IMP Pumps GHN(M)(D)basic(auto) & SANbasic 40-100 flanges - Manual (Page 15)

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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).