Kremlin-Rexson FLOWMAX 20-220 F User manual

KREMLIN REXSON N° : 578.065.110-UK-1202
FLOWMAXPUMP
20-220 F
Disassembly / Reassembly
TRANSLATION OF THE ORIGINAL MANUAL
IMPORTANT : Before assembly and start-up, please read and clearly understand all the
documents relating to this equipment (professional use only).
THE PICTURES AND DRAWINGS ARE NON CONTRACTUAL. WE RESERVE THE RIGHT TO MAKE CHANGES WITHOUT
PRIOR NOTICE.
KREMLIN - REXSON
l
150, avenue de Stalingrad
93 245 - STAINS CEDEX – France
 : 33 (0)1 49 40 25 25 Fax : [phone]
www.kremlin-rexson.com

KREMLIN REXSON - 1 - N° : 578.065.110-UK-1202
CAUTION :
Before any action on the pump, shut off the compressed air supply and
depressurize the system.
The pump is manufactured under the ATEX agreement and can not be modified.
KREMLIN REXSON will not be held responsible for any failure to comply with that instruction.
Guards (air motor cover, coupling shields, housings …) have been designed for
safe use of the equipment.
The manufacturer will not be held responsible for bodily injury or failure and / or
damage to property due to removal or partial removal of the guards
FLUID MOTOR OR AIR MOTOR REPLACEMENT (REFER TO DOC. 573.176.050)
Guards (air motor cover, coupling shields, housings …) have been designed for
safe use of the equipment.
The manufacturer will not be held responsible for bodily injury or failure and / or
damage to property due to removal or partial removal of the guards
Disassemble all the accessories of the pump.
Disassemble the pump from the bracket by removing the nuts that hold on the U-bolts.
Put aside the pump (the pump is fitted with an hoisting ring).
To replace the fluid section (2) or the air motor (1), the pump must be removed (see bellows) :
-Remove the FLUID SECTION (refer to Doc. 573.175.050)
Disassemble the connecting rod (41), the suction valve (30), the cylinder (21).
Remove the 3 nuts (11) that hold on the 3 tie-rods (7) and slide the upper flange (1). Hold on the
guide rod of the air motor and unscrew the piston (22).
-Remove the COUPLING part.
-Remove the air motor.
DISASSEMBLY / REASSEMBLY OF THE FLUID SECTION
Guards (air motor cover, coupling shields, housings …) have been designed for
safe use of the equipment.
The manufacturer will not be held responsible for bodily injury or failure and / or
damage to property due to removal or partial removal of the guards
Unscrew the fitting (38) and the screws (43 and 45) to remove the attachment fluid tube (41).

KREMLIN REXSON - 2 - N° : 578.065.110-UK-1202
SUCTION VALVE
Unscrew the suction valve (30).
(If the cylider (21) remains attached to the
suction valve, unscrew both parts, then hold
cylinder (21) by inserting a rod into the
cylinder holes designed for this purpose).
The ball (32) is secured on the valve by
means of a circlips (33).
Clean the parts.
Reinstall the suction valve (30) and the seal
(24). Replace the parts if it is necessary.
CYLINDER
In order to make easier the disassembly, a hole is drilled in the cylinder (21) at each end.
Depending on the part that it is unscrewed first, insert a rod into one of these holes to unscrew the
other part.
When reassemblying, make sure the two seals (24) are installed.
EXHAUST VALVE AND MOBILE PACKING
Unscrew the cylinder (21) and pull it downwards.
Unscrew the exhaust valve (29) by holding the piston (22).
Remove the ball (25) and the mobile packing (cup seal 23).
Clean all the parts and replace them by changing the seals if it is necessary.
UPPER TIGHTNESS SEAL
Unscrew the 4 screws (26).
Remove the tightness seal (27) by pulling the exhaust flange (20) downwards.
Change the tightness seal (27), the O Rings (8 and 24).
Remount the parts in the reverse order of the disassembly sequence.
Comply with GT seal orientation order.

KREMLIN REXSON - 3 - N° : 578.065.110-UK-1202
DISASSEMBLY / REASSEMBLY OF THE COUPLING (WITH BELLOWS)
Guards (air motor cover, coupling shields, housings …) have been designed for
safe use of the equipment.
The manufacturer will not be held responsible for bodily injury or failure and / or
damage to property due to removal or partial removal of the guards
Disassemble the fluid section prior to carrying out the following procedure.
BELLOWS (REFER TO DOC. 573.175.050)
Unscrew the nuts (11) from the coupling tie-rods.
Remove the suction flange (1) and the cylinder by pulling them downwards.
Disassemble the piston (22) from the air motor rod.
Unscrew the skirt (6) to remove the low part of the bellows.
Disassemble the suction bearing (3) of the air motor by unscrewing the screws (9).
Remove bellows coupling part by sliding it off the air motor rod.
Disassemble the bellows flange (4) by removing the screws (10) to take off the upper part of the
bellows.
Change the bellows (5).
When installing bellows, push it into skirt (6) firmly. Insert the bellows into the bearing (3).
Assemble the flange (4) in the bearing (3) and tighten the assembly with the screws (10).
Slide them along the air motor rod.
Screw the skirt (6) on the air motor rod.
Rotate the bellows coupling part and the motor rod until suction bearing (3) matches the
lower support of the air motor. Be careful not to twist the bellows.
Secure the suction bearing (3) on the lower support of the air motor by means of the screws (9).
Remount the fluid section piston (22) on the air motor rod.
Change the seals (8) then remount the cylinder (2) and the suction flange (1).
Install the assembly on the tie-rods (7) and tighten the nuts (11).
AIR MOTOR
Guards (air motor cover, coupling shields, housings …) have been designed for
safe use of the equipment.
The manufacturer will not be held responsible for bodily injury or failure and / or
damage to property due to removal or partial removal of the guards
REVERSING BLOCK (REFER TO DOC. 573.174.050)
Disassemble the air motor cover (31) by removing the CHc screw (33).
Dissociate the female yoke (14) from the reversing block lever (10).
Dismount the reversing -block by removing the screws (11).
Reinstall the new reversing-block in the reverse order of the
disassembly sequence.
CAUTION : the number of spirals must equally be distributed on each fastening parts in
order to get the above dimension.
31.85 mm ±0.5

KREMLIN REXSON - 4 - N° : 578.065.110-UK-1202
Before reassemblying the different components :
-Clean the parts with the appropriate cleaning solvent.
-Install new seals if it is necessary, after having lubricated them with PTFE grease.
-Lubricate the piston and the inside of the cylinder to prevent from damaging the seals.
-Install new parts if it is necessary.
DEGREES OF WEAR
The wetted parts in contact with the material are subject to wear with time. It depends, of course, on the
rates and duration of pump operating; also on the material handled.
Under normal operating and servicing conditions, with standard filled material not including foreign
matters or chemically aggressive, the average working life can be estimated as :
-1 million strokes for the tightness seals.
-10 millions strokes for the bellows.

KREMLIN REXSON - 5 - N° : 578.065.110-UK-1202
ASSEMBLY INSTRUCTIONS
1
2
10
6
7
8
9
4
12
11
20
22
21
23
24
29
25
26
36 32
33
37
31
38
41
42
43
45
3
44
5
27
30
A1
A1
A1
A1
A2
24
A1
A2
C1
A1
C1
C1
C1
A2
Index Instruction Description Part number
PTFE grease 'TECHNILUB' grease
(10 ml) 560.440.101
Graphite grease Graphite grease box
(1 kg / 2.204 lb) 560.420.005
Medium strength
Aneorobic Pipe sealant Loctite 577
A2
A1
C1