Evoqua Filter Press FAQs
What territory does LS&P cover for Evoqua?
Texas, Oklahoma, Louisiana, Southern Mississippi and Florida.
Can I order Evoqua spare parts from LS&P?
Yes, LS&P will make sure you get the right part for your specific piece of Evoqua equipment.
How can I tell when my filter cloths are dirty?
Usually you will need a longer cycle time to achieve the same cake dryness. You may also notice sloppy cake or discharge flow is less.
How do I clean my filter cloths?
How long do filter cloths typically last?
They could last as little as six months or as long as five years. It depends on many things:
- Your process.
- How often you run your filter press.
- What you run through your filter press.
- How well you maintain your filter cloths.
It‘s probably time to change your cloths when you see abrasion, stretchiness, folding, holes, poor cake, dirty filtrate or when conventional cleaning techniques does not restore your filter press performance.
How do I change my filter cloths?
How do I change my end plate cloth?
Unlike intermediate filter cloths, the end-plate (head and tail) cloths do not have a sewn-in center-feed eye. The endplate cloths would be installed as described in the previous question; however, the head-plate cloth must have the center-feed hold cut before installation.
To do this, remove the old head cloth by first removing the center-feed assembly‘s clip nut. Then, tap the corners of the new end-cloth into the head-plate making sure it is positioned correctly. Cut out the cloth around the center-feed pipe using the equivalent of a hot knife, soldering gun or similar. This will seal the edges of the cut to prevent possible fraying of threads in the cloth. After the hole has been cut, finish installing the head cloth, then re-attach the clip nuts.
When should I change my gaskets?
It‘s a good idea to change your gaskets whenever you change your filter cloths. Also, if you are getting excessive leakage out of the press while maintaining correct hydraulic closure pressure, this may be a sign that it is time to change your gaskets.
Gasket life depends on many factors, such as length of filtration cycle, temperature, and excessive closing force. Gasket replacement should take place if the gasket appears to be delaminating or shredding into small particles. Also, if excessive temperatures exist under extended cycle times, the Nordel elastomer (standard gasket material) may go into additional cure, causing it to harden slightly. If the gasket life of the Nordel elastomer is unsatisfactory, contact Langley Separation and Process regarding a suitable USFilter replacement.
How do I change my gaskets?
How do I change my center-feed pipe assembly?
How often should I change the oil in my hydraulic system?
Under normal conditions, you should usually change your hydraulic oil once a year, or every 2,000 operating hours. Under severe conditions, the oil will need to be changed more frequently. The following chart is a guideline for maintenance of your hydraulic power unit:
| Item | Frequency | Procedure |
|---|---|---|
| Clamp Pressure | Daily | Check for correct clamp pressure |
| Relief Valve | Quarterly | Check for proper setting |
| Oil Level | Weekly | Check for proper level |
| Oil Filter | Monthly | Inspect and/or clean |
| Oil Filter | Yearly | Replace |
| Hydraulic Oil | Yearly | Replace |
How often should I change the hydraulic filter?
Whenever you change your oil, you should change your filter.