Parker HAUSER HPLA Series, User Manual

Page: 33 / 55

PLEASE NOTE: THIS IS HAUSER GERMANY MANUAL.
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Mounting / Repair
33
5.4.2 Checking the carriage play
Note
You can gain a rough idea of possible carriage play by trying to move the carriage or
the mounted installation. A more exact method is described in the following pro-
cedure:
1. Arrange to be able to move over the greatest possible travel.
2. Remove the steel strip cover if there is one: chapter 5.11 .
3. In order to move the carriage by hand and to be able to see the wheels, remove the load
attachment plate and the load from the carriage.
4. Remove the timing belt from the carriage: chapter 5.2.2 point 4.
5. Push the carriage over the complete travel. All wheels must turn during travel.
6. To check the pressure acting against it, prevent the wheels from turning using your index
finger; it should be possible to stop them with minimal force.
Characteristics of a correctly adjusted carriage:
•
The carriage has no play
•
The carriage can move over the whole travel area without any great difference in force
•
The carriage can be inserted into the profile without excessive pressure (requires
dismantling of the tensioning station, see below)
Note
Jockey wheels which are adjusted too tightly develop pressure marks which lead to
running noise and wheel defects. Replace defective wheels (see below).
5.4.3 Removing the carriage
Danger
If the actuator is used in a vertical position, secure the carriage against movement. If
the carriage is not secured, then it may fall downwards as a result of gravity. This
can result in damage to personnel or property.
1. Move the carriage to a reference point (e.g. machine zero or real zero). Mark the carriage
position on the HPLA profile (use a felt pen).
2. If necessary, remove the steel strip cover (chapter 5.11)
3. Remove any attachments from the carriage.
63 60
53
51
4. Slacken the timing belt: Remove the dust cover (63) of the
tensioning station. Loosen the lock-nut (53).
Loosen the tensioning screws (51) by approximately 10
turns
611
601
608 607
5. Loosen the timing belt clamp:
Remove the screw (608). Completely pull out and remove
the bracket. If the bracket is tight and cannot be loosened,
then the load attachment plate must be removed.
6. Remove the tensioning station by loosening the four fixing screws (60).
7. Mark the carriage with an arrow pointing towards the motor end and pull the carriage out of
the profile.
Note
Re-insert the carriage later in the same direction, otherwise the wheel adjustment will
be wrong!