Use Of The Px Series In Horizontal Position - FLYGT PX SERIE Instrucciones De Instalacion Y Uso

en

9. Use of the PX series in horizontal position

The PX series electric pumps can be also used in the horizontal position. For this use, unless otherwise
specified in the order form, Flygt supplies the PX2-4-8 series pump versions with top and bottom flanges
(TB), and the PX16, in-line version, with factory-assembled brackets.
If you own a standard version designed for vertical installation, and you wish to install it in the horizontal
position, a special set of supports can be requested from our sales department.
The brackets can be fitted as follows:
"TB" version:
– Unscrew the 4 adapter/tie-rod anchoring nuts and remove the washers (we recommend not to loosen
the bracket fastening nuts only, since this could damage the adapter and/or the mechanical seal); fit
the adapter-side bracket (the one with only two fastening holes) in the two tie rods, so that, once the
pump has been installed, the terminal board will be on the left side when looking at the pump from the
motor side. Fasten both adapter and bracket using the previously removed washers and nuts.
The nuts must be tightened in cross sequence. For the driving torque, see table 1, page 106.
"R" version:
– Follow the above instructions up to the loosing of the tie-rod nuts, then remove the latter and rotate the
pump body base 90°. Reassemble the tie rods and tighten them as per above instructions.
For the PX16 version this procedure is not necessary. However, make sure that the bracket is fitted in
such a way that the terminal board remains on the left when looking at the pump from the motor side.
For information on the "O" version, please contact our sales department.
– Position the pump horizontally, resting it on the bracket; then install the pump body bracket (with 4 fas-
tening holes) on the base of the pump body, using the bolts supplied with pump.
When following the above instructions both terminal board and fill plug will be on the side (only "TB" ver-
sion for PX2-4-8 and "R" for PX16). If you want the installation to be executed as shown in figs 9 and 10
(page 110), i.e. according to our design plans, the installation is more complicated and should be carried
out as follows:
Procedure for PX 2-4-8 series:
– Remove the two coupling guards using long-nose pliers, exerting light pressure towards the coupling
on one side.
– Unscrew the coupling bolts and remove them with their washers. Separate the coupling from the pump
shaft.
– If is has not come out of its seat in the shaft, slide out the pump shaft/coupling connection pin.
– Remove the 4 screws that anchor the motor flange to the adapter. Now rotate the motor by 90° clock-
wise when looking at the motor fan.
– Tighten the 4 motor/adapter fastening screws, refit coupling and coupling guard following the above
instructions in reverse order. For driving torque see table 1.
WARNING
Procedure for PX16:
– Remove the motor following the PX 2-4-8 procedure, keeping in mind that, with a motor above 11 kW
(size 160) there is a motor connector between the motor flange and the adapter. In this case, to re-
move the motor, loosen the 4 coupling bolts between the flange and the motor connector.
– Now remove the motor, loosen the 4 adapter/tie-rod fastening nuts and remove the washers. Then ex-
tract the outer shell from its seat on the lower pump body and rotate it 90° clockwise when looking at
the pump body from above (so that the drain plug is positioned 180° opposite the fill plug on the pump
body – see fig. 10). Refit the shell in its seat with the help of a plastic hammer taking care not to dam-
age the O-ring on the outer shell.
Refit the adapter in its seat on the shell taking care not to damage the mechanical seal or the O-ring on
the outer shell.
– Fit the adapter-side bracket in the two tie rods on the fill plug side, which now becomes a drain plug.
Fasten both adapter and bracket with the 4 nuts and washers, tightening the nuts in cross sequence.
For the driving torque, see table 1, page 106.
– Reassemble the motor positioning the terminal board opposite the support bracket, or in the most con-
venient position for electrical connection, following the above instructions in reverse order.
– Fasten the pump body support bracket as described in the PX 2-4-8 procedure.
24
Before starting the pump make sure that the liquid end and suction pipe are
completely filled with water (for instructions see PRIMING section in this manu-
al, page 20). To obtain the above conditions we suggest fitting the pipes as
shown in fig. 9 (if a gate valve is fitted on the delivery pipe, the pipes can be
positioned on the same axis).