DESMI Pumping Technology A/S
6
Tagholm 1
9400 Nørresundby
– Dänemark
Tlf. nr.: +45 96 32 81 11
Fax +45 98 17 54 99
E-mail:
3. INSTALLATION
3.1 MOUNTING/FASTENING
The pump should be mounted and fastened on a solid base plate with a flat and horizontal
surface to avoid distortion.
The pump must be installed with horizontal shaft and the pump casing discharge side
vertically upwards.
The max. permissible loads on the flanges stated in paragraph 2.2 are to be observed.
When mounting a V-belt pulley on the pump a bore H7 is recommended. To facilitate the mounting
the hub in the V-belt pulley may be heated to abt. 100 °C after which the V-belt pulley is easily lead
over the shaft towards the shoulder. Alternatively, the V-belt pulley may be mounted with a TAPER
LOCK bush.
When dimensioning the V-belt pulley it is important to follow the rules of the DESMI nomograms for
the pump size in question - contact DESMI.
Be careful when fitting the suction line to the pump so that it is absolutely tight, as even small
leakages may impede the priming. When pumping polluted liquids a strainer is necessary. The
strainer must be equipped with a sieve, the passage area of which is to be 3 x the area of the
suction pipe. The mesh size is to be 1-3 mm smaller than the impeller gap of the pump in question.
If the pump is to be driven by a motor via a flexible coupling, motor and pump are to be placed on a
common base plate. The following should be observed:
- Avoid distortion of the base plate.
- Avoid distortion in the piping system.
- Check that pump and motor are aligned correctly.
Below please find 2 proposals for alignment. The deviations mentioned cover a complete revolution
of the coupling. The distance between the coupling halves is to be between 2 and 4 mm.