Grundfos Fire NKF 150-400, Инструкция по установке и эксплуатации

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14
Fig. 12 Relation between engine output and altitude
5. Installation
5.1 Mounting
5.1.1 Installation site
Place the pump unit in a dry, frost-free and well-ventilated
location.
Allow sufficient clearance around pump and engine to enable
inspection, repair and assembly work.
5.1.2 Foundation
It is advisable to install the pump unit on a concrete foundation
which is heavy enough to provide permanent and rigid support for
the entire pump unit. The foundation must be capable of
absorbing any vibration, normal strain or shock. As a rule of
thumb, the weight of the concrete foundation should be 1.5 times
the weight of the pump unit. The concrete foundation must have
an absolutely level and even surface. In the foundation, install
appropriate anchorage screws to fasten the pump unit.
For the recommended length and width of the foundation, see
fig. 13. Note that the length and width of the foundation must be
200 mm larger than the length and width of the base frame.
The minimum height of the foundation (h
f
) can be calculated as
follows, if the mass of the foundation is assumed to be 1.5 times
the total mass of the pump:
The density (
ρ
) of the foundation is usually taken as 2,200 kg/m
3
.
In installations where noiseless operation is particularly
important, we recommend that you use a foundation with a mass
of up to 5 times that of the pump. The minimum height of the
foundation (h
f
) can then be calculated:
Fig. 13 Foundation
Installation of pump unit
Place the pump unit on the foundation and anchor it with
adequately sized bolts. The entire base frame must be supported.
See figs 14 and 15. In addition, we recommend to fit vibration
dampers under the pump unit. See section
5.1.3 Vibration
dampening .
Fig. 14 Correct installation
Fig. 15 Incorrect installation
TM
0
3
4
717
2
606
Warning
The instructions of VdS must be followed.
Warning
An adequate supply of air for engine combustion
must be ensured, and an adequate removal of
heat and exhaust gases.
Non-compliance or impairment of the ventilation
or exhaust gas system may result in danger of
suffocation.
Caution
The foundation installation must be carried out in
accordance with the following instructions. Non-
compliance may result in functional faults which
will damage the pump components.
0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000
[m]
50
60
70
80
90
100
[%]
P2
0 2000 4000 6000 8000 10000 12000 14000 [ft]
h
f
m
pump
1.5
×
L
f
B
f
δ
concrete
× ×
-----------------------------------------------
=
h
f
m
pump
5
×
L
f
B
f
δ
concrete
× ×
-----------------------------------------------
=
T
M
03
77
74
49
06
T
M
03
77
72
49
06
TM
03
77
73
49
06
h
f
B
f
Lf