Below is a step by step guide for installing the WATER PRESSURE KIT on the BioPro 190.
Unscrew 4 screws on the front of the black casing atop your BioPro 190.
Lift lid and prop open, either against an adjacent wall or with a dowel, then locate water-valve-to-be-replaced inside machine (in back).
Remove four connections (see arrows): 2 for water, two for electrics. Once detached, pull up and remove existing water valve. Note: when removing water connections, depress ends of metal connections, where tubing runs in, to release grip.
Locate your replacement solenoid valve.
Install by reconnecting same four connections removed earlier (see arrows). Note: when seating the new solenoid valve you will have to push the bottom of the water intake pump (at left) to the left to make more room. This is a perfectly acceptable procedure and will not inhibit the performance of your BioPro. Close black lid and screw 4 screws back in place.
Insert water-in line to back of machine.
Locate water pressure fitting.
Attach hose to one end of fitting, and water-in line to other end of fitting.
Rotate black cylindrical nob on top of fitting to adjust water pressure from hose to 2-3 psi. This is the recommended water pressure for optimal washing conditions.