FLYGT SX 5-15 Series User manual

1
Doc. :ST-SX-SM
First edition date :03/99
Revision date :
Disassembly and Assembly Instructions
SX 5-15 SERIES

2
Doc. :ST-SX-SM
First edition date :03/99
Revision date :
Contents
SX Pump disassembly P. 3
SX Pump assembly P. 12
Head components-Exploded view P. 31
SX Spares-Exploded view P. 32
Electrical Connection P. 33
Electrical Connection with external panel P. 34
NOTES:
- The pump should be serviced by qualified personnel only and after having
been disconnected from the power mains.
- The SX pump components listed in this manual are accompanied by
identification numbers that refer to the drawing on page 32.
- These numbers identify spare parts as listed in our specific catalogue.
- The mechanical seal and gaskets should be replaced each time you
assemble the pump.
- In the event of damage to the head we recommend that you replace it with
the pre-assembled one (contact our Service Center).

3
Doc. :ST-SX-SM
First edition date :03/99
Revision date :
Disassembly
• Place the pump on a clean and
well-lit workbench.
• Loosen the filter fastening screws,
located underneath the pump, and
remove the suction filter (12).

4
Doc. :ST-SX-SM
First edition date :03/99
Revision date :
Disassembly
• Remove the suction flange (5).
• Loosen the impeller fastening hex
screw and remove the impeller (2).
(save the lock tab).

5
Doc. :ST-SX-SM
First edition date :03/99
Revision date :
Disassembly
• Unscrew the three socket head
screws from the head.
• Remove the head as shown in the
picture, using a plastic hammer
and chisel. Be careful not to
damage the head.

6
Doc. :ST-SX-SM
First edition date :03/99
Revision date :
Disassembly
• Remove the outer shell (33).
• Remove the upper cover (7) using
a plastic hammer and chisel. Be
careful not to damage the cover.

7
Doc. :ST-SX-SM
First edition date :03/99
Revision date :
Disassembly
• Loosen and remove the screws in
the terminal board and disconnect
all the wires. Remove the capacitor
(18) found only on the SX 05-07
single-phase versions. (on the SX
11 version, the capacitor is
installed inside the external panel).
• Loosen and remove the diffuser
fastening screws (15).

8
Doc. :ST-SX-SM
First edition date :03/99
Revision date :
Disassembly
• Place the pump in a pan to collect
the oil and remove the gasket (32).
• Remove the diffuser (15).

9
Doc. :ST-SX-SM
First edition date :03/99
Revision date :
Disassembly
• Separate the motor casing (3) from
the pump body (1). Watch out for
oil spills. Extract the fixed part of
the seal (9) from the pump body.
• Extract the oil conveyor (10).

10
Doc. :ST-SX-SM
First edition date :03/99
Revision date :
Disassembly
• Use a screwdriver to prize out the
rotating part of the mechanical seal
(9). Remove the washer
underneath.
• Tap the shaft gently (4) on the head
side, through the hole in the bearing
seat.

11
Doc. :ST-SX-SM
First edition date :03/99
Revision date :
Disassembly
• Slide out the rotor shaft and lower
support. Separate the shaft from the
support and remove the bearing ring
(20) and the seal ring (21).
• Remove the compensation ring (11)
located in the bearing seat.

12
Doc. :ST-SX-SM
First edition date :03/99
Revision date :
Assembly
• View of motor casing with wound
stator. (3)
• Insert the compensation ring (11) in
the bearing seat, inside the motor
casing with wound stator (3).

13
Doc. :ST-SX-SM
First edition date :03/99
Revision date :
Assembly
• Insert the rotor shaft with pre-
assembled bearings (4).
• Insert the lower bearing ring (20)
with the lipped side upwards.

14
Doc. :ST-SX-SM
First edition date :03/99
Revision date :
Assembly
• Insert the seal ring (21) over the
bearing’s lower support (6). During
assembly make sure that the open
side, where the spring is visible, is
turned towards the inside of the
bearing’s lower support.
• With the plastic tap, position the lip
seal ring in its seat in the lower
support (6).

15
Doc. :ST-SX-SM
First edition date :03/99
Revision date :
Assembly
• Insert the bearing’s lower support in
the motor casing with wound stator.
• Using a rubber hammer, gently tap
the bearing’s lower support on
alternate sides to slide it into place.

16
Doc. :ST-SX-SM
First edition date :03/99
Revision date :
Assembly
• Put the mechanical seal’s washer (9)
on the pump shaft.
• Using the seal guide, install the
rotating part of the seal with the
polished side up.

17
Doc. :ST-SX-SM
First edition date :03/99
Revision date :
Assembly
• With the plastic tap, position the
rotating part of the seal in its seat as
shown in the picture.
• After installing the seal, position the
oil conveyor (10) over the seal (9).

18
Doc. :ST-SX-SM
First edition date :03/99
Revision date :
Assembly
• Position the gasket (19) over the
bearing’s lower support.
• Install the fixed part of the seal (9) in
the pump body (1), with the polished
side up. Be careful not to damage it.

19
Doc. :ST-SX-SM
First edition date :03/99
Revision date :
Assembly
• With a plastic tap, slide the fixed
part of the seal into position.
• Carefully position the pump body
(1) on the motor casing with wound
stator (3), and install the diffuser
(15).

20
Doc. :ST-SX-SM
First edition date :03/99
Revision date :
Assembly
• Screw down the diffuser screws
(15) in cross sequence.
(driving torque 5 Nm).
• Install the gasket (32) between the
pump body (1) and the diffuser (15).