IMP Pumps GHN(M)(D)basic(auto) & SANbasic 40-100 flanges - Manual (Page 14)

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4. p
roduct deScription
4.1 Pump description
GHN (basic, auto), GHND (basic, auto): this is a wet-rotor pump, which has a built-in
electric motor with three rotation speeds, representing hand (basic) and automatic (auto)
positions.
The most important advantages of this regulation are:
- energy saving and at the same time operational cost reduction,
- reducing the noise level as a result of excessive flow.
5. i
nStallation
ATTENTION!
Installation and start up should only be carried out by
qualified personnel!
5.1 Pump incorporation
- Pump should be incorporated only in appropriately ventilated premises, protected
against freezing.
- The pump should be incorporated after finishing all welding works and rinsing the
system.
- It is recommended to incorporate stop valves in front of and behind the pump, to prevent
unloading and reloading the system in case of eventual replacement of the pump.
- The pipes should be affixed in a way to prevent burdening the pump with their weight.
The pipes must not be overstretched.
- The pump should be incorporated into piping system with the pump axis 1-1 in
horizontal position (Fig. 3).
- To ensure pumps operation with minimum vibration and noise, the pump should be
incorporated into the straight piping section with lenght of at least 5 -10 x D (D is the
nominal diameter of the pump tube) from the knee.
- Direction of water flow through the pump should match with direction, indicated by an
arrow on the pump casing (Fig.1-POS.1).
- The pump must not be incorporated in to the safety pumping system.
- The nominal tube diameter should not be smaller than the nominal diameter of the
pump.
- The connecting flanges are designed for nominal pressure NP 6/10 (Fig.1 – POS.8).
- GHN (basic, auto), GHNM (basic, auto) pumps have a single hydraulic casing (Fig.1
– POS.8).
- GHND (basic, auto), GHNMD (basic, auto) pumps have double hydraulic casing
(Fig.2 – POS.11), where a tiltable flap is built-in (Fig.2 – POS.10), tilting automatically,
depending on the flow direction of one or another pump.
- Motor rotation direction in hydraulic casing is indicated on the rating plate.
- Pumps shoud be incorporated in places with easy access to enable further
maintenance works.
- The pump should be incorporated in a way to protect the motor and connecting case
against possible dropping water and prevent equipment damage.
- Correct positions during incorporation