TROUBLESHOOTING

Most instances where the DEMI 800 Series is not performing to expectations can be easily resolved by simple troubleshooting procedures.
Below is a list of issues that may arise during post-processing operations.

1. There is a decrease in detergent flow from the agitation pump

• Step 1) Verify that the agitation pump is running.
• Step 2) Press the INFORMATION button to access the Hardware Status screen and locate the system pressure.
• Step 3) Check the tank drain and screen filter for residue buildup and clean as necessary.
• Step 4) Inspect the cartridge filter inside the DEMI 800 Series cabinet. Clear away any obstructions or blockages. See Clean Cartridge Filter for information about accessing and cleaning the filter.

2. The button is active and the DEMI 800 Series will not operate

• Review the ALARMS & WARNING section to see the various alarm codes and how to clear them.

3. The DEMI 800 Series touch screen is not reacting properly.

• If the DEMI 800 Series touchscreen is behaving abnormally, navigate to the Settings screen and initiate Shutdown. Then, press the POWER button to shut the system down, wait 20 seconds, then press the POWER button to power the system back up.
  This action reboots the computer system and should return the touchscreen to normal operation. If this does not resolve the issue, contact PostProcess support.

4. The internal passages of the part are not fully cleaned.

• If the internal passages of a particular printed part are not being fully cleaned during post-processing, there are a few steps that can be taken to improve the support removal process.
• Step 1) It is important for the detergents to reach the areas that need cleaning. When a part with deep channels or blind holes is being processed, try different agitation levels to ensure that the internal cavities of the part are being exposed to higher energy levels and detergent.
• Step 2) For the detergents to work properly, the surface area to be cleaned must be accessible to the detergent. To aid the removal of support, it is beneficial to prep internal cavities and other areas with dense support build-up. Consider removing large accessible volumes of support by hand, or clearing a pathway within internal cavities for increased detergent accessibility.

5. Water or liquids are leaking inside of or around the DEMI 800 Series.

• During manufacturing, all the DEMI 800 Series plumbing fixtures were affixed and sealed using industrial-grade materials. If any of the plumbing connections, pipes, or hoses begin to leak, shut down the DEMI 800 Series and contact PostProcess Support for further instruction.

6. The DEMI 800 Series is not stationary or stable

• The DEMI 800 Series was designed with casters with adjustable feet that can be lowered and locked in place to temporarily make the machine stationary. To prevent unwanted movement, pull out the metal ratchet on each caster, adjust them to the desired height and lock the wheels into place by pushing the ratchet back into the caster.

7. Where can I find the DEMI 800 Series serial number?

• The serial number can be found on the right rear panel near the back of the machine (highlighted in green) and will resemble the ID plate as shown below.
  

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  Location of Data Plate	Example Data Plate Details

*The above nameplate is for example purposes only. Refer to the Site Preparation Guide for full details.