IMP Pumps GHN(M)(D)basic(auto) & SANbasic 40-100 flanges: GB

GB

5.1.1 Insulation of the pump in cooling/conditioning systems

When using the pump in cooling systems and want to insulate the hydraulic casing, it is

necessarytoimplementdiffusedisolationofthehydrauliccasing.

ATTENTION!

Thehydrauliccasingofthepumpcanbeinsulatedonlytothecleftbetweenthemotor

andthehydrauliccasing.Openingsforcondensatedrainageshouldremainuncovered

and enablethedrainage fromthestator housing.Similarly,the same openingsmust

beuncoveredalsoinheatingsystems,whenonlythermalinsulationofhydrauliccasing

isimplemented(Fig.1,2,POS. 15). Electric motor casing, onwhichtheopeningsfor

condensatedrainagearelocated,undernoconditionshoudnotbeinsulated!

Fig.1Fig.2

5.2 Electrical mains connections

GHN (basic, auto), GHND (basic, auto) pumps are provided with built-in, three

phase electric motor, to be connected with A.C. mains of 3~400 V, 50Hz.

GHNM (basic, auto), GHNMD (basic, auto) type pumps have built-in, single

phaseelectricmotor1x230V,50Hz.

The motor is internally protected with bimetal switch. The electric motor

haveabuilt-in,thermalcutout,thatwillswitchofftheelectricmotorwhenitis

overheated.

Thefuse for isolationofall poles fromthemains should beincorporatedin

accordance with the national electrical installation standards.

ThemotorprotectionswitchIskraMISMS25,SchrackALEAorsimilarswitches

areappropriatefuses.

The connecting wire has to be connected over a cable entry M20 (Fig.1 –

POS.7).

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