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HD 1115R
Инструкция по эксплуатации Страница: 19

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HD 1115R
Инструкция по эксплуатации Страница: 19

HAWK HD 1115R — инструкция по эксплуатации насосов: установка и безопасность [19/31]

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HAWK NMT 1820RN (1450 об/мин) [19/31] Installation and assembly

Instructions Manual

Motorpumps

Cod. doc. M.I. EP-18

Issue 0

Page 19 of 31

This Manual remains the property of the Manufacturer; it may not be reproduced or copied, even partially.

 For any other uses than those described in section 2 and section 4.1

 In any other operating conditions than those described in section 2.2

 For pumping liquids that are flammable, toxic, corrosive or with an unsuitable density or temperatures higher than those

specified in the technical data listed in this document or on the product’s specifications label

 For pumping drinking water

 For food uses

 For pharmaceuticals

 In potentially explosive atmospheres (see the specific Hawk product range)

The Manufacturer reserves the right to review the terms of the guarantee if the equipment is used for any

other purpose than those mentioned above.

5 INSTALLATION AND ASSEMBLY

Read this chapter with due care before starting to install the machine.

Failure to install the pumping system correctly can result in injury or damage to property: it is important

to follow all the points below.

The electric pump-motor assembly is constructed by directly coupling the pump crankshaft and the hollow shaft of the motor.

Read the following points carefully:

The pump should be installed horizontally with respect to its base to facilitate optimum lubrication, on an anti-

vibration base.

Check the direction of rotation of the motor and the crankshaft (indicated near the crankshaft): they must be the

same.

The pump’s suction pipe must be proportional to the volume and its diameter must not be smaller than the

suction mouth. It is important there are as few bottlenecks on this line as possible (elbows, T couplings,

reductions, etc...). Each junction on the suction line must be sealed properly with Teflon tape or a similar product

to avoid leaks or air intake (cavitation). Cavitation is the formation of bubbles of steam in the liquid: their

implosion generates abnormal stress, which is very damaging for all pump parts. To safeguard optimum pump

life, avoid the circulation of liquid containing sand or other solid particles as this affects the efficiency of valves,

the plungers and seals.

This can be prevented by fitting an oversized filter on the suction pipe with respect to the pump volume. The

filter should be cleaned regularly.

The delivery pipe must be able to support the operating pressure of the pump. Excessively narrow passages can

result in lance pressure loss.

To prevent injury and damage to the pump, it is essential to fit a pressure control valve and a safety valve to

prevent the pressure accidentally exceeding its operating level. Contact our technical staff before fitting

these valves. To keep the system pressure under control, a pressure gauge should be fitted on the delivery line

with an appropriate bottom scale.

With regard to electrical components, 1.5mm cables (panels for motors up to 4Kw) and 2.5mm cables (panels

for motors up to 7.5Kw) are recommended.

Further assessments should be discussed with the Manufacturer as necessary.

HAWK HD 1115R — инструкция по эксплуатации насосов: установка и безопасность [19/31]

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