16
Installation and Operation Manual
7
Hydraulic Plumbing Installation
Figure 7-1 FoamPro AccuMax SP Hydraulic System Diagram
Hydraulic
Reservoir
Hydraulic
Pump Suction
Hydraulic Pump
Cooler Inlet
Motor Inlet
Motor Return
System Return
Hydraulic
Oil Cooler
Foam
Pump/Motor
Assembly
Hydraulic Motor
Case Drain
Hydraulic Pump
Upper Case Drain
Hydraulic Pump
Bottom Case Drain
Figure 7-1 provides some recommended guidelines for
the location of the hydraulic system components. When
making hydraulic component connections ensure all
applicable DOT and SAE standards are followed. Use
hoses and fittings rated at least the maximum working
pressure listed in Section 15 for the hydraulic oil high
pressure lines. See Section 15 for required fitting sizes,
minimum hose size, and minimum pressure ratings.
The fittings required to connect the hydraulic hoses to
the FoamPro AccuMax SP foam pump motor and
hydraulic supply pump are SAE ORB (O-Ring Boss)
fittings with SAE JIC 37° flare swivel, and SAE Split
Flange port connections.
CAUTION: To ensure the integrity of fitting
connections in the hydraulic system, use only SAE
JIC 37° flare, SAE O-Ring Boss, or SAE Split Flange-
type hose connections.
CAUTION: Use only approved petroleum-based
hydraulic fluids as described in Section 4. Never mix
fluid types. Ensure all hoses and seals are
compatible with fluids used. Do not use water or
glycol-based fluids. Do not use phosphate ester-
type fluids. Other hydraulic fluids such as SAE 10W-
40HD motor oil are too viscous for proper pump
performance.
Hydraulic Power Source
The hydraulic power for the FoamPro AccuMax SP
system is supplied by a hydraulic pump mounted on the
fire apparatus engine, transmission, or auxiliary PTO.
The hydraulic pump supplied with the system has been
chosen to provide the required flow and pressure to
drive the FoamPro system.
Refer to Section 4 of this manual for further pump and
PTO information and Section 15 for detail dimensions of
the pump. See the table in Section 15 for all proper hose
sizes, pressure ratings, and fittings for the various
hydraulic components supplied by FoamPro.