Festo HMPL Serie Instrucciones De Utilizacion página 31

HMPL-...
Setting the desired positioning time T:
S
Open up the one-way flow control valves
(exhaust restricted) until the desired posi-
tioning time is reached.
The valve with the silver tube exit
is used for setting the extension speed
(turn in anti-clockwise direction = in-
crease speed; see Fig. 29).
The permitted retraction/extension time as a factor of the work load can be found
in the diagram in the chapter "Characteristic curves" at the end of the operating
instructions.
S
Conclude the test run.
8 Operation
S
Take into account the fact that the viscosity of the shock absorber oil dimin-
ishes during operation due to the friction warmth which arises.
The shock absorber can therefore break through after a long period of oper-
ation.
At a temperature of 0 °C:
S
Note that the reset times of the shock absorber are longer.
Low temperatures cause an increase in the viscosity of the hydraulic oil.
Festo HMPL-... 0005NH – English
Fig. 29
31