What to Send for a Quote

Enough to start a quote:

The machine’s nameplate: a photo of it, or the make, model and serial number.
The paper size, or a photo of the paper in the machine beside a ruler. Send photos on WhatsApp to +91 99400 49505 or by email to [email protected].
How many pieces one full change takes.
The quantity, and the date you need it by.

How an Electrostatic Oil Cleaner Uses Filter Paper

Inside an electrostatic oil cleaner (ELC) the oil flows between electrode plates held at a high voltage. The field draws very fine solid particles and insoluble oxidation products, the soft deposits that can form varnish, out of the oil, and the filter paper between the plates holds them. It collects what is suspended in the oil; oxidation products still dissolved in it are not necessarily removed.

The paper is where the dirt ends up, so it fills as the oil gets cleaner, and the fuller it is, the less the machine collects. Whether a machine then keeps running, warns or stops depends on its design, so follow its instructions for when to change the paper.

It suits oils that are poor conductors of electricity and nearly dry, such as mineral hydraulic, lube, turbine and gear oils. It does not remove water, so free water is removed first, and water-based fluids are not suited to it.

Our own electrostatic machines work on our oil filtration jobs, and changing their paper is part of that work.

We are a supplier, not the maker.

Drawing: filter paper pleated between the electrode plates of an electrostatic oil cleaner, with oil flowing between the plates and particles held on the paper (schematic, not to scale)

Where It Is Used

Electrostatic cleaning is used where very fine dirt and varnish cause trouble, for example on:

Turbine lube oil, where varnish can make control and trip valves stick.
Hydraulic systems with proportional and other fine-clearance valves, which fine dirt and varnish can make sluggish.
Moulding machines and presses whose oil runs warm for long hours.
Compressor and gearbox oils kept in service for a long time.

Before We Select the Paper

Paper cut for one machine can be the wrong size, thickness or fit for another, so we match it to the model, not only to the sheet size. Send photos on WhatsApp to +91 99400 49505 or by email to [email protected]. What our quotation will confirm: the item we propose and its specification, what we matched it to, the quantity and availability.

Before we select the paper
Detail	Why it matters
Machine make, model and serial number	Paper size and fitting differ from model to model.
A photo of the nameplate	Identifies the exact build of the machine.
Paper size: length, width and thickness	If the size is not known, a used piece or a photo of the paper in place beside a ruler.
How the paper is fitted	How it is folded and held between the electrodes; a photo of the opened machine, taken with it switched off and isolated, shows this.
Pieces for one full change	So a full set can be quoted, where the instructions ask for all the paper to be changed together.
The oil and its condition	Very dirty or varnished oil fills the paper faster, so expect to change it more often at first.
Quantity and required date	Lets us confirm availability and lead time.

Changing and Storing the Paper

The machine works at a high voltage. Switch it off and isolate it electrically before you open it, and let the high-voltage parts discharge as its instructions set out. Isolate its oil lines, release any pressure, drain the collector and let hot oil cool, following the machine’s instructions and your plant’s rules.

Take the full paper out whole, so that the dirt it holds leaves with it. Fit the new paper to the machine’s instructions, without creases or tears, rather than simply as the old paper sat: it may not have been fitted correctly. Treat used paper as oily waste, under your plant’s rules.

Keep new paper sealed and dry until it is fitted: damp paper does not collect well.

Example

From Our Invoices

In 2025, filter paper for electrostatic machines was billed with our electrostatic filtration jobs at a rubber hose plant. In 2022, filter paper was billed with our electrostatic filtration job at a sugar mill in Kallakurichi district.

Questions Buyers Ask

Is electrostatic cleaning the same as filtering?

No. A filter element holds particles in its media and is rated by the size it holds. An electrostatic cleaner can also collect particles finer than most elements are rated for, and insoluble oxidation products that can form varnish.

Does an electrostatic cleaner remove water?

No. It needs nearly dry oil. Free water is removed first, for example with a vacuum dehydration (LVDH) machine or a centrifuge.

How often is the paper changed?

When it is full; how soon depends on how much dirt and varnish the oil carries. Machines differ in how they show full paper, so go by the machine’s instructions; an oil test shows whether the oil is still getting cleaner.

Can you run an electrostatic machine on our oil instead?

Yes. We bring our own electrostatic machine and run it on your oil, as part of our oil management and purification work.

Do you maintain electrostatic oil cleaners?

Yes. Under our electrostatic oil cleaner AMC we maintain the machine you have, whatever its make, through the year; new filter paper is charged at actuals.

Do you keep stock?

Availability is confirmed with each quotation.

What is the price?

Prices depend on the paper, the quantity and delivery, so we quote for each enquiry.

Does your invoice show the HSN code?

Yes. Our GST invoice shows the HSN or SAC code for each line.