Xylem IM205 Vortex Series - Manual (Page 14)

12 Vortex Installation, Operation and Maintenance Manual
4. Top bracket, mounted within the wellcover clearance;
5. Switches for start-, stop-and alarm signals;
6. Suspension for switches and power supply cables;
7. Piping, non-return valve, discharge bends, etc.
Check points before operating:
• The guide bars must stand vertical (maximum tolerance 3°).
• The installation angle should be: 10-15º (see Figure 7). If necessary, this angle can be
changed by alteration of the position of the lifting hook on the suspension bracket on
top of the motor (pos. 1). (See bails in accessories.)
• Adjust the start-and stop levels in such a way that the motor does not make more then
20 starts per hour.
• Check that the motor is adequately cooled. The motorhousing should be at least 2/3
submerged for continuous operation at full load (see Hmin.1 Figure 6).
Figure 7
It is good practice, whenever possible, to keep the motor housing completely under water.
For interrupted level controlled operation, less cooling is required. We do not recommend
running the pump with a water level below the top of the volute, so as to avoid air being
drawn in.
Air in the discharge pipes will impair performance.
Check Point Installation
In some applications it is possible that the pump will not work due to presence of air in the
volute.
Lifting the pump a bit (10-20 mm) while running may solve the problem.
Installation - Hard Piped
Hard Piped: semi-permanent fixed wet installation.
Except for the pump the following components are necessary:
1. Pipe, which is fastened to the pump;
1
10-15º
Installation Options (continued)