in place in order to take all the
thrust loads and keep the rotating element in its proper
axial location. Openings for adding grease and draining
grease are provided.
6.4.9 Baseplate
The baseplate is welded construction, manufactured from
steel and is sufficiently rigid to support the pump and the
driver.
6.4.10 Coupling
The coupling is of the flexible type. The coupling hubs are
secured to the driver and the driven shafts by a setscrew
located over the key.
6.4.11 Coupling Guard
The coupling guard is made of metal, and meets the
requirements of EN ISO 13857.
6.4.12 Rotation
Pumps have a clockwise or counterclockwise rotation
when viewed from its driven end.
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