An auto shop coolant and solvent pump (often found on parts washers or specialized fluid transfer systems) is designed to circulate cleaning solvents or deliver engine coolant safely. Because automotive chemicals can be flammable, corrosive, or toxic, proper setup and safety are critical.
Here is how to safely and effectively operate a fluid pump in an auto shop:
1. Pre-Operation & Safety Checks
Before turning anything on, complete these foundational safety steps:
- Wear personal protective equipment (PPE): Always wear chemical-resistant gloves, safety glasses or a face shield, and a shop apron.
- Check chemical compatibility: Ensure the pump is rated for the specific fluid you are using. Never put flammable solvents (like gasoline) into a standard parts washer pump unless it is explicitly explosion-proof.
- Inspect hoses and cords: Check for cracked hoses, loose clamps, or frayed electrical cords to prevent leaks and electrical shocks.
2. Setting Up the Pump
Most shop pumps sit inside or attached to a reservoir tank (like a parts washer drum).
- Verify fluid levels: Ensure the pump intake is completely submerged in the fluid. Running a pump "dry" will quickly overheat and destroy the motor or impellers.
- Position the nozzle/spigot: If using a parts washer pump, position the flexible nozzle or brush over the sink basin so fluid doesn't spray onto the shop floor.
- Check the filter: Ensure the intake screen or filter is clean so metal shavings or debris from previous jobs don't clog the pump.
3. Operating the Pump
- Turn on the power: Switch the pump on using a sealed, moisture-resistant switch (often a foot switch or a sealed toggle on the side of the unit).
- Adjust the flow rate: If your pump has a control valve, open it slowly until you get a steady, manageable stream. High pressure can cause dangerous splashing.
- Wash or transfer:
- For parts washing: Direct the solvent stream over the automotive parts, using a parts brush to scrub grease away.
- For fluid transfer (coolant): Insert the discharge hose into your catch pan or vehicle reservoir before turning the pump on.
4. Post-Operation & Cleanup
- Turn off the pump immediately: Do not leave the pump running when you are done working.
- Drain the lines: Let residual fluid drain back into the tank from the nozzle or brush to avoid drips.
- Close the lid: If you are using a parts washer, close the lid. Most have a fusible safety link that automatically snaps the lid shut in case of a fire to smother the oxygen.