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Voith Turbo H + L Hydraulic GmbH & Co. KG
25000057510-TED-ENX-04
Suction pipe
Arrange the suction pipe so that
• the pump cannot empty when the system is shut down,
• the suction opening of the suction piping must be at least 50 mm
(or three times the nominal diameter) below the lowest oil level,
• the pipe ends 50 mm above the container oor.
The return uid must not be sucked in directly by the pump itself. Ensure the
greatest possible distance between the suction piping and return pipe.
17.6.1 Factorsthatinuencethelossinpressureinthe
suction pipe
Check the following factors if the loss of pressure falls below the permitted input
pressure (chapter 5.2):
• ow speed in the suction piping (speed!)
• suction height (difference between oil level and pump)
• any existing lters
• oil viscosity
• suction cross-section
• length of the suction pipe
• number and shape of direction changes in the suction pipe
17.7 Oil reservoir
This section briey describes the requirements for pressure uid circulation tank.
•
The required pressure uid quantity must correspond to at least twice (in intermit-
tent mode and during long cool-down phases) to ve times the pump delivery
volume per minute.
•
The pressure uid has to cool down, if the permissible temperature of the pump
or pressure uid may be exceeded. (chapters 5.2 and 6).
•
The tank must be tted with a ventilation lter and a strainer in the ller aperture.
• The tank must be thoroughly cleaned before lling with oil.
• If tanks are painted, oil-resistant paint must be used.
•
Ensure that there is a sufcient bafe plate between the drawn-in pressure uid
and the return piping in order to separate the air from the oil (separating plate).
Internal gear pumps
Pump combinations - conguration
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