Michael T
Member
I just acquired a RK40-c skid. I bought out another contractor. It has a clutch on the pump and a pressure trap unloader.
I really dont like pressure trap unloaders for several reasons. So I wanted to convert to a K-7 unloader. I contacted the manufacture technical department with the question. " Can I change out the unloader and still keep the clutch? And will it all operate the same?" The short answer was No. But no one had actually tried it yet.
Being left handed, right brained, reverse engineering, Macgyver type guy I am. The wheels started turning. This type system requires 2 pressure switches, one for the fuel and one for the clutch. Without to much technical discussion. The fuel/burner needs to be on during flow and off in bypass. And the Clutch need to be off in bypass and on during flow. It took me about 2 hrs to reconfigure, because it is inside a van and I have big hands working in a tight space.
Conclusion: Success, It works flawlessly, just as designed, but with a K-7 unloader instead of a Pressure trap unloader.
Now we have much more control of the wand working in tight quarters ( like in KEC applications ). The only draw back is the burner flow switch needs 750psi to activate. Sometimes we need an open gun to rinse with hot water. This is not really much of an inconvenience. I really love these type of challenges.
I really dont like pressure trap unloaders for several reasons. So I wanted to convert to a K-7 unloader. I contacted the manufacture technical department with the question. " Can I change out the unloader and still keep the clutch? And will it all operate the same?" The short answer was No. But no one had actually tried it yet.
Being left handed, right brained, reverse engineering, Macgyver type guy I am. The wheels started turning. This type system requires 2 pressure switches, one for the fuel and one for the clutch. Without to much technical discussion. The fuel/burner needs to be on during flow and off in bypass. And the Clutch need to be off in bypass and on during flow. It took me about 2 hrs to reconfigure, because it is inside a van and I have big hands working in a tight space.
Conclusion: Success, It works flawlessly, just as designed, but with a K-7 unloader instead of a Pressure trap unloader.
Now we have much more control of the wand working in tight quarters ( like in KEC applications ). The only draw back is the burner flow switch needs 750psi to activate. Sometimes we need an open gun to rinse with hot water. This is not really much of an inconvenience. I really love these type of challenges.
