Dover PSG MOUVEX A18 User manual

Mounting shaft A18
on AL pump
INSTRUCTIONS 1003-R00 e
Section 1003
Effective September 2014
Replaces New
Original instructions
Your distributor :
Z.I. La Plaine des Isles - F 89000 AUXERRE - FRANCE
Tel. : [phone] - Fax : [phone]
[email protected] - www.mouvex.com

2/6
NT 1003-R00 09 14 Mounting shaft A18 on AL pump e
KIT CONTENTS
Item Part
12414 Front cover bearing
12415 Bushing
12420 Washer
12501 Shaft
12521 Sleeve
12524 Pin
12503 Piston bearing
12504 Spring
12511 Screw
12604 Stationary seal face
12697 Rotating part
12605 Seal
12641 Driver
12642 Screw
12627 Pin
12701 Bearing cage
12703 Bearing
12733 Ring
12705 Bearing cover
12708 Grease nipple
12704 Ring
12706 Screw
12706A Screw
12707 Lip seal
12721 Washer
416 Front cover bearing seal
717 Bearing cage seal

On the pump, disassemble the following parts (see pump
Instructions) :
• Front cover,
• Sleeve,
• Piston,
• Bearing cover,
• Shaft with bearing cage and mechanical seal.
Mounting new front cover bearing
On the front cover, remove screws 417 and their washers
420.
Remove front cover bearing 414 and its seal 416.
Mounting of front cover bushing in the new bearing.
Orientate bushing chamfer on the outer side (see scheme
above).
Insert the bushing 12415 in the front cover bearing 12414
using a press and a cylinder until bushing 12415 and front
cover bearing 12414 faces are aligned.
NOTICES
Do not add glue or grease.
Effort must be made only on metal liner and not on the car-
bon bushing.
Fit the new front cover bearing 12414 with the seal 416 (a
new seal is supplied with the shaft kit).
Screw and tighten screws 12417 with their washers 12420.
Mounting new shaft
Mounting of piston bearing
Fit bearing 12503 on shaft 12501.
Fit springs 12504 in their housing.
Fit screws 12511.


3/6
NT 1003-R00 09 14 Mounting shaft A18 on AL pump e
Mounting shaft new model on AL pump

Assembly of the bearing
Clean the bearing housing 12703.
Fit the Nilos seal 12733 in its housing.
Fit the bearing 12703 in the bearing cage 12701 by pres-
sing on its outer ring with a press and a tube.
Assembly of new mechanical seal
NOTICE
Mechanical seal components must never be put on
friction faces without protection sheets.
• Assembly of mechanical seal stationary seal face
If necessary, clean the bearing 12703 of its grease.
Clean the housing of seal in the bearing cage 12701.
Fit the seal 12605 in the bearing cage 12701.
Fit the stationary seal face 12604 in the bearing cage
12701, taking care of aligning pin 12627 located in
the bearing cage 12701 with groove on the stationa-
ry seal face 12604.
If necessary, clean friction face with a clean, soft
cloth. Caution not to scratch friction face.
• Assembly of mechanical seal rotating part
Check shaft 12501 surface condition. Rub it down with
thin sand paper if there are scratches on seal rotating
part O-ring place. In particular, it must be check that
there are no scratches parallel to shaft axis.
If necessary, fit the new mechanical seal driver 12641
and its screws 12642 on the shaft 12501, and posi-
tion it so that it cannot move any forward. Fit the
screws 12642 with medium thread lock.
To reduce friction, wet with water or alcohol surfaces
on which O-rings will slip during assembly.
If seal includes FEP coated FKM O-rings, use moun-
ting cone supplied with mechanical seal.
Fit the rotating part 12697 aligning ergots driver 12641
grooves.
If necessary, clean friction face with a clean, soft
cloth. Caution not to scratch friction face.










4/6
NT 1003-R00 09 14 Mounting shaft A18 on AL pump e
Mounting shaft new model on AL pump (continued)

Assembly of the bearing cage
Fit the set bearing cage (12701 - 12703 - 12733 - 12627
and mechanical seal stationary seal face) on the shaft
12501.
NOTICE
As long as bearing cover 12705 is not mounted,
shaft is hold only by the bearing and may fall which
could damage the mechanical seal. To prevent this,
keep holding shaft 12501 and bearing cage 12701 to
limit ball joint movement, for instance by putting it
vertically.
Fit the ring 12704 on the shaft 12501.
If necessary, fill the bearing 12703 with grease (see §
MAINTENANCE in pump Instructions).
Clean the pusher faces of seal 717.
Fit the seal 717 on the bearing cage 12701 (a new seal
is supplied with the shaft kit).
Assembly of bearing cover
Fit the lip seal 12707, lip orientated outside in the bea-
ring cover 12705.
Fit the bearing cover 12705 in the bearing cage 12701.
Fit the screw 12706A.
Insert shaft assembly in the main body 101 positioning
the screw 12706A according to the main direction of
rotation of the pump :
Positions detail
Incorrect positioning will not cause damage, but will lead
to a loss of flow.
Also ensure that the position of the bypass is correct.
The single bypass protects only the pump in only one
direction, but it is reversible. Cap A must be on the intake
side. This must be done before the pump is started for the
first time and revalidated if the pumping circuit changes.
$
Clockwise main direction of rotation
$
Anticlockwise main direction of rotation
Suction
Discharge
5/6
NT 1003-R00 09 14 Mounting shaft A18 on AL pump e
Mounting shaft new model on AL pump (continued)

Fit the screws 12706 and theirs new ridged conic was-
hers 12721 with medium thread lock.
Assembly of piston (origin piston preserved)
Lubricate the friction surfaces of the piston 301 with a
product compatible with the pumped liquid.
Fit the piston 301 on its piston bearing 12503.
Fit the sleeve 12521 on the shaft 12501.
Fit the pin 12524 (until it cannot move any forward) taking
care not to damage the sleeve.
NOTICE
To avoid damaging mechanical seal during this ope-
ration, shaft must be supported by a block (select a
non-hard material to avoid damaging the sleeve).
Assembly of front cover
Clean the housing of seal 403.
Fit the seal 403 on the cylinder 201.
Orientate the slide block 312 to make it pass between
the pads 404.
Fit the front cover 12401 on the cylinder 403.
Take care not to pinch the seal 403 during the assembly.
Take care not to damage the bushing 415 during the
assembly.
Fit the screws 409 and nuts 409A.
Drain hole





126
6/6
NT 1003-R00 09 14 Mounting shaft A18 on AL pump e
Mounting shaft new model on AL pump (continued)