Introduction
This manual provides essential instructions for the proper installation, operation, and maintenance of your Cim-Tek 250A-30 Particulate Fuel Dispenser Filter. Adhering to these guidelines will ensure optimal performance and longevity of the filter. Please read this manual thoroughly before installation and use.
Safety Information
- Always wear appropriate personal protective equipment (PPE) such as gloves and eye protection when handling fuel and filters.
- Ensure the fuel dispensing system is depressurized and shut off before attempting any installation or maintenance.
- Fuel is highly flammable. Keep ignition sources away from the work area.
- Dispose of used filters and fuel-contaminated materials according to local environmental regulations.
- If you are unsure about any step, consult a qualified technician.
Product Overview
The Cim-Tek 250A-30 is a 30-micron particulate filter designed for fuel dispensers. It utilizes cellulose media to effectively remove solid contaminants from various fuel types. This filter is suitable for:
- Gasoline and Ethanol blends up to 25% (E25)
- Methanol blends up to 15% (M15)
- Diesel
- Ultra-Low Sulfur Diesel (ULSD)

Figure 1: Cim-Tek 250A-30 Particulate Fuel Dispenser Filter. This image displays the cylindrical white filter with red branding. The label clearly indicates "CIM-TEK FILTRATION", "REMOVE PARTICULATE", "CELLULOSE MEDIA", and lists compatible fuels: "GASOLINE AND ETHANOL BLENDS UP TO 25% | METHANOL BLENDS UP TO 15% | DIESEL | ULSD". It also highlights "30 MICRON" filtration and the model "250A-30 PART # 70089".
Setup and Installation
Pre-Installation Checks:
- Verify that the filter model 250A-30 is compatible with your fuel dispensing system.
- Inspect the filter for any signs of damage before installation.
- Ensure you have the necessary tools and replacement gaskets/seals.
Installation Steps:
- Shut Down System: Turn off the fuel dispenser and any associated pumps. Depressurize the system according to the dispenser manufacturer's instructions.
- Remove Old Filter: Carefully unscrew and remove the old filter. Be prepared for residual fuel spillage and have a suitable container for collection.
- Clean Housing: Clean the filter housing and ensure the sealing surface is free from debris or old gasket material.
- Lubricate Gasket: Lightly lubricate the new filter's gasket with clean fuel or a compatible lubricant.
- Install New Filter: Screw the new Cim-Tek 250A-30 filter onto the housing by hand until the gasket makes contact with the sealing surface.
- Tighten Filter: Tighten the filter an additional 1/2 to 3/4 turn after gasket contact, or as specified by the dispenser manufacturer. Do not overtighten.
- Check for Leaks: Restore pressure to the system and carefully check for any leaks around the filter seal. Address any leaks immediately.
- Purge Air: Operate the dispenser briefly to purge any air from the system.
Operating Instructions
Once installed, the Cim-Tek 250A-30 filter operates automatically to remove particulate matter from the fuel. Monitor fuel flow rates and dispenser performance regularly. A noticeable decrease in fuel flow or an increase in dispensing time may indicate a clogged filter requiring replacement.
Maintenance
Filter Replacement:
The Cim-Tek 250A-30 filter should be replaced when a significant reduction in fuel flow is observed, or according to the fuel dispenser manufacturer's recommended service interval, whichever comes first. Regular replacement ensures consistent fuel quality and protects dispensing equipment.
Disposal:
Used fuel filters contain hazardous materials. Dispose of them in accordance with all local, state, and federal environmental regulations. Do not discard used filters with general waste.
Troubleshooting
Reduced Fuel Flow:
- Symptom: Fuel dispenser delivers fuel slowly or stops flowing.
- Possible Cause: Clogged filter.
- Solution: Replace the Cim-Tek 250A-30 filter.
Fuel Leakage:
- Symptom: Fuel observed leaking from around the filter housing.
- Possible Cause: Improperly seated gasket, damaged gasket, or loose filter.
- Solution: Shut down the system, depressurize, and re-tighten the filter. If leakage persists, remove the filter, inspect the gasket for damage, replace if necessary, and re-install.
Specifications
| Brand | Cim-Tek |
| Model Number | 250A-30 |
| Part Number | 70089 |
| Filtration Rating | 30 Micron |
| Filter Media | Cellulose |
| Fuel Compatibility | Gasoline (up to E25), Methanol (up to M15), Diesel, ULSD |
| UPC | 662537700893 |
Warranty Information
Cim-Tek products are manufactured to high-quality standards. For specific warranty terms and conditions applicable to the 250A-30 filter, please refer to the official Cim-Tek website or contact their customer service directly. Keep your purchase receipt as proof of purchase.
Customer Support
For technical assistance, product inquiries, or further information regarding the Cim-Tek 250A-30 filter, please contact Cim-Tek customer support through their official website or the contact details provided with your product packaging.