GRASL P Series Owner's manual

Pneumatic cylinder, double-acting, typ P
Technical Instructions
Please read through these technical instructions carefully and fully.
Work on these devices must only be carried out by qualified person-
nel.
Meaning of the symbols
Safety instructions must be observed!
The disregarding of these instructions can lead to personal in-
jury and / or material damage.
Advice, the non-compliance with these instructions or the
technical data shall lead to the loss of rights under guarantee.
Correct,
This is how it should be done.
Incorrect,
This is how it should not be done.
Correct and proper use
The cylinder serve the purpose of opening and closing NSHEV de-
vices, such as windows, blinds and vents in the roof area (no free
access for system-external persons). The producer of the NSHEV is
responsible for the implementation of EN 12101. For all other appli-
cations the compatibility and thus the security can not be guaran-
teed. On the application of voltage, a movement command is activa-
ted.
If the drives are installed below an installation height of 2,5m to the
floor, or to the next access level, appropriate devices must be fitted
so that people are not endangered (crushing and trapping hazards).
Apply the Directives, Rules and Standards intended for this purpose,
such as, for example, EN 14351 and ASR A1.6. Do not allow child-
ren to play with the device or its control and / or control devices, in-
cluding window controls.
Technical details
The cylinder are suitable for compressed air (filtered through filter
element), or for CO2 from suitable CO2 bottles.
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picture 1: pneumatic cylinder
Grasl Pneumatic-Mechanik GmbH
The technical data and permissible
loads on the cylinders must be obser-
ved.

The drives must only be used in normal atmospheric conditions. In
the case of atypical ambient atmosphere (for example, SO2-, saline
atmosphere), please consult.
Installation
Handle the drive only with appropriate PPE (eg cut resistant
gloves).
Prepare the installation space of the cylinder in such a way
that there is no risk of crushing (e.g.: providing protection
plates).
The cylinder mounting must be designed according to the cy-
linder forces.
The following must be observed before mounting:
Check the completeness of the scope of supply.
Check cylinder and piston rod for transport damages.
Ensure that the cylinder can freely pivot in the whole of the stroke
range and cannot come into contact with parts of the building.
Before fixing the cylinders to the coupling bracket, mounting bra-
ckets or other fixing elements, the possible installation dimensions
of the relevant drive designs must be taken from the data sheets.
Mount the cylinders on the appropriate fixing elements. It must be
ensured that the mountings are secured by means of appropriate
safety devices (siehe picture 2).
In order to prevent the screwing out of the eyebolt, the lock nut
must be tightened (siehe picture 2).
Pay attention to the aligned installation of coupling brackets, moun-
ting brackets or other fixing elements. Lateral forces must be avoi-
ded (siehe picture 2).
It must be ensured that the cylinders can always reach their
end position, otherwise locking, possibly existing internal
locking, is not guaranteed. Use the eyebolt (adjustment range)
for adjustment. Check the setting in the retracted condition by
means of marking on the piston rod end (see picture 3).
Setting the closing force with which the NSHEV is driven into the
seal by adjusting the eye bolt or other piston rod suspensions.
(NRWG must be tightly closed all around).
When installing the console, make sure that the pivot axis of the cy-
linder is parallel to the hinge axis (see picture 4).
Cylinder mounting
Mount the cylinder with the fixing material (picture 5 / *1).
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Grasl Pneumatic-Mechanik GmbH
picture 3: end position
picture 2: fixing elements
a … coupling bracket
b … coupling bracket bolts
c … eyebolt
d … lock nut
e … washer
f … split pin
g … bearing pins
h … mounting bracket

When screwing in the fittings, position them straight to the
hole. Otherwise, a perfect function can not be guaranteed.
Tightening torque 20-30Nm.
Regard direction of arrow according to picture 5 / * 2!
Piston rod mounting
Mount the piston rod over the appropriate mounting version in the
provided mounting.
Eye bolt
Regard the adjustment range! To prevent the eye bolt from
being unscrewed, the nut must be countered. (picture 6 / * 1).
Spring locking bolt
The spring locking bolt must be locked again, as in the delive-
ry condition. (picture 6 / *2).
Installation
Before commissioning, the following must be regarded:
Check if the cylinder can pass through its full stroke without
collision with other parts of the system. In this case, it is also
important to take care of deformations at maximum load and
maximum pressure.
Check the function of the end position locking (if existing).
Normal operation
The cylinder has no internal protection against crushing.
Locking (if existing)
•The cyl. is in the extended end position, pressureless, locked.
•Unlocking:
Pneumatic: Apply pressure to the compressed air supply.
Manual: Pull on the unlocking device (picture 7).
Release the locking under load will cause the window, louver
or flap to move. This can lead to serious injury.
A force-supporting operation by external influences, e.g. over-
head installation, gas pressure-/spring-support and the like, is
not permitted. There is a risk of failing the locking.
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Grasl Pneumatic-Mechanik GmbH
picture 4: installation
a …Scharnierachse
b …Schwenkachse
picture 6: piston rod mounting
picture 5: direction of arrow

Maintenance/dismantling/fault finding
Stop the control of the cylinder and depressurize the cylinder
to prevent unwanted movements adue to external control/
move commands. As the cylinder depressurises, the cylinder
may move (check memory). Therefore, the cylinder or the de-
vice should be blocked.
Make sure that the working area is clear of obstacles and that
there are no persons in the danger zone.
When re-connect, observe possible movements by pending
travel commands.
The following points must be checked:
•Check unlocking screws for rust-freeness.
•Check the seal ring of the unlocking screw for wear, damage
and sealing to the housing.
•Check the piston rod for rust-freeness, damage and cleanliness
(clean if necessary).
•Check wiper for piston rod for wear and sealing to piston rod.
•Check all cylinder parts for tightness (it is absolutely necessary
to check the cylinder in any lifting position).
•Check for dustiness (clean if necessary).
•During the course of the annual maintenance, an inspection of
the mechanical fixings must be carried out. Where necessary,
these must be re-tightened using customary tools.
•Inspection of the structural conditions for changes with regard to
the requirements listed in the point, Installation.
•The equipment should be checked for imbalance, signs of wear
or damage to cables, springs and fasteners.
•Perform a manual functional test.
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Grasl Pneumatic-Mechanik GmbH
Disposal
The cylinder consists of the following materi-
als: rubber compound (NBR), plastic (POM),
aluminum (AlCuMgPb, AlMgSi0.5), steel
(1.4104).
The cylinder must be disposed of in
accordance with national regulations.
The maintenance must be carried out
once per year by a specialist trained
for the purpose.
The cylinder must not be opened. The
unauthorized opening of the zylinder
shall lead to the exclusion of liability
and loss of warranty. After opening the
housing, the drive is no longer safe to
operate and must not be used anymo-
re.
picture 7: locking