http___bg.grundfos.com_service-support_support-contact_faq_heating-system-filling-water-requirement.html_1.xml
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Указание 2035 на VDI Част 1 е в сила от 2005 г., а Указание 2035 на VDI Част 2 е в сила от 2009 г. Тези указания отразяват утвърдените правила за технологията. Непрекъснатият технически прогрес, както и повишаването на к.п.д. и оптимизацията на енергоефективността означават, че съвременните топлогенератори и отоплителни помпи са конструирани с по-малки допуски в сравнение с миналото. Този напредък на технологиите е довел до повишените изисквания към работните течности в системата, определени с VDI 2035.
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Flanges and seals need to be ordered separately. The type and size of the flanges and seals must be specified when ordering. Grundfos offers numerous speed-controlled pumps that are referred to as ‘E-pumps’ and which come equipped with Grundfos MGE motors with an integrated frequency converter. SP submersible pumps with a Grundfos or other submersible motor can be operated in any position from horizontal to vertical. Possible cause of fault Yes, absolutely. The installation and operating instructions contain basic instructions which must be followed in connection with the installation, operation, and maintenance of the system. If excess temperature protection is not properly connected or bridged... Yes, the pump has an integrated soft start feature in order to reduce start-up current, thus assuring even, continuous acceleration. In the event of a fault, the SQ will perform an unlimited number of restart attempts. In order to protect against frost damage during transport and storage, SP pumps are protected by a water/glycol mixture. De-energise the pump. Remove the screw in the centre of the nameplate. The shaft located beneath this has a groove. Place a screwdriver in the groove and move the shaft in the direction of rotation until you have removed the blockage.