Cat 623 Loses All Pressure On High Pressure Soap... HELP!

[Officer]

Fellow Operators,

I have a SS Cat 623 pump that loses pressure when I switch to HP Soap. Feeds are free and clear and the pump works well for rinse, HP Wax and all low pressure functions work well. I've switched the wax and soap solenoids and the problem remains on the HP soap option. I put on a new tip, reset the breaker (just in case) and the problem remains. Any help would be greatly appreciated.

Thanks,
Brandon

 

[lbcarwashmo]

Hey Brandon - I've had a similar issue on high pressure soap where there was a leak in the soap line between the soap tank and the connection to the solenoid/pump in the 1/4 poly line and it was allowing air into the poly line and not creating pressure in the HP pump.

 

[MEP001]

Since it happens only on soap, it's almost certainly a crack in the hose or a fitting before the soap solenoid letting it draw air.

 

[copperglobe]

Yep. Leak in the soap line.

 

[Officer]

I was beginning to think the same thing. But, when I moved the solenoid to the wax valve, the problem continued. When I put the wax solenoid on the soap valve, the problem didn't follow the wax function.