Wilo NL-HE Series, Инструкция по установке и эксплуатации

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Installation and electrical connection en
Installation and operating instructions Wilo NL-HE 17
6.4 Setting up the pump by itself
(variant B, Wilo variant key)
When installing a pump by itself, the required coupling guard and baseplate of the pump
manufacturer should be used. In any case, all components must meet the local regulations.
An OSHA compliant coupling guard should be used.
6.4.1 Selecting the motor
Select a motor with sufficient power.
Shaft power < 5 hp 5 hp < P
2
< 15 hp
15 hp < P
2
< 50 hp
50 hp < P
2
Limit value P
2
for
the motor
25 % 20 % 15 % 10 %
Table 3: Motor/shaft power
Example:
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Duty point water: Q = 440 gpm; 115 feet
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Efficiency: 78 %
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Hydraulic power: 16.75 hp
The required limit value for this duty point lies at 16.75 hp x 1.15 = 19.26 hp. A motor with a
power of 20 hp would be the correct choice.
6.4.2 Selecting the coupling
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To establish the connection between the pump with bearing bracket and motor, use a
flexible coupling.
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Select the coupling size according to the recommendations of the coupling manufac-
turer.
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Follow the instructions of the coupling manufacturer.
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After installation on the base and connecting the pipes, check the coupling alignment
and correct it if necessary. The procedure is described in the chapter “Coupling align-
ment”.
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After reaching the operating temperature, the coupling alignment must be checked
again.
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Avoid accidental contact during operation. The coupling should be protected with an
OSHA compliant coupling guard.
6.5 Installing the pump unit on a base
CAUTION
Danger of property and material damage!
A missing foundation or incorrect installation of the unit on the base can lead to a mal-
function of the pump. Incorrect installation is not covered by the warranty.
• Only have the pump unit installed by qualified personnel.
• A professional from the concrete sector must be hired for all base work.
6.5.1 Base
Fig. 5: Installing the unit on a base
The base must be able to support the unit installed on the baseplate indefinitely. The base
must be level to ensure there is no tension on the baseplate or unit. Wilo recommends using
premium, non-shrink concrete of an adequate thickness for manufacturing. This would pre-
vent vibrations from being transmitted.
The base must be able to accommodate the forces, vibrations and impact that occur.
Guidance values for dimensioning the base:
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Approx. 1.5 to 2 x heavier than the unit.
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The width and length should each be about 8 inches greater than the baseplate.
The baseplate must not be strained or pulled down on the surface of the base. It must be
supported so that the original alignment is not changed.
Prepare drilled holes for the anchor bolts. Position pipe sleeves vertically in the base at the
corresponding points. Diameter of the pipe sleeves: Around 2½ x the diameter of the
screws. This allows the screws to be moved in order to achieve their final positions.