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215-293-0700
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215-293-0701
5
Installation and Operation Guide
Proven
Priming
Performance
Air Schematic, PPV, Air Hose and Connections
Air Supply Schematic
The AirPrime unit must be connected to the vehicle’s air brake system exactly as
shown in
Figure 4
below. This schematic is typical for most trucks built today.
1. Air compressor supply is shown as
.
2. Supply reservoir (wet tank) is shown as
.
3. Primary reservoir (typically for the rear brakes) is shown as
.
4. Pressure Protection Valve (PPV) is shown as
and in photo at right.
5. Figure
a
shows a customer supplied SCBA Cylinder used with the Trident
Pressure Regulator for use on trucks without airbrakes.
The regulator
b
is available separately as Part #14.013.0.
Air Supply, Hose and Connections
The air source used to supply the AirPrime shall be from the primary air reservoir
in
Figure #4
or a secondary air reservoir (normally
used for air horns, air accessories, fire pump shift or AirMax intake relief valve).
The supply line from the Pressure Protection Valve (PPV)
in
Figure #4
to the primer control should be a minimum size of 3/8" OD air
brake tubing and connected at both ends with 1/4" NPT fittings (connections and tubing must be rated for air brake service). The tubing
should be kept as short as possible, secured at regular intervals, free of any kinks or bends and must not be run near exhaust components
or rotating shafts. Stay 6"
[150 mm]
away from any exhaust or hot components. Use rubber grommets to protect the tubing from sharp
metal edges at all hole locations.
When the installed length of the air brake tubing exceeds 20 feet
[6�1 m]
, a minimum size of 1/2" OD air brake tubing should be used.
Pressure Protection Valve (PPV)
A Pressure Protection Valve (4) is not supplied with the primer. A
Trident PPV
, Part #30.053.0 may be
purchased separately. Alternatively a Bendix PPV, Style PR-4, Part #288323 or its equivalent may also be
used. The PPV valve must be installed per
Figure #4
between the primary air supply reservoir
and the
primer air inlet. The valve protects the air brake system from any leaks that may occur in the primer or in
the air line from the PPV to the primer. The pressure setting for the PPV is 80 PSIG maximum.
Filter Port
This cleanable porous filter is located inside the top of the primer body, below the threaded area of the
air supply connection fitting or solenoid valve connection. See
Figure #5
.
A replacement filter is available as
Part #21.002.0
.
Figure 4
3/4" FNPT
Inlet Hose
Attaches
Here
Strainer/Drain
Inlet Strainer Mounting
™
Primer Outlet
Point
Straight
Down
Figure 3
Figure 5
Typical Chassis
Air Supply System
From Engine Air Compressor
Primary
Reservoir
PPV
Supply
Reservoir
Minimum 3/8" Air Brake Tubing
3
4
1
2
1
5
5
To AirPrime Primer Air Inlet
�
�
�
�
Figure 4
a
a
PPV
#30.053.0
Sold Separately
Alternate Air Supply and Regulator
4
b
