Flushing and Pickling Services

The interior cleaning of the Hydraulic Pipes is carried out with acid cleaning and afterward with oil completely by our service team up to NAS 5 level.

Pollution Types

Air

That

Solid Parts

Chemical Reactions

Pollution in Hydraulics

Pollution Type - Air

Possible Causes;

Leakage of Seals in Suction Filter

Leakage of Suction Line at Connection Point to Suction Filter or Pump

Damage of Discharge Effect on Pilot Piston in Internal Gear Pump

Felt Destroyed by Micro-Diesel Effect (Self-Ignition of Air-Gas Mixture)

Pollution in Hydraulics

Pollution Type - Water

Water Molecules cloud the fluid

Negative Effect:

Air Separation Capacity

Foaming

Lubrication Performance

Accelerates: Corrosion and Wear

Pollution in Hydraulics

Pollution Type - Solid Parts

Possible Causes

Solid Particles Enter the System for the Following Reasons

During Installation or Repair

From Dust Seals in the Cylinder

From Insufficient Ventilation Covers

When Filling or Refilling

It causes sudden failures.

Solid Parts in the System Occur Due to Wear.

All parts in the system reduce the efficiency and life of the components in the system.

Pollution in Hydraulics

Pollution Type - Chemical Reaction

Oil Aging

Parts That Occur As A Result Of Oil Aging Fill The Filter.

From Oxidation Procedure and Polymerization Procedure Results

Source: Krauss Maffei

Soot and Broken Pieces

They Stick to Components in the System

From Advanced Fat Aging Results

Source: Krauss Maffei

Oil Incompatibility

They combine to form large chunks that clog the filter

Combining and Formation of Large Parts Occurs as a Result of the Combination of Different Oils

Source: Krauss Maffei

Oil Aging

Possible Causes:

Excessive Pollution

Oil Mix

Very High Temperatures

Bad Metal Oil Numbness

Parts of the Pump Shaft Connection as a Result of Oil Aging

Source: Krauss Maffei

Pollution in Hydraulics

Pollution Type - Small Part Pollution

Development of Small Part Contamination - Small Part Contamination Occurs as a Result of a Chain Reaction

When Small Parts Are Filtered, They Affect The Surfaces They Contact, They Destroy These Surfaces, And Small Parts Detach From The Surfaces

It Occurs Due To Pieces Breaking Off From Parts Accumulated On The Surface.

(Photo: Gear Pump Bearing)

Erosion Caused by High Small Part Pollution in Shaft of Vane Pump.

What Causes Bearing Failures?

Creates a Pit in the Surface

Material Weakens On Deformed Surface

Pitting Occurs on the Bearing Surface

Bearing Failure Occurs

Filter Technology
Filter's Function

Features Working Filter Protector Filter Ventilation Filter
Filtering
Purpose of Wear Protection:
- Reaching the Required Cleaning Level Functional Protection:
- Protection of Pollution Sensitive Components
- Components with High Probability of Deformation
Protection of the Tank During Ventilation
Protection from Environmental Factors
Filtering
Level According to Required Cleaning Level Depending on the Sensitivity of the Components to be Protected to Pollution, At Least As Much as Working Filters
Structure - With By-Pass Valve
- Low Differential Pressure Resistant Element
- Contamination Indicator - High Differential Pressure Resistant Filter Element without By-Pass Valve
- Pollution Indicator is required Optionally:
- Vacuum Indicator
- Twin Check Valve
Assembly
Location to High Flow Rate at Main or Closed
By Circuit - VOR der zu schützenden to Component
- NACH der ausfallgefährdeten Component with Tank's Top or Return Filter
Dependent Size:
- Pressure drop
- Required Level of Cleaning
- Oil Flow in the System
- Oil Used in the System
- External Factors Affiliated:
- Pressure drop
- Maximum Oil Flow
- Depending on the Oil Used in the System:
- Pressure drop
-Maximum Air Flow
-External factorsFonksiyonu:  

Suction Filter

It is a Protective Filter for Pump with 40 - 100 µm Filter Type Filter Element.

It is a Filter Working with Paper Filter Elements up to 16 µm.

Return Filter

Function:

Ensuring the Cleaning Level of Oil at the Required Level (Working Filter)

Return-Suction Filters

Function:

Filtration of Returning Oil in an Open Circuit System.

Providing Filtered Oil to the System in Closed Circuit Systems.

High Pressure Filters

Function:

Direct Protection of Components (Protective Filter)

Ensuring the Level of Cleaning Required (Employee Filter)

Ventilation Filters

Function:

During the Ventilation of the Air, Preventing the Pollution from the Environment from Entering the System.

Option: It Reduces Cavitation Hazard As It Provides Preloaded Air In The Tank.

Closed Circuit Filters (Off-Line Filter)

Function:

Providing the Required Oil Cleaning Level (Working Filter), If There is a Protective Filter in the System

An Additional Working Filter

Firstly, Cleaning the Oil Used During Oil Filling or Oil Change in the System

Cyclical Cleaning

Pollution Indicators

Indicates the Contamination Level in the Filter over Time (By Measuring Resistance Pressure or Differential Pressure)

Fine Filter Selection

According to ISO 16889, the multi-pass test determines the number of particles in the filter inlet and outlet according to the specific particle size. This allows the Beta value of the filter to be calculated according to the number of particles in the filter inlet and outlet.

Hydraulic Oil Cleaning Classes;

ISO 4406 and NAS 1638

They are the Most Used Standards of Oil Pollution Measurement Standards.

It is used to define the amount and dimensions of hydraulic fluids in two standards.

ISO 4406: 1999 Indicates Particle Amount

> 4 µm (c),

> 6 µm (c) and

> 14 µm (c)

As Code

The Level of Oil Cleanliness Required Depends On Other Variables Apart from Working Pressure;

Desired Machine Life

Repair and Spare Parts Price

System Downtime Cost During Maintenance

Required Level of Safety in the System

If any of the above items is important, the oil cleanliness level should be increased one more step.

If two or more criteria are important, the oil cleanliness level should be increased by two more steps.

The products we provide service;

Service Truck (Fully equipped for Filtration and Flushing)
Oil Contamination (Cleaning) Measuring devices
Oil cleanliness class (ISO 4406: 99, ISO 4406: 87, NAS 1638 and SAE AS 4059 standards)
Water in oil (theoretical ppm)
Oil saturation point (0 ~ 100%)
Dynamic viscosity (18 ~ 700 mPas)
Dielectric coefficient (1-10)
Temperature (0 ~ 70 ° C)
Oil to water separation units
Water retaining filters and filter containers
Mobile filtration units (TMFU)
Flushing tanks (in variable sizes and capacities)
Motor-pump couplings
Heaters
Filter containers
Pickling tanks (stainless and plastic)
Pickling fluids
Acid pumps
Acid filters
Various indicators and fasteners