Hypertherm EcoSift, Operator'S Manual

Page: 118 / 188

Troubleshooting
Tr
oubleshooting
118 EcoSift Operator Manual 809500
Uncontrolled shutdown
An uncontrolled shutdown can cause damage to the system or problems with the operation of the EcoSift.

Wet abrasive remains on the primary screen.

Wet abrasive in the dryer box can spill water onto the heating elements.

The abrasive pump can have abrasive in the diaphragm.

The abrasive hoses contain abrasive.
After an uncontrolled shutdown
1. Turn
ON
the dryer blower.
Abrasive flows from the dryer.
2. Wait 2 minutes.
3. Turn
ON
the heating elements to add heat to the system.
4. Wait 1 minute.
5. Turn
ON
the primary shaker.
6. Wait 3 minutes.
The abrasive is shaken off of the primary screen.
7. Turn
OFF
the primary shaker, the elements, and the dryer blower.
8. Start the system normally.
9. When the temperature is 160.0°C (320°F), make sure that the abrasive pump pressure gauge needle
changes. A steady needle indicates that the abrasive pump is not cycling.
Do not use the emergency stop knob to turn
OFF
the EcoSift in nonemergency situations.
The system does not do a normal shutdown, and wet abrasive is left on the primary screen and in
the abrasive pump and hoses, which can cause a blockage.