HYDAC FILTER SYSTEMS GMBH
Mounting/installing | 5
MoWa OLFP-1-T002 4469047 en-us lq
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5.2 Avoiding siphoning
If there is a height difference (ΔH) between the suction side
and pressure side container/system, the lower line can develop
a suction effect and trigger the siphoning effect between the
communicating containers/systems. This siphoning effect also
occurs when fluid is pumped in a pre-pressurized reservoir.
Fig. 13:
Avoiding siphoning
NOTICE
Siphoning effect
Reservoir overflowing/leaking = oil spill
u
Remove the ends of the hoses from the reservoir after op-
eration or shut the shut-off device in the suction line.
After the filter unit is switched off, the height difference/primary
pressure can cause flow to occur both in the feed direction and
against the feed direction and the fluid can leak uncontrollably.