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Mounting and installation
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Festo – MPAC-VI-EN – 2017-12a – English
Operate system equipment with unlubricated compressed air if possible. In this way, you
protect the environment. Festo pneumatic valves and actuators have been designed so
that, if used as intended, they will not require additional lubrication and will still achieve
a long service life.
Observe the subsequent information if the use of lubricated compressed air is essential:
The compressed air produced after the compressor must correspond to the quality of
unlubricated compressed air. If possible, do not operate the total system with lubricated
compressed air. If possible, always install the lubricators directly upstream of the con
suming actuators.
Note
Incorrect supplemental oil and an oil rate in the compressed air that is too high will
reduce the service life of the valve terminal.
Use Festo special oil OFSW-32 or the alternatives listed in the Festo catalogue
(conforming to DIN 51524-HLP32, basic viscosity 32 CST at 40 °C).
The additional lubrication must not exceed 25 mg/m
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(
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ISO 8573-1:2010 [–:–:5]).
Check the correct lubricator setting (
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Following section).
This avoids malfunctions of the valves.
Setting the lubricator
With the machine running (typical operating status), optionally:
– 0.2 to max. 1 drop/min
– 0.5 to 5 drops/1000 l air
Checking the setting
Check the service units for condensate and lubricator setting twice a week.
The procedure described subsequently can be used to check the lubricator setting.
1. Ascertain the actuator which is furthest from the lubricator.
2. Ascertain the valve terminal which controls this actuator.
3. Remove the silencer, if present, from the port (3/5).
4. Hold a piece of white cardboard at a distance of 10 cm from the exhaust port.
5. Let the system run for some time.
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There must be only a slight yellow colouring on the cardboard. If oil droplets appear, this is an
indication that too much oil has been used.
Another indicator of over-lubrication is the coloration or status of the exhaust air silencer. A distinctly
yellow colouring of the filter element or drops of oil on the silencer indicate that the lubricator setting is
too high.