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215-293-0700
7
215-293-0701
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Installation and Operation Guide
Air Schematic, PPV, Air Hose and Connections
Air Supply Schematic
The AirPrime must be connected to the vehicle’s air brake system exactly as shown
in
Figure 4
below. The schematic below 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 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 or fire pump shifting system).
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 pipes
(Stay 6"
[150 mm]
away from any exhaust or hot components), muffler, or rotating shafts. Use grommets to protect the tubing lines from
contacting sharp edges at hole locations.
When the length of tubing required exceeds 20 feet
[6.1 m]
, a minimum size of 1/2” OD air brake tubing should be used.
Pressure Protection Valve (PPV)
The Pressure Protection Valve (4) is not supplied with the basic primer kit. A Trident PPV, Part #30.053.0
may be purchased separately, a Bendix PPV, Style PR-4, Part #288323 or its equivalent may be used.
The PPV valve must be installed per
Figure #4
between the primary air supply reservoir
and the
AirPrime primer air inlet. The valve protects the air brake system from any leaks that may occur in the
primer control or the line from the PPV to the primer control. The pressure setting for the PPV is 80 PSIG
maximum.
Air Filter Port
This cleanable porous filter is located inside the top of the primer body, below the threaded area on the
air supply connection or solenoid connection. See
Figure #5
.
A replacement filter is available as Part #21.002.0. When replacing, the domed side faces up.
Figure 4
3/4" NPT
Hose
Strainer
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 4a
PPV
#30.053.0
Sold Separately
Alternate Air Supply and Regulator
