The Fuse Blast has a variety of internal tubes for handling air and blasting or polishing media. Sometimes, an issue related to air or media flow may require inspecting or replacing some of this tubing. To access, inspect, clean or replace a specific length of tubing, refer to the notes in the relevant section of this document to determine which enclosure panels need to be removed.

Using this guide to inspect or replace tubing within the Fuse Blast.

Estimated time: 30–45 minutes, depending on the tubing to be inspected or replaced

Overview: Prepare the Fuse Blast and a clean workspace for replacing the motherboard and display assembly.

Step 1: Prepare the workspace

Clear a workspace. Ensure that the workspace is well-ventilated, level, and clean.

Step 2: Unplug the machine

Disconnect the power cable from the machine before continuing with maintenance. Do not perform maintenance on the machine while it is connected to power. Wait five minutes after disconnecting the printer from power before proceeding.

Step 3: Determine which panels need to be removed

Which panels you need to remove from your Fuse Blast is a function of which tubing you need to access, inspect, or replace. Check the section for the tubing you are working on to determine which panels need to be removed:

• Pneumatic cassette tubing
• Blast and part rinse air tubing
• Chamber rinse tubing
• Snorkel
• Cyclone inlet tube
• Cyclone outlet tube
• HEPA filter exhaust tube
• Media supply tube
• Regurgitator line
• Cyclone separator pressure tap tubing
• Media metering valve pressure tap tubing
• Post-air filter pressure tap tubing
• Pre-air filter pressure tap tubing
• Waste hopper pressure tap tubing

Overview: Remove the rear enclosure panel to access some of the internal Fuse Blast tubing.

Step 1: Unscrew the rear enclosure panel mounting screws

Using a T20 Torx driver, remove the five black oxide Torx screws (on the back of the unit, marked with red circles here) and the six chrome Torx screws (along the sides of the unit, marked with blue arrows here) securing the rear enclosure panel to the Fuse Blast. Set the screws aside.

Step 2: Remove the rear enclosure panel

Slide the rear enclosure panel up to free the locating features, then remove the panel. Set the panel aside.

Overview: Remove the back base panel to access some of the internal Fuse Blast tubing.

Overview: Remove the left enclosure panel to access some of the internal Fuse Blast tubing.

Overview: Remove the left base panel to access some of the internal Fuse Blast tubing.

Overview: Remove the right enclosure panel to access some of the internal Fuse Blast tubing.

Overview: Remove the upper sidecar panel to access some of the internal Fuse Blast tubing.

Overview: Remove the lower sidecar panel to access some of the internal Fuse Blast tubing.

Step 1: Access the tubing

To access the pneumatic cassette tubing, remove the lower sidecar panel.

Step 2: Disconnect the compressed air source

If you have not done so already, disconnect your compressed air source from the Fuse Blast inlet before performing any service on the pneumatic cassette tubing.

Step 3: Disconnect the pneumatic cassette tubing

Press on the push-to-connect fitting for the relevant tubing on the pressure manifold and solenoid valves, then pull the tube out. The tubing is color-coded red for blast, clear for part rinse, and black for chamber rinse.

Step 4: Reconnect the tubing

When you are done inspecting the tubes, push each back into its respective push-to-connect fitting. If you are replacing any of the tubes, install the replacement instead.

Overview: Access the blast and part rinse tubes to inspect or replace them.

Step 1: Access the tubing

To access the blast and part rinse tubing, remove the upper and lower sidecar panels.

Step 2: Disconnect the compressed air source

If you have not done so already, disconnect your compressed air source from the Fuse Blast inlet before performing any service on the blast or part rinse tubing.

Step 3: Disconnect the blast and part rinse air tubing from the pneumatic cassette solenoids

Press on the push-to-connect fitting for the relevant tubing on the rear of the solenoid valves, then pull the tube out. The tubing is color-coded red for blast and clear for part rinse.

Step 4: Disconnect the other end of the blast and part rinse air tubing

Press on the push-to-connect fitting for the relevant tubing on the right side of the blast cabinet, then pull the tube out.

Step 5: Reconnect the tubing

When you are done inspecting the tubes, push each back into its respective push-to-connect fitting. If you are replacing either of the tubes, install the replacement instead.

Overview: Access the various tubes used for the chamber air rinse to inspect or replace them.

Step 4: Disconnect the chamber rinse tubing from the right side of the Fuse Blast

Press on the push-to-connect fittings for the various chamber rinse tubes on the right side of the blast cabinet, then pull each tube out.

Step 5: Disconnect the chamber rinse tubing from the left side of the Fuse Blast

Press on the push-to-connect fittings for the various chamber rinse tubes on the left side of the blast cabinet, then pull each tube out.

Step 6: Disconnect the chamber rinse tubing from the rear of the Fuse Blast

To remove the rear chamber rinse tubing, loosen the screws holding the tubing brackets in place using a T20 Torx driver.

Step 7: Reconnect the tubing

When you are done inspecting the tubes, push each back into its respective push-to-connect fitting. If you are replacing any of the tubes, install the replacement instead.

Overview: Access the snorkel and its attachment points to the blasting chamber and filter cabinet to inspect or replace it.

Overview: Access the cyclone inlet tube and its attachment points to the blasting chamber and the side of the cyclone separator to inspect or replace it.

Step 1: Access the tubing

To access the cyclone inlet tube, remove the back base panel and the upper and lower sidecar panels.

Step 2: Disconnect the cyclone inlet tube

Using a slotted screwdriver, loosen the hose clamps from both ends of the cyclone inlet tube. Pull the cyclone inlet tube off of its flanges. If you are fully removing or replacing the cyclone inlet tube, disconnect the ground cable or fully remove the hose clamp.

Step 3: Reconnect the cyclone inlet tube

Slide both ends of the cyclone inlet tube tube onto the flanges on the blasting chamber and cyclone separator. Use a slotted screwdriver to tighten the hose clamps. If you fully removed or replaced the cyclone inlet tube, reconnect the ground cable as well.

Overview: Access the cyclone outlet tube and its attachment points to the blasting chamber and the top of the cyclone separator to inspect or replace it.

Step 1: Access the tubing

To access the cyclone outlet tube, remove the back base panel and the upper and lower sidecar panels. You may also need to remove the left base panel.

Step 2: Disconnect the cyclone outlet tube

Using a slotted screwdriver, loosen the hose clamps from both ends of the cyclone outlet tube. Pull the cyclone outlet tube off of its flanges. If you are fully removing or replacing the cyclone outlet tube, disconnect the ground cable or fully remove the hose clamp.

Step 3: Reconnect the cyclone outlet tube

Slide both ends of the cyclone outlet tube onto the flanges on the blasting chamber and cyclone separator. Use a slotted screwdriver to tighten the hose clamps. If you fully removed or replaced the cyclone outlet tube, reconnect the ground cable as well.

Overview: Access the HEPA filter exhaust tube and its attachment points to the filter cabinet and blower fan to inspect or replace it.

Overview: Access the media suppy tube and its attachment points to the media hopper, blast gun, and blasting chamber to inspect or replace it.

Step 1: Access the tubing

To access the media supply tube, remove the back base panel as well as the upper and lower sidecar panels.

Step 2: Disconnect the media supply tube from the media hopper

Using a slotted screwdriver, loosen the hose clamp from the rear of the media valve to release the media supply tube. If you are fully removing or replacing the media supply tube, disconnect the ground cable or fully remove the hose clamp.

Step 3: Disconnect the media supply tube from the blast gun

Inside the blasting chamber, use a slotted screwdriver to loosen the hose clamp securing the media supply tube to the blast gun.

Step 4: Disconnect the media supply tube from the blasting chamber

On the right side of the blasting chamber, loosen the hose gland securing the media supply tube.

Step 5: Reconnect the media supply tube

Slide the media supply tube onto its fittings on the media hopper and blast gun. Using a slotted screwdriver, tighten both hose clamps. Secure the hose gland to its fitting on the right side of the blasting chamber.

Overview: Access the regurgitator line and its attachment points to the media valve and blasting chamber to inspect or replace it.

Step 1: Access the tubing

To access the regurgitator line, remove the back base panel as well as the upper and lower sidecar panels.

Step 2: Disconnect the regurgitator line from the media valve

Using a slotted screwdriver, loosen the hose clamp from the top of the media valve to release the regurgitator line.

Step 3: Disconnect the regurgitator line from the blasting chamber

Using a slotted screwdriver, loosen the hose clamp from the rear of the blasting chamber to release the regurgitator line.

Step 4: Reconnect the regurgitator line

Slide the regurgitator line onto its fittings on the media valve and blasting chamber. Using a slotted screwdriver, tighten both hose clamps.

Overview: Check the five pressure tap tubes and determine which one you are inspecting.

There are five pressure sensors in the Fuse Blast that are used to check for clogs or leaks in the system. These all run from the motherboard to the following positions, labeled 0–4 on both ends of the tubes:

0. Cyclone separator inlet
1. Media metering valve
2. Post-air filter
3. Pre-air filter
4. Waste hopper

Follow the section below for the pressure tap tube you are inspecting or replacing.

Overview: Access the pressure tap tubing (position 0) to inspect or replace it.

Step 1: Access the tubing

To access the cyclone separator pressure tap tubing, remove the upper and lower sidecar panels.

Step 2: Inspect the tubing at the electronics box

Inspect the pressure tap tubing labeled 0 on the electronics box. If the tubing needs to be removed or replaced, pull it off the plastic fitting. If necessary, cut it at the fitting before replacing it.

Step 3: Inspect the tubing at the cyclone separator

Inspect the pressure tap tubing labeled 0 on the top of the cyclone separator. If the tubing needs to be removed or replaced, pull it off the brass fitting. If necessary, cut it at the fitting before replacing it.

Step 4: Inspect the tubing within the electronics box

If necessary, remove the four T20 Torx screws securing the electronics box cover and inspect the internal electronics box pressure tube labeled 0. If the tubing needs to be removed or replaced, pull it off the fittings. If necessary, cut it at the fittings before replacing it.

The components in the electronics box are delicate. Take special care not to damage the motherboard, and ground yourself before handling electronics in the Fuse Blast.

Overview: Access the pressure tap tubing (position 1) to inspect or replace it.

Step 1: Access the tubing

To access the media metering valve pressure tap tubing, remove the back base panel and the upper and lower sidecar panels.

Step 2: Inspect the tubing at the electronics box

Inspect the pressure tap tubing labeled 1 on the electronics box. If the tubing needs to be removed or replaced, pull it off the plastic fitting. If necessary, cut it at the fitting before replacing it.

Step 3: Inspect the tubing at the media metering valve

Inspect the pressure tap tubing labeled 1 on the media metering valve, to the left of the filter box when facing the machine from the rear. If the tubing needs to be removed or replaced, pull it off the brass fitting. If necessary, cut it at the fitting before replacing it.

Step 4: Inspect the tubing within the electronics box

If necessary, remove the four T20 Torx screws securing the electronics box cover and inspect the internal electronics box pressure tube labeled 1. If the tubing needs to be removed or replaced, pull it off the fittings. If necessary, cut it at the fittings before replacing it.

The components in the electronics box are delicate. Take special care not to damage the motherboard, and ground yourself before handling electronics in the Fuse Blast.

Overview: Access the pressure tap tubing (position 2) to inspect or replace it.

Step 1: Access the tubing

To access the post-air filter pressure tap tubing, remove the back base panel and the upper and lower sidecar panels.

Step 2: Inspect the tubing at the electronics box

Inspect the pressure tap tubing labeled 2 on the electronics box. If the tubing needs to be removed or replaced, pull it off the plastic fitting. If necessary, cut it at the fitting before replacing it.

Step 3: Inspect the tubing at the filter cabinet

Inspect the pressure tap tubing labeled 2 at the top-left of the filter cabinet, when facing the machine from the rear. If the tubing needs to be removed or replaced, pull it off the brass fitting. If necessary, cut it at the fitting before replacing it.

Step 4: Inspect the tubing within the electronics box

If necessary, remove the four T20 Torx screws securing the electronics box cover and inspect the internal electronics box pressure tube labeled 2. If the tubing needs to be removed or replaced, pull it off the fittings. If necessary, cut it at the fittings before replacing it.

The components in the electronics box are delicate. Take special care not to damage the motherboard, and ground yourself before handling electronics in the Fuse Blast.

Overview: Access the pressure tap tubing (position 3) to inspect or replace it.

Step 1: Access the tubing

To access the pre-air filter pressure tap tubing, remove the back base panel and the upper and lower sidecar panels.

Step 2: Inspect the tubing at the electronics box

Inspect the pressure tap tubing labeled 3 on the electronics box. If the tubing needs to be removed or replaced, pull it off the plastic fitting. If necessary, cut it at the fitting before replacing it.

Step 3: Inspect the tubing at the filter cabinet

Inspect the pressure tap tubing labeled 3 at the bottom-left of the filter cabinet, when facing the machine from the rear. If the tubing needs to be removed or replaced, pull it off the brass fitting. If necessary, cut it at the fitting before replacing it.

Step 4: Inspect the tubing within the electronics box

If necessary, remove the four T20 Torx screws securing the electronics box cover and inspect the internal electronics box pressure tube labeled 3. If the tubing needs to be removed or replaced, pull it off the fittings. If necessary, cut it at the fittings before replacing it.

The components in the electronics box are delicate. Take special care not to damage the motherboard, and ground yourself before handling electronics in the Fuse Blast.

Overview: Access the pressure tap tubing (position 4) to inspect or replace it.

Step 1: Access the tubing

To access the waste hopper pressure tap tubing, remove the upper and lower sidecar panels.

Step 2: Inspect the tubing at the electronics box

Inspect the pressure tap tubing labeled 4 on the electronics box. If the tubing needs to be removed or replaced, pull it off the plastic fitting. If necessary, cut it at the fitting before replacing it.

Step 3: Inspect the tubing at the waste hopper

Inspect the pressure tap tubing labeled 4 above the waste hopper, to the left of the cyclone separator. If the tubing needs to be removed or replaced, pull it off the brass fitting. If necessary, cut it at the fitting before replacing it.

Step 4: Inspect the tubing within the electronics box

If necessary, remove the four T20 Torx screws securing the electronics box cover and inspect the internal electronics box pressure tube labeled 4. If the tubing needs to be removed or replaced, pull it off the fittings. If necessary, cut it at the fittings before replacing it.

The components in the electronics box are delicate. Take special care not to damage the motherboard, and ground yourself before handling electronics in the Fuse Blast.

Overview: After replacing the blower fan, power on the machine and perform final checks.

Step 1: Reinstall machine panels

Mount and secure any panels you removed to inspect or replace tubing.

Step 2: Power on the machine

Connect the power cable to the machine and the power supply. Flip the power switch on the back of the machine to the ON position. The machine initializes.

Step 3: Test the repair

Reconnect the compressed air source if you previously disconnected it. Test the various functions of the machine to ensure that it operates normally and does not make any unusual sounds.