Pentair AERMOTOR VNA Serie Manual Del Usuario página 12

Maintenance
Be Careful That ...Does Not Damage
Motor Shaft Shoulder... Seal Face
Ceramic
Carbon
Face
Face
Figure 19: Protect Seal Faces
Gases
rise to
surface
Ejector
Pipe strap or
wire to hold
pipe sleeve
Tail
pipe
Foot
valve
Pipe
sleeve
Pipe
cap
Figure 20: Gas/Air Control in Well
HOW TO HANDLE A GASEOUS WELL
In some areas well water contains gases which must be allowed to escape
before the water is used. To deliver gas-free water suspend a pipe, closed
at the bottom and open at the top, so that it surrounds the suction pipe
inlet. (See Figure 20). Since the gases rise in the well casing, the water
sucked down through the pipe and into the suction pump is free of gas.
This type of well must be vented to the outside of any enclosure.
AIR CONTROL IN FLOWING WELLS
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Flowing wells or wells with little or no drawdown, could create a special
problem in air control in the operation of your standard tank system. In
such cases, a pre-charged tank (which needs no air control) is recom-
mended.
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