Hydraulic Oil Reservior; Determining Reservoir Size; Determining Reservoir Shape; Mandatory Reseroir Features - Vanair Reliant RS45 Installation, Operation, Maintenance And Parts Manual

RELIANT RS45 AIR COMPRESSOR
IMPORTANT
Use only a filter that is specifically intended
for hydraulic systems.
3.4.2 HYDRAULIC OIL RESERVOIR

3.4.2.1 DETERMINING RESERVOIR SIZE

In a conventional hydraulic system, minimum
tank size, in gallons, should be equal to the
maximum GPM flow rate, times two (x 2).
3.4.2.2 DETERMINING RESERVOIR
SHAPE
The reservoir structure should be tall and
narrow rather than shallow and broad
(Figure
3-1).
recommended because:
1. The oil level is well above suction line
opening, avoiding the possibility of
drawing air into the pump due to a vortex
or "whirlpool" effect within the tank during
operation flow.
A
KEY DESCRIPTION
A PREFERRED SHAPE: TALL AND NARROW
B SHAPE TO AVOID: BROAD AND SHALLOW
Figure 3-1: Reservoir Design Shape
VANAIR MANUFACTURING, INC.
(844) VAN-SERV • www.vanair.com
A tall, narrow tank
B
090126-OP_r0 (JAN-2018)
2. Allows for better oil level tolerance level
of the system if vehicle operates at an
unusual (slightly off level) vehicle angle.
3. To keep return flow well below the
surface so it does not break the surface
and cause aeration (cavitation) of the oil.
3.4.2.3 MANDATORY RESERVOIR
FEATURES
• The reservoir should incorporate the
following design features:
• In terms of location of the reservoir tank
within the hydraulic system, note that the
hydraulic pump's inlet line (suction line
out from the reservoir to the pump)
should be located near the bottom of the
tank, well below the oil level. The suction
is
line should protrude a minimum of two
(2") inches into the reservoir to keep it
away from potential contaminant surface
buildup.
• A baffle or baffles should be included to
prevent sloshing, or centrifugal motion of
the oil; the goal is to break up direct flow
of the oil from the return point to the
suction point. This allows for the cooling
action contact with the tanks' inner
surfaces, and promote separation of any
air or contaminants that interact with the
flowing oil.
• An ideal baffle design would position
several (but not too many) baffles to
promote an 'S' shape flow within the
reservoir, as viewed from above. The
area of the end gaps should be at least
twice the area of the suction line
diameter.
• A drain port with plug, situated at the
lowest point of the reservoir, is needed to
assure complete draining. It should be
installed using an adapter or housing
which does not protrude above the inner
surface of the floor of the tank. It should
be visible and accessible for removal,
with sufficient space available for
catching the waste oil.
• If the return line entrance to the tank is
located near the top, it should be
extended downward within the tank to
minimize foaming and aeration of the
circulating oil. This extends oil integrity,
which in turn helps to maintain system
performance and reliability.
SECTION 3: INSTALLATION
PAGE - 9