Your Quick-Start Guide to the CUDA SJ-15

The CUDA SJ-15 is one of the most popular top-load aqueous parts washers in heavy industrial shops across the Midwest — and for good reason. It uses patented water-propelled spray arm technology with 23 nozzles, a 350-lb load capacity, and zero flammable solvents. It cleans like an industrial dishwasher, not a solvent tank.

Whether your team just received a new SJ-15 or you need a refresher, we put together this training video that covers everything from first startup to ongoing maintenance. Watch it here:

Below, we’ve broken out the key operating procedures covered in the video for quick reference.

Before You Start: Pre-Operation Checks

Every shift should begin with these basics:

  • Check the low water light. If it’s on, add water until it turns off. Proper water level protects both the heating element and the pump.
  • Allow 2 to 4 hours for heat-up. The cleaning solution should reach at least 150°F before running a wash cycle. Running below temperature reduces cleaning effectiveness significantly.
  • Visually inspect the spray bar. Manually rotate it before loading to make sure nothing is blocking its movement.

Loading the SJ-15

  • The SJ-15 has a working load limit of 300 lbs. Do not overload the basket — overloading prevents proper spray rotation and reduces cleaning quality.
  • Position parts so the spray solution can reach every surface. Make sure all items have full spray coverage.
  • Before starting, manually rotate the spray bar one more time to confirm clearance with the loaded parts.

Running a Wash Cycle

  1. Close the lid completely.
  2. Set the timer between 5 and 60 minutes, depending on how heavily soiled the parts are.
  3. For heavier contamination, repeat the cycle or rotate parts between cycles for improved exposure.
  4. Always confirm the lid is fully closed before starting — the SJ-15 has a safety interlock, but good habits matter.

Safety: What Every Operator Needs to Know

The SJ-15 runs hot water and industrial detergent under pressure. These precautions are non-negotiable:

  • The lid is always hot during operation. Never attempt to open the machine while it is running.
  • After the timer ends, wait at least 30 seconds before opening the lid.
  • Stand to the side when opening to avoid steam exposure.
  • Always wear gloves and safety glasses when loading, unloading, or handling parts.
  • Parts will be hot immediately after cleaning — use proper PPE before handling.

Detergent Management

  • Add one scoop of detergent approximately once per week under normal use.
  • Only add detergent after the water has reached 150°F.
  • Foaming may indicate the solution temperature is too low or that detergent levels need adjustment.
  • Do not overuse detergent — too much creates excessive residue and actually reduces cleaning efficiency.

Oil Skimming: Extend Your Solution Life

Proper oil skimming is one of the simplest things you can do to keep your SJ-15 performing well:

  • Run the oil skimmer one to two times per week to remove floating oils from the surface.
  • Never operate the skimmer during a wash cycle. Turn the heater off and allow the water to cool first.
  • Collected waste oil should be disposed of in your designated CUDA waste drum.
  • Regular skimming extends solution life and improves cleaning results — it’s the single best maintenance habit you can build.

Routine Maintenance Tips

  • Keep spray bars and debris screens clean to maintain spray pressure and coverage.
  • Routine inspection prevents unplanned downtime — catching a clogged nozzle early takes minutes, not hours.
  • If you ever have questions or concerns, contact Calumet Chicago Company. We are here to support you.

Full-Service Support from Calumet Chicago

At Calumet Chicago Company, we don’t just deliver a parts washer and walk away. Our customers receive:

  • On-site operator training at installation
  • Preventative maintenance on a structured bimonthly schedule
  • Detergent supply, water testing, and waste removal
  • Replacement parts and labor included in our leasing program
  • Customer service response within 24 hours

We currently service over 90 parts washers throughout Northwest Indiana and the greater Chicago industrial corridor — including CUDA, JRI, and GenFab systems.

Questions? Need Service?

Whether you need training for a new crew, a maintenance visit, or you’re considering adding a CUDA SJ-15 to your shop, we’re here to help.

Call Calumet Chicago Company: 800-732-5538

Calumet Chicago Company — Turn-Key Parts Washing Solutions since 1963.