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5 Commissioning & Maintenance
5.1 Commissioning
If the actuator is fitted with a manual control, it shall be brought into the zero position (stroke indicator on
housing (36 & 39) between the grooves on the manual control supports (43)). Open the locking bolt (53) and
turn the handwheel (50 for PA
-N 540; on the gearbox (56) for PA-N 1080). Once the correct position has been
reached, the locking bolt (53) can be re-engaged.
In order to ensure trouble-free operation, the control air required for actuation is processed by a maintenance
unit. If the actuator is operated at subzero temperatures, dry control air must be used .
5.2 Maintenance
Pneumatic actuators without manual control are maintenance-free.
O ring (3), diaphragm (5), guide complete (10) and screw connector complete (11) are wearing parts and
must be changed as necessary.
In order to ensure constant availability of the manual control, we recommend checking and, if necessary,
topping-up the lubricant level for the spindle (35) every 3 months.
The spindle is lubricated in the factory. For this the lubricant KLÜBERPLEX BE 31-502 by
KLÜBER/LUBRICATION is used. If using a different but equivalent lubricant, all parts coming into contact
with the lubricant must be cleaned thoroughly prior to using the new lubrication in order to preclude mixing
and any potential reaction of the two lubricants. Oest EP from the Oest company is recommended as an
alternative lubricant. Caution: If using alternative or mixing different lubricants, the manufacturer does
not undertake any guarantee for consequential damages.
Changing the lubricant after 8 – 10 years is recommended:
The manufacturer should be consulted in the event of lubricant change.
Quote the data on the nameplate (see Fig. 6) when ordering spare parts:
• Fabrication No. (Fig. 6 Box 1)
• Type (Fig. 6 Box 2)
• Spring (Fig. 6 Box 3)
• Air supply pressure (Fig. 6 Box 4)
• Function (Fig. 6 Box 5)
Fig. 6: Nameplate
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