Flow Direction; Plumbing Considerations For Priming Purposes - Franklin Electric INLINE 400 Installation And Operation Manual

Flow Direction

In VERTICAL installations, the Inline 400 comes standard with the flow direction being from LEFT to RIGHT
when mounted vertically on a wall. In this orientation, you can view the status display and the label (1) is in
front.
The flow direction can be easily changed to RIGHT to LEFT by removing two pump
mounting bolts (2), rotating the pump 180 degrees, and re-installing the two
mounting bolts. There are four mounting lugs on the unit, so you can rotate the
pump in 90° increments (in relation to the mounting bracket) if desired.
It is possible to rotate the control cap. Remove six control cap screws (3) and rotate
the cap in 60 degree increments to place the status display in a viewable orienta-
tion.
NOTE: Be careful when rotating the control cap as there is an electrical cable
attached to it.

Plumbing Considerations for Priming Purposes

The Inline 400 needs to be primed with water before it can function properly. There is an internal check
valve built into the unit that needs to open during priming. This requires that the priming water has an
incoming pressure of 1.5 psi (0.1 bar) minimum. This is especially important if the application involves boost-
ing water out of a shallow cistern. There are two ways to accomplish this in the suction plumbing:
PRIMING DIAGRAM: 1.5 psi (0.1 bar) can be
achieved on the inlet by pouring water through a 3
feet (91 cm) vertical water column. Be sure to keep
the inlet valve closed and open the air-bleed valve
until all air is purged from unit. Close the air bleed
valve.
INSET PRIMING DIAGRAM: Adequate inlet pres-
sure/flow can be achieved on the inlet by connect-
ing a working garden hose to a fitting on the inlet
side of the pump and running water into the pump.
Be sure to keep the inlet valve closed, turn on the
garden hose water supply, and open the air-bleed
valve until all air is purged from unit. Close the air
bleed valve.
1. Shut off valve for priming
2. Priming Inlet line
3. Outlet line
4. Outlet valve
5. Air Bleed Valve (Vent)
6. Add water or connect garden hose (inset
image) here
7. Three feet (91 cm) minimum
6
1
2
7
INSTALLATION
Inline 400 Mounting
3
1
2
6
2
1
3
4
5
9