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TRANSCRIPT
Hi, my name is Paul Goble. I’m the technical project manager here at BlastOne, and today we’re going to be walking through the MistBlaster Combo Skid.
A few things we’re going to go over are the actual MistBlaster cabinet box. This box is mounted to the outside of the pot to inject water into your blast hose.
Inside the box, you’ll find air-actuated ball valves for water flow, allowing mist blast and wash down functions. There’s also a 5 to 1 pump that pushes water to these valves. Other components include the auto air valve, which activates when you press the deadman trigger for mist blast, dry blast, wash down, or blow down functions, helping to convey abrasive, water, and air through the system.
On the MistBlaster cabinet, we have emergency features like the E-Stop push-pull and controls for blow down, wash down, dry blast, and mist blast functions. You can adjust the water flow for mist blast, while wash down has a fixed water amount. The system is bi-powered, using either air or an electric actuated deadman system. There is also a ball valve for priming the water pump.
The Combo Skid includes a breathing system to provide clean air and monitor carbon monoxide levels with a GX4 monitor. The GX4 alerts you at 10 ppm of CO, giving you time to evacuate if needed. It runs on 12 volts or 110 volts with supplied battery clips.
The Radex system on this unit is a two-outlet model with a 125 psi max rating. Filters should be changed every three months or 400 hours. Attached to the Radex is a deliquescent air dryer with salt tablets to remove moisture, and an after-cooler to further cool and dry the compressed air before it enters the pot.
The Combo Skid injects water into the blast hose rather than mixing it with the abrasive, encapsulating the abrasive with water before it hits the substrate, minimizing dust. The 50-gallon tank lasts about a full day for one person, using about a pint of water per minute for mist blast.
Common issues include:
- No water through the nozzle, typically due to pump cavitation, which can be resolved by priming the pump with the ball valve.
- Excessive abrasive discharge or inability to shut down, often due to the auto air valve being blocked by abrasive, preventing the plunger from moving correctly. Cleaning or clearing the auto air valve can resolve this.
- TeraValve issues, such as the plunger sticking open due to abrasive friction or a ruptured diaphragm, which can be identified by air blowing continuously from the breather vent.
For troubleshooting water flow, decouple and clear any clogged lines.
If you have any more questions, call or click the link below.
