MA0882RHG
45
○
It is incorporated with a mechanism to stop damage when the hydraulic oil filled
inside the cylinder has increased its pressure due to the volume change (relief
valve). Pay attention to the points specified below for functional maintenance of
lock valve and relief valve.
・
Assemble piping after completely removing the dust inside the pipe for
functional maintenance of lock valve and relief valve.
・
If the function of the lock valve lowers, this is dangerous as the work will fly
out when the hydraulic pressure suddenly lowers due to blackout or
malfunction of the hydraulic pump, etc.
・
If the function of the relief valve lowers, the volume of the filled hydraulic oil
changes causing an increase in pressure, which is dangerous resulting in
malfunction.
・
To avoid serious injury from flying work, use the throttle valve to keep the
surge pressure low. Operation failure and cylinder breakage may occur if a
reducing valve used for the hydraulic pressure setting fails to respond to
pressure adjustment and results in excessive surge pressure.
Remark ) What is a “surge
pressure
”?
Pressure produced by a change in velocity of the moving stream
that result from activating a hydraulic pump, operation of a solenoid valve.
・
Select the operation equipment that matches the pipe diameter of the cylinder. The
smaller the diameter is, the larger the pipe resistance becomes and the lower the
acting speed is.
