HornBlasters HK-S4-540D User Manual
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III. Installing Your Air Tank
Locate a secure area close to your air compressor to mount your air tank. The leader hose of the compressor
should be able to reach an available port on the air tank with some slack.
1. Position the tank in its desired location and secure it using standard mounting hardware.
IV. Installing Your Air Tubing & Air Valve
Before cutting any air tubing make sure to double check your measurements. Make sure to cut equal lengths of
air line to connect each horn to the splitter manifold or the horns may sound at different times. We recommend
cutting your lengths with at least an extra inch per line just to be safe. Compression fittings use ferrules (olives)
that should be used only once. The air valve should connect to the center fitting of the 5-point splitter fitting.
When threading any fittings make sure to use Teflon tape or lock-tight to prevent air leaks.
The air valve may be mounted in any direction but it is preferred that it is mounted vertically.
IMPORTANT: Do not rotate or remove the inline check valve in the compressor’s leader hose. Doing so will
damage its seals and will result in damage to your air compressor and voiding of your warranty.
IMPORTANT: Do not make any kinks in your air line. Doing so will disrupt air flow and is irreversible.
Air Compressors to Tank (Repeat For Each):
[Air Compressor] » [1/4” Leader Hose] » [1/2 to 1/4 NPT Reducer Bushing] » [1/2 NPT F Port] » [Air Tank]
1. Locate a free 1/2 NPT port on your air tank and install a 1/2 to 1/4 NPT reducer bushing using Teflon tape
across the threads.
2. Carefully connect the air compressor leader hose to reducer bushing using Teflon tape on the threading.
When installing the leader hose DO NOT move the inline check valve located just above the swivel fitting.
3. Locate a secure location to mount the leader hose using the bracket provided. Avoid locations where the
leader hose may become tangled with wires and other hoses.
a. When mounting the bracket drill a hole with a 3/16” drill bit and push the self-anchoring hose
bracket into the hole. Route the leader hose through the hose bracket and secure by pressing the
bracket clamp into the locker position.
Pressure Switch in to Tank:
[Air Tank] » [1/2 NPT to 1/8 NPT Reducer Bushing] » [Pressure Switch Unit]
1. Install the 1/2 to 1/8 NPT reducing bushing into an available port on the air tank using Teflon tape on the
threading.
2. Install the pressure switch unit into the reducer bushing again using Teflon tape on the threading.
Air Horns to Tank:
[Air Tank] » [1/2 to 1/4 NPT Reducer Bushing] » [5/16” to 1/4 NPT M Fitting] » [5/16” Line] »
[5/16” to 1/4 NPT M Fitting] » [Air Valve] » [5/16” to 1/4 NPT M Fitting] » [5/16” Line] »
[5/16” 5-point Splitter Fitting] » [5/16” Line] » [5/16” to 1/8 NPT M Fitting] »
[1/8 NPT F Elbow Fitting] » [Rear Horn Mount]
1. Plan out the fittings’ placement out before you begin and make sure you understand the correct order.
2. Make sure that your tank is empty of air and that the compressor is not running during installation.
3. Start by cutting equal lengths of 5/16” tubing to run from each horn to the 5-point manifold fitting.
4. Install the air line carefully using two wrenches for each compression fitting. Use one wrench to hold the
body of the fitting stationary and another to tighten the compression nut.
5. After plumbing the horns to their manifold fitting, measure and plumb one length of 5/16” tubing from the
center fitting of the manifold to the outlet of the air valve. If the valve has a directional arrow on its body
the arrow starts with the inlet and points out the outlet; the arrow should point towards your horns.
6. Next connect your air valve’s inlet port to your air tank using 5/16” air line using the 5/16” Straight to 1/4
NPT M fittings.
Drain Cock in Tank:
1. Install the drain cock in the 1/4 NPT port on your air tank. If the drain cock has compound on its threads
it is unnecessary to use Teflon tape on the threads.
Extra Ports in Tank:
1. Install the supplied three 1/2 NPT plugs in the remaining 1/2 NPT ports using Teflon tape on the threads.