Installation
1. Set the mode of operation - The sensor on the pump can be placed on the top for
continuous (always on) operation. A second smart mode can be set by attaching the
sensor to the desired height position slot for automatic operation.
Sensor
Always On Alternate Positions
2. Connect the elbow and adapter - The HydraPump ® Smart Flex has an elbow that
must be connected before the adapter can be attached. Next the outlet adapter can
be attached for connection to a garden hose or other piping. Please see the adapter
connections section for more details. Alternatively, an 1.5” BSP (similar to NHT) hose
fitting can be directly connected to the elbow for maximum performance.
3. Attach the base - the included base will ‘lock’ the pump into place for maximum
stability.
4. Ensure a tight seal - When attaching piping ensure a watertight seal. Remember
that the adapter includes a check valve which can be removed if not needed to
increase performance.
5. Place upright on a hard, flat surface in the water. Do not set the pump directly on
muddy or sandy surfaces since this could cause the inlet screen to clog or the pump
not to function.
6. Plug in pump - Once the pump has been piped and properly put into position, plug
the pump into a 120V GFCI outlet.
7. Power on Self Test - The pump will perform a power on test for about 10 seconds
which may result in water being pumped even though the sensor isn’t telling the
pump water is present. If water is present at the sensor or the pump is in continuous
operation mode the pump should begin to operate as expected.
On-Going Operation
For automatic operation, the pump will operate when the top of the sensor senses water.
Water will continuously pump until the bottom of the sensor is reached. The pump will turn
off after about an additional 10 seconds of pumps. The height of the sensor can be adjusted
by the slots on the outside of the pump. In continuous mode the pump will always pump
whether or not the pump senses water. The pump needs to remain upright at all times in
order for the automatic operation to work correctly.
If the pump is not upright please correct
this or damage may occur to the pump.
Note: In continuous operation mode do not operate the pump without water present for
pumping. This could damage the pump.
Adapter Connections
The pump adapter allows for two types of connections. The first
connection is a ¾” Garden Hose Thread (GHT) connection and the
second is a 1” National Pipe Thread (NPT) standard connection. See
figure to the right:
04
05
Setting UP
INstallation and Operation
Expert TIP:
For improved outlet flow larger hoses or adapters can be attached:
• The GHT connection can be cut off for installations requiring the 1” NPT
connector. The NPT threads can also be removed and a hose clamped to the
remaining connector.
• Alternatively, the entire hose adapter can be unscrewed and a 1½” pipe or hose
can be directly attached to the pump outlet. The 1½” G/BSP type has threads
very similar to NPT thread type. When attaching directly to this please use
plumber’s tape when attaching NPT threaded connectors for a better seal.
Note: When removing the larger connections from the adapter be careful not to
damage the remaining threads.
