Wilo 2.0-VE 22-36-52, Инструкция по установке и эксплуатации

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en Installation and electrical connection
18 WILO SE 02/2022
NOTICE
Each pumps could be tested regarding hydraulic features in factory, some water may
remain in them. It is recommended for hygienic purposes, to carry out a rinsing of
the pump before any using with potable water supply.
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The installation and connection dimensions are given Fig. 4.
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Lift the pump carefully by using the integrated hooks rings, if necessary with a
hoist and suitable slings according to the current hoist guidelines.
WARNING
Risk of fall!
Take care to pump fixations especially for the highest pumps whose centre of grav-
ity may lead to risk during pump handling.
WARNING
Risk of fall!
Use integrated rings only if they are not damaged (no corrosion ...). Replace them if
needed.
WARNING
Risk of fall!
The pump must be never carried by using motor hooks: these are only designed to
lift the motor alone.
7.3 Pipe connection ƒ
Connect the pump to the pipes by using appropriate counterflanges, bolts, nuts
and gaskets.
CAUTION
Tightening of screws or bolts must not exceed 80 N.m.
Use of impact wrench is prohibited.
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The circulation sense of the fluid is indicated on the identification label of the
pump.
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Pump must be installed in such a way that it is not stressed by the pipework. The
pipes must be attached so that the pump does not bear their weight.
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It is recommended that isolation valves be installed on the suction and discharge
side of the pump.
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Use of expansion joints may mitigate noise and vibration of the pump.
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As regards the nominal cross-section of the suction pipe, we recommend a cross-
section at least as large as that of the pump connection.
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A check valve could be placed on the discharge pipe in order to protect the pump
against hammer shock.
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For direct connection to a public drinking water system, the suction pipe must also
have a check valve and a guard valve.
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For indirect connection via a tank, the suction pipe must have a strainer to keep
any impurities out of the pump and a check valve.
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For indirect connection via a tank, the suction pipe must have a strainer to keep
any impurities out of the pump and a check valve.
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In case of half flanges pump design, it is recommended to connect the hydraulic
network and then keep out the plastic fixation links to prevent any leakage risk.
7.4 Motor connection for bare-shaft
pump (without motor)
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Remove coupling guards.