P
RODUCT INFORMATION
3.5.4. Vane motor
The vane motor (
,
→
Figure 4) consists of a cylin-
der liner
(1)
with two lateral bearing washers and
an inner rotor
(2)
.
The rotor is mounted eccentrically in the cylinder
liner and is provided with slots
(3)
for holding the
slats
(4)
.
The slots can move freely and are on the inner
wall
(5)
of the cylinder liner. Two slots form a
chamber
(6)
.
The incoming compressed air creates a greater
force at the leading larger slot surface
(4.1)
than at
the following smaller slot surface
(4.2)
. The rotor’s
torque results from the difference in force.
The compressed air can again escape when pass-
ing through the outlet opening
(7)
Lubricant cham-
bers
(8)
are arranged between the vane slots of
the rotor. They ensure a continuous motor lubrica-
tion (not applicable for mini).
The arrows in the illustration indicate the direction
of rotation of the rotor and the corresponding path
of the compressed air.
Figure 4: Functioning of the compressed air vane
motor
3.5.5. Motor lubrication
The JDN high performance grease contained in
the motor allows for operation with oil-free com-
pressed air.
It works over an operating time of about 250 hours
and should, however, be replaced as required, but
after five years at the latest.
3.5.6. Control
The lifting and lowering motion is controlled di-
rectly from the rope control (
,
→
Figure 5) One-
handed sensitive operation is possible. The di-
rection of movement is indicated by arrows.
I
Lifting: Carefully pull on the rope with the
green handle cone. The load will be lifted
slowly.
I
Pull on the rope harder to increase the lifting
speed.
I
Ease up on the rope slightly to reduce the lift-
ing speed.
I
Lowering: Carefully pull on the rope with the
yellow handle cone. The load will be lowered
slowly.
I
Pull on the end of the rope harder to increase
the lowering speed.
I
Ease up on the rope slightly to reduce the
lowering speed.
Figure 5: Control
The control system is suitable for use in explosive
areas.
Doc.-No.: VA049318-10-OM-EN-0319-64-2
Page
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