Troubleshooting
Problem | Cause | Solution |
|
|
|
| The pneumatic blast control circuit | See Pneumatic Blast Control Circuit, |
| is malfunctioning. | page 27. |
The blast control is not | The main air regulator is stuck | See Repairing the Main Air Regulator, |
engaged but blasting still | open. | page 28 (EQ600 – Kit 17C131, EQ300 |
occurs. |
| – Kit 17C129). |
| The blast control tubing is not | Ensure air tubing is routed and connected |
| connected properly. | properly. See Hose Schematic, page 39. |
| Electric blast control circuit is | Inspect hose cable for damaged or |
| malfunctioning. | shorted wiring. Check battery and control |
|
| panel connections. Ensure DC power |
|
| source is 12V. Check 3A fuse inside |
|
| control panel and replace it if necessary. |
|
| Check current flow in circuit, if current |
|
| exists, replace relay (EQ5179). |
| Pneumatic blast control circuit is | See Pneumatic Blast Control Circuit, |
| malfunctioning. | page 27. |
The blast spray pattern is | Incorrect abrasive is being used. | Use the correct abrasive. See |
irregular. |
| Metering Valve Settings, page 16. |
| The pot does not have a sufficient | Refill the pot with abrasive. See |
| amount of abrasive. | Refilling the Pot with Abrasive, page 18. |
| The pot pressure setting is | Perform the pressure relief procedure |
| incorrect. | (see Pressure Relief Procedure, page 8 ) |
|
| and reset pot pressure (see |
|
| Setting Up the Equipment, page 11). |
| The | Make sure the |
| air when the pot is filled. | is working. Perform the Auto- |
|
| Vent cleaning procedure (see |
|
| Cleaning the |
| The diaphragm valve is | Perform the diaphragm |
| malfunctioning. | flush procedure (see |
|
| Flushing the Diaphragm Valve, page 29). |
|
| If flushing does not solve problem, see |
|
| Repairing the Diaphragm Valve, page 30. |
| There is blockage inside the pot or | Make sure the ball valve is closed, then |
| inside the abrasive hose between | disconnect the |
| the pot and the panel. | the abrasive ball valve slightly and make |
|
| sure abrasive is flowing form the abrasive |
|
| hose. If not, follow the shut down |
|
| procedure (see Shutting Down, page 19). |
|
| Thoroughly flush the pot and the media |
|
| hose after draining media and water. |
24 | 334667B |
