Asco Joucomatic 448 Serie Puesta En Marcha Y Consejos De Utilización página 13

GB OPERATING INSTRUCTIONS FOR CYLINDER STB WITH
Ø 25 to 50 mm
Ø 63 to 80 mm
PASSIVE BRAKE
For fitting and removal of the guide system the complete cylinder
unit should be removed from the machine or plant.
Dismantling of the Guide Carriage
1. Depressurize the cylinder and brake lines and switch off all
electrical power supply.
2. Remove all parts mounted externally on the plate (22).
3. Unscrew the screws (21) with their washers (20), backing off each
screw a little at a time, so that the plate (22) does not tip and jam
when it is removed from the guide carriage (23).
4. Remove the plate (22) from the guide carriage (23).
5. Unscrew one drive block (27) from the piston of the cylinder so
that the guide carriage can be moved.
6. Loosen the screws (7) in the wiper cover (8 or 28 + 29).
7. For the diameters 40 to 80 only: remove one end cap of the cylinder.
8. Slide the complete guide carriage (23) off the guide rail (1).
9. Unscrew the wiper covers (8 or 28 + 29) from both ends of the
guide carriage (23).
10. Inspect the parts – replace damaged or worn parts such as: wiper
(10 or 30 + 31), slide profile (11) and felt (9) (service kit).
Dismantling of the Brake
1. Remove the saucer springs (18) and pressure plates (19) and press
the brake piston (15) out of the guide carriage (23) from the brake
lining side.
2. Remove the screws (12) and remove the brake lining (13) and
guide pin (17) from the brake piston (15), and also the O-rings
(14) and (16).
3. Inspect the parts – replace damaged or worn parts such as: O-
rings (14) and (16) and brake lining (13).
Dismantling and Reassembly of the Guide Rail
1. Unscrew the screws (4) with their washers (3).
Remove the guide rail (1) and clamping rail (2) from the cylinder
profile.
2. Clean all the parts.
3. Centre the guide rail (1) on the cylinder profile. Secure the guide
rail (1) and clamping rail (2) with the screws (4) and their washers
(3) (use the specified torque).
Reassembly of the Brake
1. Clean all the parts, the inside of the brake piston chamber and the
brake air connection.
2. Centre the guide pin (17) on the brake piston with the help of the
pressure plate (19) and fit the brake lining (13) on the brake piston
(15), applying a locking medium (Loctite low-strength is
recommended) to the screw (12) and tightening it.
3. Grease the walls of the brake piston chamber and the groove in
the brake piston lightly with guide grease.
!
The brake lining must be grease-free.
4. Locate the O-rings (14) and (16) in the brake piston (15) and grease
the O-rings lightly.
5. Fit the brake piston (15) into the guide carriage (23).
(Ø25 to 80 mm)
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