Xylem IM043 AQUAVAR Variable Speed Pump Control - Manual (Page 36)

35
vI. Single Pump - Submersible Applications and
Minimum Frequency
It is possible to use the wall mounted version of the AQUAVAR controller with a submersible pump.
*Never attempt to mount an AQUAVAR controller on the pump itself in these applications since the
AQUAVAR controller is not designed to be submerged. The standard distance allowed between the
pump and the AQUAVAR controller is up to 60 feet. If you need a longer connection, be sure to con-
tact your distributor for a drive applied filter.
The submersible pump will often use motor service factor and will overload the AQUAVAR controller
at maximum speed. To avoid this, select an AQUAVAR controller based on the full load amp rating
of the motor and the maximum amps allowed by the AQUAVAR. If you have questions about the
requirements of the submersible pump and which AQUAVAR controller to use, please contact the
AQUAVAR controller distributor or factory applications Goulds Pumps.
The submersible pump can be set for either constant pressure or level control applications as
described in programming section I and section V. Normally, the constant pressure application would
use well pumps or turbines with a steady source of water. Drainage applications would normally use
a sump, effluent or sewage pump.
Minimum Frequency
Many submersible well pumps have a required minimum frequency to keep motor bearings lubri-
cated. To avoid running the motor at lower frequencies, you can program in a minimum. For most
Franklin submersible motors the minimum is 30 Hz so a setting of 35 Hz is good.
Programming
End suction centrifugal pumps may also be used in level control systems for draining
or filling. Multiple pumps end suction or submersible systems may also be used in
level control.
DANgER - BY ELECTROCuTION
DANGER
hazardous voltage
can shock, burn or
cause death.