Quality Control

Test Stand Operation:

 

The operator inputs the valve configuration including electrical voltage, injector, and programming. The test machine verifies the valve function, operation and programming against the parameters input by the operator. If the valve passes, the part number and serial number are etched on the valve at the end of the test sequence. The etched numbers are evedince that the valve passed the test protocols.

 

Tests are as follows:

• Gross Leak Test - pressure - determines integrity of valve body

• Casting    Leak Test - pressure - will detect leaks in Injector Plug, Drain Cap or Drain Cap O-ring, End Cap or End Cap O-ring, and Valve Body

• Seal Leak Test - pressure - will detect leaks in Drain, Piston (Missing O-ring on drain end), and Valve Body

• Service    Test - flow - will establish service flow path and flow rate detect problems with Piston Position, Piston Seals, and Valve Body.

• Backwash Test - flow - will establish backwash flow path and flow rate and detect problems with Piston Position, Drive Motor Operation, Piston (Seal Issue), and Valve Body

• Brine Drain & Vacuum - flow - will establish brine draw flow path and flow rate and detect problems with Injector (Broken or missing O-ring/s), Drive Motor Operation, Piston (Seal Issue), and Valve Body

• Fast Rinse - flow - will establish fast rinse flow path and flow rate and detect problems Drive Motor Operation, Piston (Seal Issue), and Valve Body

• Electrical Test - Hi-pot

• Electrical Test - Ground Bonding

Note that valves are tested with the plugs installed at the electrical voltage they will receive in the field. For example, 220V valves are tested at 220V with power supplied by the installed plug.

 

Tests are done with air